W83L951DG Datasheet, PDF (22/112 Pages) Winbond – Mobile Keyboard and Embedded Controller

W83L951DG/W83L951FG
5.5 GPIO1 Part
This part contains:
General Purpose I/O Function
Default is General Purpose I/O. Change the value of GPIO1 and GPIOD1 register to determine 8
input/output.
Keyboard Matrix Column Output
Use Chipctrl2 register bit 3 to enable {GP0, GP1, GP20~23} keyboard scan and GP3 key wakeup
interrupt function.
Internal Flash Access Interface
When TEST# and RESET# are both low, Internal Flash Access Interface is enabled and other
functions are disabled.
Table 5-6 GPIO1 pin configuration table
SYMBOL PIN I/O
FUNCTION
GP17
KC15
FA15
General Purpose I/O Function
79 I/O_12tsm Keyboard Matrix Column Output
Internal Flash Address
GP16
KC14
FA14
General Purpose I/O Function
80 I/O_12tsm Keyboard Matrix Column Output
Internal Flash Address
GP15
KC13
FA13
General Purpose I/O Function
81 I/O_12tsm Keyboard Matrix Column Output
Internal Flash Address
GP14
KC12
FA12
General Purpose I/O Function
82 I/O_12tsm Keyboard Matrix Column Output
Internal Flash Address
GP13
KC11
FA11
General Purpose I/O Function
83 I/O_12tsm Keyboard Matrix Column Output
Internal Flash Address
GP12
KC10
FA10
General Purpose I/O Function
84 I/O_12tsm Keyboard Matrix Column Output
Internal Flash Address
GP11
KC9
FA9
General Purpose I/O Function
85 I/O_12tsm Keyboard Matrix Column Output
Internal Flash Address
GP10
KC8
FA8
General Purpose I/O Function
86 I/O_12tsm Keyboard Matrix Column Output
Internal Flash Address
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