ht82k95e Holtek Semiconductor Inc., ht82k95e Datasheet - Page 3

• Manufacturer Part Number: ht82k95e
• Description: Ht82k95e/ht82k95a -- Usb Multimedia Keyboard Encoder 8-bit Mcu
• Manufacturer: Holtek Semiconductor Inc.

Pin Assignment
Pin Description
Rev. 2.00
PA0~PA5
PA6/TMR0
PA7/TMR1
PB0~PB7
PD0~PD7
VSS
PC0~PC7
RES
VDD
V33O
USBD+/CLK
Pin Name
I/O
I/O
I/O
I/O
I/O
I/O
O
I
CMOS/NMOS/PMOS
ROM Code
Wake-up
Wake-up
Wake-up
Wake-up
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
PA6 and PA7 are pin-shared with TMR0 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: PD0~PD7
Negative power supply, ground
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
Schmitt trigger reset input. Active low
Positive power supply
3.3V regulator output
USBD+ or PS2 CLK I/O line
USB or PS2 function is controlled by software control register
3
Description
HT82K95E/HT82K95A
April 16, 2008