Data Sheet

Smart Machine Smart Decision
SIM800F_Hardware Design_V1.00 40 2015-07-31
Table 18: Pin definition of DISP interface
For the connection between LCD and SIM800F module, please refer to below figure:
Figure 36: Connection of DISP interface
It could also be used as other function in some applications.
Table 19: DISP Multiplexing function
Pin Name Pin Number Mode0 (default) Mode 1 Mode 2 Mode 3
DISP _CLK 11 GPIO DISP _CLK SPI_CLK PCM_IN
DISP_DATA 12 GPIO DISP_DATA SPI_MOSI PCM_OUT
DISP_D/C 13 GPIO DISP_D/C SPI_MISO PCM_SYNC
DISP_CS 14 GPIO DISP_CS SPI_CS PCM_CLK
Note: These functions are not supported in the standard firmware. If you need, please contact SIMCom.
4.11 Keypad Interface
The keypad interface consists of 5 keypad column outputs and 4 keypad row inputs, supports total 20 keys.
Table 20: Pin definition of the keypad interface
Pin Name Pin Number Mode 0(default) Mode 1
KBR4 40 GPIO KBR4
KBR3 41 GPIO KBR3
KBR2 42 GPIO KBR2
Pin name Pin number Description
DISP_CLK 11 Display clock
DISP_DATA 12 Display data
DISP_D/C 13 Data/command select
DISP_CS 14 Chip select