ht82k75rew Holtek Semiconductor Inc., ht82k75rew Datasheet - Page 3

• Manufacturer Part Number: ht82k75rew
• Description: Ht82m75rew/ht82k75rew 2.4ghz Transceiver 8-bit Otp Mcu
• Manufacturer: Holtek Semiconductor Inc.

Pin Description
The following table only includes the pins which are directly related to the MCU. The pin descriptions of the additional
peripheral functions are located at the corresponding section of the datasheet along with the relevant peripheral func-
tion functional description.
Rev. 1.00
PA0~PA1
PA2/TMR
PA3~PA7
PB0/SCS
PB1~PB7
PC0~PC1
PC2/INT
PC3~PC4
PC5/SDI
PC6/SDO
PC7/SCK
PD0~PD7
(HT82K75R only)
PE0~PE7
(HT82K75R only)
VSS
RES
VDD
BAT_IN
LX
VSSLX
Pin Name
I/O
I/O
I/O
I/O
I/O
I/O
I
I
I
I
CMOS/NMO
CMOS/NMO
Pull-high or
Pull-high or
Pull-high or
Pull-high or
Pull-high
Wake-up
Wake-up
Wake-up
Wake-up
Wake-up
Options
S
S
Bidirectional 8-bit input/output port. Each pin can be configured as a
wake-up input (both falling and rising edge) by a configuration option. Soft-
ware instructions determine if the pin is a CMOS output or Schmitt Trigger
input. Configuration options determine if the pins have pull-high resistors.
PA2 is shared with the external timer input pin TMR.
Bidirectional 8-bit input/output port. Each pin can be configured as a
wake-up input (both falling and rising edge) by a configuration option. Soft-
ware instructions determine if the pin is a CMOS output or Schmitt Trigger
input. Configuration options determine if the pins have pull-high resistors.
Also a configuration option determines if the PB0 is a CMOS output type or
NMOS output type. PB0 is shared with SCS of the SPI interface.
Bidirectional 8-bit input/output port. Each pin can be configured as a
wake-up input (both falling and rising edge) by a configuration option. Soft-
ware instructions determine if the pin is a CMOS output or Schmitt Trigger
input. Configuration options determine if the pins have pull-high resistors.
Also a configuration option determines if the PC pins are CMOS output type
or NMOS output type. The INT is shared with PC2, PC5~PC7 are shared
with the SPI interface.
Bidirectional 8-bit input/output port. Each nibble can be configured as
wake-up inputs (both falling and rising edge) by a configuration option. Soft-
ware instructions determine if the pin is a CMOS output or Schmitt Trigger
input. Configuration options determine if the pins have pull-high resistors.
Bidirectional 8-bit input/output port. Each nibble can be configured as
wake-up inputs (both falling and rising edge) by a configuration option. Soft-
ware instructions determine if the pin is a CMOS output or Schmitt Trigger
input. Configuration options determine if the pins have pull-high resistors.
Negative power supply, ground
Schmitt Trigger reset input. Active low
Positive power supply
Battery input
DC/DC LX switch
DC/DC ground
3
HT82M75REW/HT82K75REW
Description
June 11, 2010