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SIM800L 数据表(PDF) 46 Page - SIMCom

部件名 SIM800L
功能描述  Hardware Design_V2.02
PDF  73 Pages
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制造商  SIMCOM [SIMCom]
网页  https://www.simcom.com
标志 SIMCOM - SIMCom

SIM800L 数据表(HTML) 46 Page - SIMCom

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Table 23: Pin definition of the keypad interface
Pin name
Pin number
Function
Default state
KBC0
20
Pull up
KBC1
25
Pull down
KBC2
22
Pull down
KBC3
21
Pull down
KBC4
24
Keypad matrix column
Pull down
KBR0
62
Pull down
KBR1
60
Pull down
KBR2
61
Pull down
KBR3
23
Pull down
KBR4
63
Keypad matrix row
Pull down
Note: Please be sure to increase the ESD protection devices in product design phase, and make sure have ESD protection devices
in the final product.
4.10.1. Keypad Multiplexing Function
Table 24: Keypad multiplexing function
Pin name
Pin number
Mode 0(default)
Mode 1
KBC0
20
KBC0
GPIO6
KBC1
25
KBC1
GPIO7
KBC2
22
KBC2
GPIO8
KBC3
21
KBC3
GPIO9
KBC4
24
KBC4
GPIO10
KBR0
62
KBR0
GPIO11
KBR1
60
KBR1
GPIO12
KBR2
61
KBR2
GPIO13
KBR3
23
KBR3
GPIO14
KBR4
63
KBR4
GPIO15
Note: Multiplexing function need different software supply.
4.11. I2C Bus
The SIM800H&SIM800L provides an I2C interface which is only used in the embedded AT application.
Table 25: Pin definition of the I2C
Pin name
Pin number
Description
SCL
74
I2C serial bus clock(open drain output)
SDA
75
I2C serial bus data(open drain output)
Notes:
1. This function is not supported in the standard firmware. If customer wants this function, the firmware must be customized.
Please contact SIMCom for more details.
SIM800H&SIM800L_Hardware Design_V2.02
46
2015-07-27



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