HT82M99E-18 HOLTEK [Holtek Semiconductor Inc], HT82M99E-18 Datasheet - Page 2

• Manufacturer Part Number: HT82M99E-18
• Description: USB Mouse Encoder 8-Bit OTP MCU
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

Pin Assignment
Pin Description
Rev. 1.50
PA0~PA7
PB2, PB3
PB4, PB7
VSS
RES
VDD
V33O
USBD+/CLK
USBD-/DATA
OSCI
OSCO
Pin Name
I/O
I/O
I/O
I/O
I/O
I/O
O
O
I
I
CMOS/NMOS/PMOS
ROM Code
Wake-up
Wake-up
Pull-high
Pull-high
Pull-high
Pull-low
Pull-low
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
Pull-low resistor options: PA0~PA3
CMOS/NMOS/PMOS options: PA0~PA7
Falling edge wake-up options: PA0~PA1, PA4~PA7
Rising and falling edge wake-up options: PA2~PA3
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).
Pull-low resistor for options: PB2, PB3
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).
The PB can be used as analog input of the analog to digital converter
(determined by options).
Falling edge wake-up options: PB4, PB7
Negative power supply, ground
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
USBD- or PS2 DATA I/O line
USB or PS2 function is controlled by software control register
OSCI, OSCO are connected to a 6MHz or 12MHz crystal/resonator (de-
termined by software instructions) for the internal system clock.
2
Description
November 19, 2004
HT82M99E