SHANGHAI SIMCOM LIMITED
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Figure4-6 SD interface application diagram
4.9 Sensors interface
SIMT1502 support many sensors via I2C bus, the circuit structure is similar to camera interface.
SIMT1502 does not contain necessary pull_up resistors internal, which must be designed in
external circuit.
4.10 Side keys interface
SIMT1502 contains a few keys interfaces, which can be used as functional side keys.
KYPD_SNS0,KYPD_SNS1and KYPD_SNS2 can compose matrix keyboard, also can be used as
normal configurable GPIO.
See
Table4-9
for more details.
Table4-9 Side keys interface description
Signal
Pin#
Description
Direction
DI
/
DO
KYPD_SNS0
40
Keypad sense bit 0
DI
KYPD_SNS1
41
Keypad sense bit 1
DI
KYPD_SNS2
42
Keypad sense bit 2
DI
PM_KYPD_PWR_N
76
Power on key
DI
PM_RESIN_N
82
PMIC reset input
DI
4.11 Battery connector interface
Summary of Contents for SIMT 1502
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