HT82K70E-L datasheet(3/59 Pages) HOLTEK

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Pin Description

Pin Name

I/O

Options

Description

PA0/Z1

PA1/Z2

PA2/TMR0

PA3/TMR1

PA4/SCS

PA5/SCK

PA6/SDI

PA7/SDO

I/O

Wake-up

Pull-high

CMOS or NMOS

Schmitt trigger or

non-Schmitt

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.

PB0/V1

PB1/V2

PB2~PB7

I/O

Wake-up

Pull-high

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.

PC0~PC1

PC2/INT

PC3~PC7

I/O

Wake-up

Pull-high

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.

PD0~PD7

I/O

Wake-up

Pull-high

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.

PE0~PE3

PE4/BAT

PE5~PE7

I/O

Wake-up

Pull-high

PE4 IO or BAT

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.

PF0~PF2

I/O

Wake-up

Pull-high

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

Crystal or RC

OSC1, OSC2 are connected to an external RC network or external crystal,

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 sys-

tem clock at 1/4 frequency.

RES

Schmitt trigger reset input. Active low

VSS

¾¾

Negative power supply, ground

VDD

¾¾

Positive power supply

Note:

Each pin can be chosen via configuration option to have a wake-up function.

HT82K70E-L/HT82K70A-L/HT82K76E-L

Rev. 1.20

February 1, 2011

HT82K70E-L Datasheet(PDF) 3 Page - Holtek Semiconductor Inc

HT82K70E-L Datasheet(HTML) 3 Page - Holtek Semiconductor Inc

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