W83977F-A Datasheet, PDF (24/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
4.7 KBC Interface
SYMBOL
KDATA
MDATA
KCLK
MCLK
GA20
GP11
(IRQIN2)
KBRST
GP12
(WDTO,
IRRX)
KBLOCK
GP13
(PLEDO,
IRTX)
PIN
59
60
67
68
56
57
58
I/O
FUNCTION
I/OD16u Keyboard Data
I/OD16u PS2 Mouse Data
I/OD16u Keyboard Clock
I/OD16u PS2 Mouse Clock
OUT12t
I/O12t
CR2A bit6= 0 (default): Keyboard GATE A20 (P21) Output.
CR2A bit6= 1: General purpose I/O port 1, bit 1. It can be
configured as an interrupt channel.
OUT12t
I/O12t
CR2A bit7= 0 (default): Keyboard Reset (P20) Output.
CR2A bit7= 1: General purpose I/O port 1, bit 2. It can be
configured as watchdog timer output or IRRX (SINC if UART C is
used as a simple serial port [W83977AF only] ) input.
IN16tu
I/O16tu
CR2B bit0= 0 (default): Keyboard KINH (P17) Input.
CR2B bit0= 1: General purpose I/O port 1, bit 3. It can be
configured as watchdog timer output or IRTX (SOUTC if UART C
is used as a simple serial port [W83977AF only] ) output.
4.8 RTC Interface
SYMBOL PIN
I/O
VBAT
64
XTAL1
63
INC
XTAL2
61
O8t
FUNCTION
RTC battery voltage input
RTC 32.768Khz Clock Input
RTC 32.768Khz Clock Output
4.9 POWER PINS
VCC
GND
20,55,
85,115
25,62,
90,120
+5V power supply for the digital circuitry
Ground
-16