Technical Manual

CLASSIFICATION: PUBLIC DATE OF PRINT: 20 January 2021
Block Diagram
Vehicle Battery
9 – 32VDC Input
Protection
Circuit
DC DC Switcher
4.5V, 2.5A
Battery Charging
Circuit
Li-Ion Battery
3.7V, 1350mAh
Circuit Switch
Over
Internal battery in
absence of
external power
LDO 1
3.3V, 500mA
LDO CAN
3.3V, 300mA
LDO GNSS
3.3V, 300mA
3A PMOS Switch
PMOS Switch
PMOS Switch
BLE/Wi-Fi
MCU/Flash/Peripherals
SDRAM
CAN Transceiver
GNSS Module
EG25-G Module
32 Bit ARM Cortex M4
Microcontroller
Internal Clock
External Clock – 24MHz / 32.768MHz
EXT Supply
AN I/P
Conn
Tamper I/P
Iso Ign
I/P
4 x DI/AI
Low Side
DO
Engine Run
I/P
Batt Temp
AN I/P
5 Supply
Control
O/P
EXT Supply
Status I/P
Flash
64MB
SDRAM
8MB
EG25-G
CAT4 / GNSS Module
LTE1 1920 – 2170MHz
LTE3 1710 – 1880MHz
LTE7 2500 – 2690MHz
LTE8 880 – 960MHz
LTE20 791 – 832MHz
LTE38 2570 – 2620MHz
WDCMA 2100 1920 – 2170MHz
WCDMA 900 880 – 960MHz
EGSM 880 – 960MHz
DCS1800 1710 – 1880MHz
nRF52833
BLE Module
Internal Clock 64MHz / 32kHz
External Clock 32MHz
BLE - 2400 – 2483.5MHz
Accelerometer /
Gyroscope
ESP32-WROOM-32D
Wi-Fi Module
Internal Clock 40MHz
Wi-Fi - 2412-2484MHz
Bluetooth – 2402-2480MHz
TTL
UART
CAN1 CAN2 RS232
UART
UART UART
UART
TTL
I2C
UART
UART
UART
PMP
SPI/QSPI
GSM Antenna
GNSS Antenna