HT82K68 Holtek Semiconductor Inc, HT82K68 Datasheet - Page 3

• Manufacturer Part Number: HT82K68
• Description: Multimedia Keyboard Encoder OTP
• Manufacturer: Holtek Semiconductor Inc

Pin Assignment
Pin Description
PA0~PA7
PB0~PB7
PC0
PC1
Pin Name I/O
I/O
I/O
I/O
I/O
ROM Code
Pull-high
Pull-high
Pull-high
Pull-high
Wake-up
Wake-up
Wake-up
Option
or None
or None
or None
or None
Bidirectional 8-bit input/output port. Each bit can be configured
as a wake-up input by ROM code option. Software* instructions
determine the CMOS output or schmitt trigger input with or with-
out pull-high resistor 12K.
Bidirectional 8-bit input/output port. Software* instructions de-
termine the CMOS output or schmitt trigger input with or without
pull-high resistor.
This pin is an I/O port. Open drain output with pull-high resistor
and can be used as DATA or CLOCK line of PS2. This pin can be
configured as a wake-up input by ROM code option.
This pin is an I/O port. open drain output with pull-high resistor
and can be used as DATA or CLOCK line of . This pin can be con-
figured as a wake-up input by ROM code option.
Preliminary
3
Description
HT82K68E
August 8, 2000