Functional Diagram - Quectel SC20 Series Hardware Design

Motor Drive Interface
SD Card Interface
I2C Interfaces
ADC Interfaces
Real Time Clock
Antenna Interfaces
Physical Characteristics
Temperature Range
Firmware Upgrade
RoHS

2.3. Functional Diagram

The following figure shows a block diagram of SC20 series and illustrates the major functional parts.
Power management

Radio frequency

Baseband

LPDDR3 + eMMC flash (SC20-CE R1.1/-CEL R1.1, SC20-E/-EL, SC20-A/-AL, SC20-AU/-AUL,

SC20-J/-JL, SC20-EU)
LPDDR2 + NAND flash (SC20-AX, SC20-EX)

Peripheral interfaces

-- USB interface
-- UART interfaces
-- (U)SIM interfaces
-- SD card interface
-- GPIO interfaces
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Within the operating temperature range, the module is 3GPP compliant.
SC20_Series_Hardware_Design
baud rate up to 4 Mbps
UART2: 2-wire UART interface used for debugging

Drives ERM motor
Supports SD 3.0, 4-bit SDIO
Supports SD card hot-plug
Three I2C interfaces
Used for peripherals such as camera, sensor, touch panel, etc.
Three ADC interfaces
Used for battery voltage detection, battery temperature detection and
general-purpose ADC
Supported
Main antenna, Rx-diversity antenna, GNSS antenna and Wi-Fi/Bluetooth
antenna
Size: (40.5 ±0.15) mm × (40.5 ±0.15) mm × (2.8 ±0.2) mm
Package: LCC + LGA
Weight: approx. 9.8 g
Operating temperature range: -35 to +75 °C
Storage temperature range: -40 to +90 °C
Over USB interface
All hardware components are fully compliant with EU RoHS directive
Smart Module Series
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