Quectel SC66 Hardware Design page 22

EVRC, EVRC-B, EVRC-WB; G.711, G.729A/AB; GSM-FR, GSM-EFR,
Audio Codec
GSM-HR; AMR-NB, AMR-WB, AMR-eAMR, AMR-BeAMR
Compliant with USB 3.1 and 2.0 specifications, with transmission rates up to
5Gbps on USB 3.1 and 480Mbps on USB 2.0
USB Interfaces Support USB OTG
Used for AT command communication, data transmission, software
debugging and firmware upgrade
4 UART Interfaces: UART6, UART1, DEBUG UART and LPI_UART_2

UART6: 4-wire UART interface with RTS/CTS hardware flow control,
max rate up to 4Mbps
UART Interfaces

UART1: 2-wire UART interface

DEBUG UART: 2-wire UART interface used for debugging

LPI_UART_2: 2-wire low power UART interface
Support SD 3.0
SD Card Interface
Support SD card hot-plug
2 (U)SIM interfaces
(U)SIM Interfaces Support USIM/SIM card: 1.8V/2.95V
Support Dual SIM Dual Standby (supported by default)
Support up to 5 I2C interfaces, used for peripherals such as TP, camera,
I2C Interfaces
sensor, etc.
I2S Interfaces 2 I2S interfaces
ADC Interfaces 2 general-purpose ADC interfaces
SPI Interface 1 SPI interface, only support master mode
Real Time Clock Supported
Main antenna, Rx-diversity antenna, GNSS antenna, Wi-Fi/BT antenna, FM*
Antenna Interfaces
antenna and WIFI_MIMO antenna interfaces
Size: (43.0±0.15)mm × (44.0±0.15)mm × (2.85±0.2)mm
Physical Characteristics Package: LCC＋LGA
Weight: approx. 12.0g
Operating temperature range: -35°C ~ +65°C
Temperature Range Extended temperature range: -40°C ~ +75°C
Storage temperature range: -40°C ~ +90°C
Firmware Upgrade A/B OTA firmware upgrade via USB
RoHS All hardware components are fully compliant with EU RoHS directive
SC66_Hardware_Design
Smart LTE Module Series
SC66 Hardware Design
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