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SIM卡
GT4302
The GT4302 is a dual SIM card control chip optimized for GSM/EDGE/GPRS/LTE handsets, It provides the power conversion and signal level translation needed for advanced cell phones to interface with 1.8V and 3V SIMs. The device meets all requirements for 1.8V and 3V SIMs and contains LDO regulators to power 1.8V or 3V SIM card from a 2.7V to 5.5V input. A serial port interface(SPI) is used to control dual SIM channel individually. The GT4302 I/O voltage can support 1.65V to 5.5V. The GT4302 is available in 20-pin 3mm x 3mm QFN package. The operating temperature range is from -40°C to +85°C
特性
- Control and communication through a SPI interface with baseband processor.
- CMOS Technology for dual SIM card controlling
- Power management and control for two SIM cards
- Independent 1.8/3V VCC control for each SIM card
- Fast channel switching
- Independent clock stop mode (at high or low level) for each SIM card
- Temperature Range: –40°C to 85°C
- 20-pin 3mm x 3mm QFN package (Pb-free & Green available):
应用
- GSM
- EDGE
- GPRS
- LTE Cell Phones
