wwu taylor reijm. lpc2378 32-bit mcu 512kb flash memory 144-pin 20mhz oscillator used to control tft...
DESCRIPTION
LPC bit MCU 512kB Flash Memory 144-pin 20MHz oscillator Used to control TFT touch screen LCD and LCD controller. 1 GPIO used for automatic power off circuitry RXD3 and TXD3 used to interface with GPS Receiver.TRANSCRIPT
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GPS LOCATION SAVING SYSTEM HARDWARE
REVIEWWWU
Taylor Reijm
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GPS Location Saving System Full Schematic
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NXP LPC2378 ARM7 MCU
LPC2378•32-bit MCU•512kB Flash Memory•144-pin•20MHz oscillator•Used to control TFT touch screen LCD and LCD controller.•1 GPIO used for automatic power off circuitry•RXD3 and TXD3 used to interface with GPS Receiver.
![Page 4: WWU Taylor Reijm. LPC2378 32-bit MCU 512kB Flash Memory 144-pin 20MHz oscillator Used to control TFT touch screen LCD and LCD controller. 1 GPIO used](https://reader035.vdocuments.mx/reader035/viewer/2022062219/5a4d1b8d7f8b9ab0599bfcc9/html5/thumbnails/4.jpg)
Power Supply Circuitry
•7.2V NiMH battery with 3000mA hrs.•IRFZ44N VGS=2V to start conduction.•VGS=0V to end conduction.•GPIO and SW2 used to control conduction•ATPS006A0X Pico TLynx DC-DC switching power module.
• Fixed Switching Frequency• Remote On/Off• 4.5Vdc-14Vdc• 6A
•Trim resistance used to get output of 5V• RTRIM=[5.91/(Vo -0.591)]k ohms• RTRIM(5V)=1.34k ohms
NCP1117•18V max in•3.3V out•800mA output current
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TFT LCD and Controller
ADS7843- Touch screen controller•12 bit ADC with synchronous serial interface•Comes connected as shown from Gravitech
ELT240320TP-TFT LCD•Thin Film Transistor Touch screen interface•2.8” screen 240x320 pixels.•Backlight control•Cap Sense O/P
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Reset Circuitry
•Active low reset
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Oscillator and EEPROMOscillator•20MHz oscillator with enable tied to 3.3V supply
EEPROM•8kB•I2C interface w/LPC2378
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GPS Receiver
EM-406A• 4800 baud NMEA 0183 output• 4.5V~6.5V DC input supply• ~44mA • O/P voltage level 0V to 2.85V• One Pulse Per Second not used.
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