stm32 discovery pack for 2g/3g cellular to cloud · user manual stm32 discovery pack for 2g/3g...

March 2018 UM2322 Rev 2 1/22

1

UM2322User manual

STM32 Discovery pack for 2G/3G cellular to cloud

Introduction

The STM32 Discovery pack (P-L496G-CELL01) is a turnkey development platform for cellular and cloud technology based solutions. The pack contains an STM32L496AGI6-based low-power Discovery mother board and an STMod+ Cellular 2G/3G worldwide expansion board with antenna.

Figure 1. P-L496G-CELL01 (Top view)

1. Picture is not contractual.

www.st.com

http://www.st.com

Contents UM2322

2/22 UM2322 Rev 2

Contents

1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Development toolchains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 Demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

6 Technology partners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

7 Hardware layout and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7.1 Board layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7.2 Cellular STMod+ expansion board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

7.2.1 Modem power supply and reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

7.2.2 SIM selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

7.2.3 Modem firmware update. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

7.3 Embedded ST_LINK/V2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

7.3.1 Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7.4 Mother board power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

7.4.1 Power supply sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7.5 Mother board reset sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.6 Mother board boot options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Appendix A Expansion board schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Appendix B Federal Communications Commission (FCC) and Industry Canada (IC) Compliance . . . . . . . . . . . . . . . . . . . . . . . 20

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

UM2322 Rev 2 3/22

UM2322 List of tables

3

List of tables

Table 1. Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Table 2. STMod+ connector pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Table 3. Boot settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Table 4. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

List of figures UM2322

4/22 UM2322 Rev 2

List of figures

Figure 1. P-L496G-CELL01 (Top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Figure 2. Mother board and expansion 2G/3G modem top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Figure 3. Mother board and expansion 2G/3G modem bottom view . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 4. USB Composite Device driver installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Figure 5. Expansion board top level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Figure 6. Expansion board modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Figure 7. Expansion board SIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Figure 8. Expansion board STMod+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Figure 9. Expansion board power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

UM2322 Rev 2 5/22

UM2322 Features

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1 Features

• STM32L496AGI6 Arm®-based microcontroller featuring 1 Mbyte of Flash memory and 320 Kbytes of RAM in a UFBGA169 package

• USB OTG HS

• On-board current measurement

• SAI Audio CODEC

• ST-MEMS digital microphones

• 8-Mbit PSRAM

• 2 user LEDs

• 1 user and 1 reset push-buttons

• 4-direction joystick with selection button

• Board connectors:

– Camera 8 bit

– USB with Micro-AB

– Stereo headset jack including analog microphone input

– microSD™ card

• Board expansion connectors:

– Arduino™ Uno V3

– STMod+

• Board expansion features:

– Quectel UG96 worldwide cellular modem penta-band 2G/3G module, 7.2 Mbps downlink, 5.76 Mbps uplink.

– Modem reset red LED and modem signaling green LED

– Switchable SIM interface, eSIM and micro SIM

– Pulse 2G/3G SMA antenna for frequency ranges: 824 / 900 / 1800 / 1900 / 2100 MHz

• Flexible power-supply options: ST-LINK, USB VBUS, or external sources

• On-board ST-LINK/V2-1 SWD,TAG debugger/programmer with USB re-enumeration capability: mass storage, virtual COM port and debug port

• Comprehensive free software libraries and examples available with the STM32Cube package

• Support of a wide choice of integrated development environments (IDEs) including IAR™, Keil®, GCC-based IDEs

System requirements UM2322

6/22 UM2322 Rev 2

2 System requirements

• Windows® OS (7, 8 and 10), Linux® 64-bit or macOS®

• USB Type-A to Micro-B cable

3 Development toolchains

• Keil® MDK-ARM(a)

• IAR™ EWARM(a)

• GCC-based IDEs including free SW4STM32 from AC6

4 Demonstration software

The demonstration software, included in the STM32Cube MCU Package, is preloaded in the STM32 Flash memory for easy demonstration of the device peripherals in standalone mode. The latest versions of the demonstration source code and associated documentation can be downloaded from the www.st.com web page.

5 Ordering information

To order the P-L496G-CELL01 Discovery pack refer to Table 1.

a. On Windows® only

Table 1. Ordering information

Order code Target STM32

P-L496G-CELL01 STM32L496AGI6

UM2322 Rev 2 7/22

UM2322 Technology partners

21

6 Technology partners

EMNIFY:

• IoT connectivity platform eSIM

QUECTEL:

• Worldwide LTE IoT EGPRS module

EXOSITE:

• Cloud data management

GROVESTREAMS:

• IoT platform

Hardware layout and configuration UM2322

8/22 UM2322 Rev 2

7 Hardware layout and configuration

Figure 2 illustrates the connection between the STM32L496AGI6-based Discovery mother board and the modem expansion board. The connection is done through the STMod+ connector.

7.1 Board layouts

There is no LCD with the STM32L496AGI6-based Discovery mother board in this pack. For mother board detailed description, refer to Discovery kit with STM32L496AG user manual (UM2160).

Figure 2. Mother board and expansion 2G/3G modem top view

UM2322 Rev 2 9/22

UM2322 Hardware layout and configuration

21

Figure 3. Mother board and expansion 2G/3G modem bottom view

7.2 Cellular STMod+ expansion board

The expansion board is a GSM/UMTS/HSDPA modem based on Quectel UG96 module. The UG96 is a GSM 4-Band 800/850/900/1900/2100, UMST 5-Band 800/850/900/1900/2100 supporting HSDPA. The connection with the STM32L496AGI6-based Discovery mother board is done through the STMod+ connector.

Table 2. STMod+ connector pin description

STMod+ IOX=pin x Pin name Pin function

pin 1 CTSS Modem UART CTS

pin 2 RXDS Modem UART RXD

pin 3 TXDS Modem UART TXD

pin 4 RTSS Modem UART RTS

pin 5 GND Ground

pin 6 VCC +5V

pin 7 STMod+ IO7 I2C clock for EEPROM

pin 8 Sim_select1 Sim selection IO1 always set to 1

pin 9 PWRen Modem power enable


10/22 UM2322 Rev 2

7.2.1 Modem power supply and reset

The cellular board is supplied through the 5V on the STMod+ connector (Pins 6 and 15). The modem is enabled by the power enable (Pin 9). When this pin is driven, a few seconds later, the red led is on to indicate that the modem is ready, and the green led starts flashing to indicate that the modem is scanning for cell synchronization. At this time AT command can be sent using UART.

If the power supply is not enough in signaling mode, additional power supply can be provided by the USB connector.

7.2.2 SIM selection

Switchable SIM interface is provided on the cellular modem board. The user selects either the embedded SIM or the plastic SIM.

Set pin Sim_select0 to low to select the plastic SIM, or to high to select the embedded SIM.

7.2.3 Modem firmware update.

The modem firmware can be updated using the micro USB connector provided on the modem:

1. First install the USB drivers of the modem from Quectel.

2. Install Qflash from Quectel and load the firmware.

3. Press start and reset the modem to download the firmware.

pin 10 I2C I2C data for EEPROM

pin 11 RIS Modem ring indicator RI

pin 12 RST Modem reset

pin 13 sim_CLK SIM clock

pin 14 DTRS Modem wake up

pin 15 VCC +5V

pin 16 GND Ground

pin 17 Sim_RST Sim reset

pin 18 Sim_select0Sim selection IO0, 0 for plastic SIM and 1 for

embedded SIM

pin 19 Sim_DATA Sim data

pin 20 STAS Modem status

Table 2. STMod+ connector pin description (continued)

STMod+ IOX=pin x Pin name Pin function

UM2322 Rev 2 11/22


21

7.3 Embedded ST_LINK/V2-1

The ST-LINK/V2-1 programming and debugging tool is integrated on the STM32L496AGI6-based Discovery mother board. Compared to ST-LINK/V2 the changes are listed in Section 7.3.1.

7.3.1 Drivers

The ST-LINK/V2-1 requires a dedicated USB driver, available on www.st.com for Windows 7 and 8. On Windows XP the ST-LINK/V2-1 driver requires WinUSB to be installed before using the ST-LINK/V2-1 (either available from Microsoft website or included in the USB driver for ST-LINK/V2 for XP).

When the STM32L496AGI6-based Discovery mother board is connected to the PC before the driver is installed, some STM32L496AGI6-based Discovery mother board interfaces may be declared as ‘Unknown’ in the PC device manager. In this case the user must install the driver files, and update the driver of the connected device from the device manager.

Note: Prefer using the ‘USB Composite Device’ handle for a full recovery.

Figure 4. USB Composite Device driver installation.

7.4 Mother board power supply

7.4.1 Power supply sources

The STM32L496AGI6-based Discovery mother board is designed to be powered by the following sources:

• STLK from the ST-LINK/V2-1 USB connector CN5 with 500 mA current limitation

• Power mechanism of supplying the board by STLINK/V2-1

• Programing/debugging when the power supply is not from ST-LINK/V2-1

It is mandatory to power the board first using user USB FS connector CN8 or the VIN pin of Arduino connector CN15 before connecting the USB cable from ST-LINK/V2-1 CN5 to the PC. Proceeding this way ensures that the enumeration succeeds thanks to the external power source.


12/22 UM2322 Rev 2

The following power sequence procedure must be respected:

1. Put a jumper in JP3 at location U5V to use power from user USB CN8 or at location E5V to use power from VIN of Arduino connector CN15.

2. Connect the corresponding external power source.

3. Check the green LED LD8 is turned ON.

4. Connect the PC to ST-LINK/V2-1 USB connector CN5.

If this order is not respected, the board may be powered by VBUS first from ST-LINK, and the following risks may be encountered:

1. If more than 500 mA current is needed by the board, the PC may be damaged or current may be limited by PC. As a consequence the board is not powered correctly.

2. 500 mA is requested at the enumeration, so there is a risk that the request is rejected and enumeration does not succeed if PC does not provide such current.

7.5 Mother board reset sources

The reset signal of the STM32L496AGI6-based Discovery mother board is low active and the reset sources include:

• Reset button B1

• Embedded ST-LINK/V2-1, SW1 set to ON (default setting)

• Arduino compatible TM connector CN15 pin 3

7.6 Mother board boot options

After reset, the microcontroller STM32L496AGI6 may boot from the 3 following embedded memory locations depending on bits BOOT0 and BOOT1:

• Boot from the user FLASH memory

• Boot from the ICP (In Circuit Programming)

• Boot from the SRAM

The selection of the memory space for the boot is done by two bits, BOOT0 and BOOT1. The value of BOOT1 is defined by a user option bit (bit[23], nBOOT1). Specifically, when this bit is written with '1', the empty flag status toggles and keeps this new status until the next OBL or until a new '1' is written.

Table 3. Boot settings

nBOOT1 (OPTR[23])

nBOOT0 (OPTR[27])

BOOT0 pin (PH3)

BOOT0 SW configuration

OPTR[26])

Main Flash empty

Boot memory space alias

X X 0 1 0User FLASH memory is aliased

at address 0x0000_0000

X X 0 1 1Test FLASH memory is aliased


1 X 1 1 XTest FLASH memory is aliased


UM2322 Rev 2 13/22


21

0 X 1 1 XEmbedded SRAM is aliased at

address 0x0000_0000

1 1 X 0 XUser FLASH memory is aliased


1 0 X 0 XTest FLASH memory is aliased


0 0 X 0 XEmbedded SRAM is aliased at

address 0x0000_0000

Table 3. Boot settings (continued)

nBOOT1 (OPTR[23])

nBOOT0 (OPTR[27])

BOOT0 pin (PH3)

BOOT0 SW configuration

OPTR[26])

Main Flash empty

Boot memory space alias

Expansion board schematics UM2322

14/22 UM2322 Rev 2

Appendix A Expansion board schematics

This section provides design schematics for the cellular expansion board:

• Figure 5: Expansion board top level

• Figure 6: Expansion board modem

• Figure 7: Expansion board SIM

• Figure 8: Expansion board STMod+

• Figure 9: Expansion board power

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Figure 5. Expansion board top level

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MB1329_TOPTitle:

Size:Reference:Sheet: ofA4

Revision:

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[No Variations]

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RI

RXD

DTR

CTSTXDRTS

RST

PWRen

sim_GND

sim_CLK

sim_DATAsim_RST

STA

U_modemmodem.SchDoc

sim_GND

sim_CLK

sim_DATAsim_RST

Sim_select0Sim_select1

U_SIMSIM.SchDoc

sim_CLK

sim_DATA

RI

RTS

RXD

DTR

CTSTXD

STA

sim_RST


PWRen

RST

U_stmodstmod.SchDoc

U_PowerPower.SchDoc

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Figure 6. Expansion board modem

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UG96_ModemTitle:


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GND

pwr

sim_GNDsim_CLKsim_Datasim_RST

VDD_EXT

STA

RI

RXDTXDCTSRTS

DTR

GND

RI

RXDDTR

CTSTXD

GND

RST

VDD_SIM

VBAT

VBAT

GND

0R

R1

5.1pFC2

5.1pFC5

GND GND

GND GND

NETLIGHT

NETLIGHT

2K2R14

2K2R13

VBAT VBAT

RI

RXDDTR

CTSTXD

VDD_EXT

3

1

2DTC043ZEBTL Q4

Res

erve

d1

Res

erve

d2

GN

D3

PCM_CLK_MIC2P4 PCM_SYNC_MIC2N5 PCM_DIN_MIC1P6 PCM_DOUT_MIC1N7

USB_VBUS 8

USB_DP 9

USB_DM 10

Reserved-SPK1N11

Reserved-SPK1P12 Reserved-LOUDSPKN13 Reserved-LOUDSPKP14

PWRKEY 15

PWRDWN_N 16

RESET_N17

Res

erve

d18

AP_READY 19

STATUS 20

NETLIGHT 21

reserved_DBG_RXD22 reserved_DBG_TXD23

Res

erve

d24

CLK_OUT 25

Reserved_SIM2_DATA26 Reserved_SIM2_CLK27 Reserved_SIM2_VDD28

VDD_EXT 29

DTR30

GN

D31

VBAT_BB 32

VBAT_BB 33

UART-RXD34 UART-TXD35 UART-RCS36 UART_RTS37

DCD38 RI39 I2C_SCL40 I2C_SDA41

USIM_PRESENCE 42USIM_VDD 43USIM_RST 44USIM_DATA 45USIM_CLK 46USIM_GND 47

GN

D48

Res

erve

d49

GN

D50

VRTC 51

VBAT_RF 52VBAT_RF 53

GN

D54

GN

D55

Res

erve

d56

Res

erve

d57

GN

D58

GN

D59

RF_ANT60

GN

D61

GN

D62

Res

erve

d63

Res

erve

d64

Res

erve

d65

Res

erve

d66

GN

D67

GN

D68

GN

D69

GN

D70

GN

D71

GN

D72

GN

D73

GN

D74

Res

erve

d75

Res

erve

d76

Res

erve

d77

Res

erve

d78

GN

D79

GN

D80

GN

D81

GN

D82

Res

erve

d83

Res

erve

d84

Res

erve

d85

Res

erve

d86

Res

erve

d87

Res

erve

d88

GN

D89

GN

D90

GN

D91

Res

erve

d92

Res

erve

d93

Res

erve

d94

Res

erve

d95

Res

erve

d96

Res

erve

d97

Res

erve

d98

Res

erve

d99

GN

D10

0

GN

D10

1

GN

D10

2

UG96U3

3

1

2

DTC043ZEBTLQ3

3

1

2

DTC043ZEBTLQ2 3

1

2

DTC043ZEBTLQ1

RTSRTS

LG Q396-PS-35LD2 LS Q976-NR-1

LD1

RSTPWRenRST

sim_GNDsim_CLKsim_Datasim_RST

sim_GNDsim_CLK

sim_DATAsim_RST

STASTA

STA

PWRen

PWRen

RF 1

GND2

GND3

GND4 GND5

SMA-J-P-H-ST-EM1

CN1

USB_VBUS

USB_D_PUSB_D_N

VBUS1

DM2

DP3

ID4

GND5

SH1SH1

SH2SH2

EXP1EXP1

EXP2EXP2 USB

_Mic

ro-A

Bre

cept

acle

10104111-0001LF

CN2

100nFC1

GND

USB_VBUS

GND

USB_D_PUSB_D_N

IN5

OU

T1

GN

D2

EN4

FAU

LT3

STM

PS21

71U

1

GND

VCC

100nFC32

GND

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Figure 7. Expansion board SIM

4 6

SIMTitle:


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VDD_SIM

VDD_SIM1

GND

GNDGNDGND

GND GND GND

GND

sim_GND

sim_CLK

sim_DATAsim_RST

sim_GND

GND


VDD_SIM1

VDD_SIM2

sim_GND

18ohmR4

18ohmR5

18ohmR2

S1

1B1 2

1B2 31A4

2B1 5

2B2 62A7

GN

D8

3A9

3B2 103B1 114A12

4B2 134B1 14

OE15

VC

C16 SN74CB3Q3257PW

U6

15KR7

33pFC9

33pFC17

33pFC16

15KR3

33pFC8

33pFC6

33pFC7

GND1

NC2

DATA3

NC4 NC 5CLK 6RST 7VSIM 8

ES4620

U2

1

23456

ESDA6V8AV6U4

1

23456

ESDA6V8AV6U5

100nFC10

100nFC3

VDD_SIM2

VDD_SIM1

VDD_SIM2

sim_GND

sim_GND

3V3

15KR8

3V3

GND

VDDC1

RSTC2

CLKC3

GNDC5

NCC6

DATAC7

GN

D1

GN

D2

GN

D3

GN

D4

GN

D5

GN

D6

X1

7

X2

8

786463001CN4socket_microsim_786463001

18ohmR6

18ohmR1618ohmR15

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Figure 8. Expansion board STMod+

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STMOD+Title:


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VCC

STmod+

sim_CLK

sim_DATA

GNDGND10K

R12120KR11

GND

GND

VDD_EXT

100nF

C12

100nF

C11GND GND

VDD_EXT

RTSRXD

CTSTXD

RI

RTSRXD

DTR

CTSTXD

STA

TXDS

RXDS

CTSS

RTSS

VDD_EXT

E01

E12

E23

VSS4 SDA 5SCL 6WC 7VCC 8

M24128DWMN

U10

A11 VC

CA

2

A23

A34

A45

A56

A67

A78

A89

OE10

GN

D11

B8 12B7 13B6 14B5 15B4 16B3 17B2 18B1 20VC

CB

19

TXS0108EPWRU7

1

3

5

7

9

11

13

15

17

19

2

4

6

8

10

12

14

16

18

20

TMM-110-01-L-D-RA

CN3

51KR9 51KR10

GND

GND

STMOD+_IO7STMOD+_IO10

RIS

sim_RST

DTRS

3V3

3V33V3

3V3 3V3

VCC

Sim_select0Sim_select1 STMOD+_IO8

STMOD+_IO12STMOD+_IO13

STMOD+_IO17STMOD+_IO18STMOD+_IO19STMOD+_IO20

STMOD+_IO14

STMOD+_IO9

STMOD+_IO4

RIS

DTRS

STA

RTSS

RXDS

STAS

CTSS

TXDS

DTRRI

PWRen

RST

STMOD+_IO7

STMOD+_IO10

10KR20

10KR21

STAS

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Figure 9. Expansion board power

6 6

PowerTitle:


Revision:

Project: C2C

MB1329B 0201-JAN-16

[No Variations]

Date:-

Variant:

47KR18

100KR17

470RR19

10pFC31

GNDGND

VCC VBAT

10pFC4

GND

GND

GND

VBATVBAT

VBAT

33pFC27

33pFC15

33pFC29

470uFC18

470uFC26

10pFC28

100nFC14

100nFC30

100nFC23

51

2

GND3

4

BYPASSINH

Vin Vout

LD3985M33RU9

10uFC20

100nFC22

10nFC19

2.2uFC21

100nFC24

GND GND GNDGNDGND GND

VCC 3V3

IN2

EN1 ADJ 5

OUT 4

GN

D3

EPA

6

MIC29302WUU8

GND

12

D1MMSZ5V1T1G

12

D2MMSZ5V1T1G

100uFC25

100uFC13

GND

Federal Communications Commission (FCC) and Industry Canada (IC) Compliance UM2322

20/22 UM2322 Rev 2

Appendix B Federal Communications Commission (FCC) and Industry Canada (IC) Compliance

This kit is designed to allow:

1. Product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and

2. Software developers to write software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of 47 CFR, Chapter I (“FCC Rules”), the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter.

UM2322 Rev 2 21/22

UM2322 Revision history

21

Revision history

Table 4. Document revision history

Date Revision Changes

14-Feb-2018 1 Initial version

1-Mar-2018 2

Added:

-System requirements and Development toolchains

-Expansion board top level Figure 5

Updated:

-Expansion board parts Figure 6 to Figure 9

-FCC and IC Compliance Appendix B

UM2322

22/22 UM2322 Rev 2

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