ht82k70e-l Holtek Semiconductor Inc., ht82k70e-l Datasheet - Page 3

• Manufacturer Part Number: ht82k70e-l
• Description: I/o Type 8-bit Otp Mcu
• Manufacturer: Holtek Semiconductor Inc.

Pin Description
Note:
Rev. 1.00
PA0/Z1
PA1/Z2
PA2/TMR0
PA3/TMR1
PA4/SCS
PA5/SCK
PA6/SDI
PA7/SDO
PB0/V1
PB1/V2
PB2~PB7
PC0~PC1
PC2/INT
PC3~PC7
PD0~PD7
PE0~PE3
PE4/BAT
PE5~PE7
PF0~PF2
OSC1
OSC2
RES
VSS
VDD
Pin Name
Each pin can be chosen via configuration option to have a wake-up function.
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
I
I
Schmitt trigger or
CMOS or NMOS
PE4 IO or BAT
Crystal or RC
non-Schmitt
Wake-up
Pull-high
Wake-up
Pull-high
Wake-up
Pull-high
Wake-up
Pull-high
Wake-up
Pull-high
Wake-up
Options
Pull-high
trigger
Bidirectional 8-bit input/output port. Each pin can be configured as a
wake-up input by a configuration option. Software instructions determine if
the pin is a CMOS output or input. Configuration options determine if the
pins have pull-high resistors. Configuration options determine whether the
pins are configured as CMOS or NMOS pins. Configuration options deter-
mine whether the pins are configured with Schmitt trigger or non-Schmitt
trigger inputs. PA2 is shared with the external timer input pin TMR0. PA3 is
shared with the external timer input pin TMR1. PA0 and PA1 are shared
with the Z1 and Z2 pins. PA4~ PA7 are pins shared with SPI interface.
Bidirectional 8-bit input/output port. Each pin, PB0 and PB1 can be config-
ured as wake-up inputs using configuration options. Two configuration op-
tions, one for pins PB2 and PB3 and one for pins PB4~PB7, can also setup
these pin groups as wake-up inputs. Software instructions determine if the
pin is a CMOS output or Schmitt Trigger input. Configuration options deter-
mine if each nibble, PB0~PB3 and PB4~PB7 have pull-high resistors. PB0
and PB1 are shared with the V1 and V2 pins.
Bidirectional 8-bit input/output port. Each nibble, PC0~PC3 and PC4~PC7,
can be configured as wake-up inputs by configuration options. Software in-
structions determine if the pin is a CMOS output or Schmitt Trigger input.
Configuration options determine if each nibble, PC0~PC3 and PC4~PC7
have pull-high resistors. PC2 is pin shared with the external interrupt input.
Bidirectional 8-bit input/output port. Each nibble, PD0~PD3 and PD4~PD7,
can be configured as wake-up inputs by configuration options. Software in-
structions determine if the pin is a CMOS output or Schmitt Trigger input.
Configuration options determine if each nibble, PD0~PD3 and PD4~PD7
have pull-high resistors.
Bidirectional 8-bit input/output port. Each nibble, PE0~PE3 and PE4~PE7,
can be configured as wake-up inputs by configuration options. Software in-
structions determine if the pin is a CMOS output or Schmitt Trigger input.
Configuration options determine if each nibble, PE0~PE3 and PE4~PE7
have pull-high resistors. A configuration option determines if PE4 is an I/O
pin or a Battery input pin.
Bidirectional 3-bit input/output port. The pins, PF0~PF2 can be configured
together to be wake-up inputs using a configuration options. Software in-
structions determine if the pin is a CMOS output or Schmitt Trigger input. A
configuration option determine if the pins have pull-high resistors.
OSC1, OSC2 are connected to an external RC network or external crys-
tal,determined by configuration option, for the internal system clock. If the
RC system clock option is selected, pin OSC2 can be used to measure the
system clock at 1/4 frequency.
Schmitt trigger reset input. Active low
Negative power supply, ground
Positive power supply
3
Description
HT82K70E-L/HT82K76E-L
September 15, 2009