SIM card, also known as subscriber identity module or SIM card, is a card that integrates large-scale circuits and is used to store important data and information of users. Its core consists of five modules: microprocessor CPU, program memory ROM, working memory RAM, data memory E2PROM, and serial communication device. In order to achieve internal pre programming, in addition to the five necessary connections corresponding to these five modules, an additional programming voltage interface is required. Therefore, the SIM card connector has at least six pins, which are:
VCC (power pin)
RST (card reset pin)
CLK (Clock Foot)
GND (ground/detection foot)
VPP (Voltage Pin)
I/O (data pin)
TXGA SIM card connectors are available in pin types 6, 7, 8, and 9. With the increasing trend towards intelligence and miniaturization of electronic devices, TXGA SIM card connectors are becoming more widely used in various smart small devices and have become an ideal choice for these devices.
