Multi-Tech Systems 92U04A22750 ユーザーズマニュアル

Chapter 3 – Electrical Characteristics

Wireless ModemModule MTMMC-C Developer's Guide

    9

31

COL3

I/O

1X

Keypad column

32

COL4

I/O

1X

Keypad column

33

COL1

I/O

1X

Keypad column

34

COL2

I/O

1X

Keypad column

35

ROW4

I/O

1X

Keypad row

36

COL0

I/O

1X

Keypad column

37

ROW2

I/O

1X

Keypad row

38

ROW3

I/O

1X

Keypad row

39

ROW0

I/O

1X

Keypad row

40

ROW1

I/O

1X

Keypad row

41

NC

Not Connected

42

SPI_EN

O

1X

SPI enable

43

SPI_IO

I/O

1X

I

2

C Data or SPI Data

44

SPI_CLK

O

2X

I

2

C Clock or SPI Clock

45

SIMCLK

O

2X

Clock for SIM interface

3V mode

46

SIMRST

O

2X

Reset for SIM interface

3V mode

47

SIMVCC

O

SIM card supply

3V mode
6mA max.

48

SIMPRES

I

SIM card detect

Connected to
SIM connector
pin 8.  Pin 4 of
SIM connector
must be pulled
down to GND
with 1 K-Ohm*

49

SIMDATA

I/O

3X

I/O for SIM interface

3V mode

50

GPO0

General purpose I/O

* See SIM socket diagram in SIM interface section

** GPO0 is a general purpose output for selection of external SIM, 3V or 5V.