HT82K94A HOLTEK [Holtek Semiconductor Inc], HT82K94A Datasheet - Page 3

• Manufacturer Part Number: HT82K94A
• Description: USB Multimedia Keyboard Encoder 8-Bit MCU
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

Pin Assignment
Pin Description
Rev. 1.00
PA0~PA3
PA4/EXT
PA5~PA6
PA7/TMR1
PB0~PB7
PC0~PC7
PD0~PD3
PD4/TMR0
PD5~PD7
PE0~PE7
Pin Name
I/O
I/O
I/O
I/O
I/O
I/O
CMOS/NMOS/PMOS
ROM Code
Wake-up
Wake-up
Wake-up
Wake-up
Wake-up
Pull-high
Pull-high
Pull-high
Pull-high
Pull-high
Option
Bidirectional 8-bit input/output port. Each bit can be configured as a
wake-up input by ROM code option. The input or output mode is con-
trolled by PAC (PA control register).
Pull-high resistor options: PA0~PA7
CMOS/NMOS/PMOS options: PA0~PA7
Wake-up options: PA0~PA7
PA4 and PA7 are pin-shared with EXT and TMR1 input, respectively.
Bidirectional 8-bit input/output port. Software instructions determine the
CMOS output or Schmitt trigger input with pull-high resistor (determined
by pull-high options).
Wake-up options: PB0~PB7
Bidirectional I/O lines. Software instructions determine the CMOS out-
put or Schmitt trigger input with pull-high resistor (determined by
pull-high options).
Wake-up options: PC0~PC7
Bidirectional I/O lines. Software instructions determine the CMOS out-
put or Schmitt trigger input with pull-high resistor (determined by
pull-high options).
Wake-up options: PD0~PD7
PD4 is pin-shared with TMR0 input.
Bidirectional I/O lines. Software instructions determine the CMOS out-
put or Schmitt trigger input with pull-high resistor (determined by
pull-high options).
Wake-up options: PE0~PE7
3
Description
HT82K94E/HT82K94A
November 22, 2005