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HT56R65

TinyPower™ A/D Type with LCD 8-Bit OTP MCU

Holtek Semiconductor 

HT56R62/HT56R65

HT56R642/HT56R644/HT56R654/HT56R656

TinyPowerTM A/D Type with LCD 8-Bit OTP MCU

Pin Name

I/O

Configuration

Option

Description

HT56R644/HT56R654

VLCD

I

—

LCD bias pin − must less than or equal to VDD

SEG0/SDO

SEG1/SDI/SDA

SEG2/SCK/SCL

SEG3/SCS

SEG4/PCLK

SEG5/PINT

SEG6~SEG31

COM15/SEG32~

COM8/SEG39

O

I/O

I/O

I/O

O

I/O

O

O

SIM

PINT

SEG0~SEG31 are LCD driver outputs for LCD panel segments.

SEG0 is pin-shared with the SPI bus data output line, SDO.

SEG1 is pin-shared with the SPI bus data input line, SDI and the I2C Bus

data line SDA.

SEG2 is pin-shared with the SPI bus clock line, SCK and the I2C Bus

clock line SCL.

SEG3 is pin-shared with the SPI bus select line, SCS.

SEG4 is pin-shared with the Peripheral Clock line, PCLK.

SEG5 is pin-shared with the Peripheral Interrupt line, PINT.

The SEG0~SEG23 lines can be can be chosen to be either segment

drivers or CMOS outputs using control bits in the LCD control registers.

COM0~COM7

O

—

COM0~COM2 are the LCD common outputs.

HT56R656

VLCD

I

—

LCD bias pin − must less than or equal to VDD

SEG0/SDO

SEG1/SDI/SDA

SEG2/SCK/SCL

SEG3/SCS

SEG4/PCLK

SEG5/PINT

SEG6~SEG47

COM15/SEG48~

COM8/SEG55

O

I/O

I/O

I/O

O

I/O

O

O

SIM

PINT

SEG0~SEG47 are LCD driver outputs for LCD panel segments.

SEG0 is pin-shared with the SPI bus data output line, SDO.

SEG1 is pin-shared with the SPI bus data input line, SDI and the I2C Bus

data line SDA.

SEG2 is pin-shared with the SPI bus clock line, SCK and the I2C Bus

clock line SCL.

SEG3 is pin-shared with the SPI bus select line, SCS.

SEG4 is pin-shared with the Peripheral Clock line, PCLK.

SEG5 is pin-shared with the Peripheral Interrupt line, PINT.

The SEG0~SEG23 lines can be can be chosen to be either segment

drivers or CMOS outputs using control bits in the LCD control registers.

COM0~COM7

O

—

COM0~COM7 are the LCD common outputs.

Note: The Pin Description tables represents the largest package type available, therefore some of the pins and

functions may not be available on smaller package types.

Absolute Maximum Ratings

Supply Voltage ................................................................................................... VSS-0.3V~VSS+6.0V

Input Voltage ......................................................................................................VSS-0.3V~VDD+0.3V

Storage Temperature .................................................................................................... -50˚C~125˚C

Operating Temperature .................................................................................................. -40˚C~85˚C

IOL Total ..................................................................................................................................... 80mA

IOH Total ................................................................................................................................... -80mA

Total Power Dissipation ........................................................................................................ 500mW

Note: These are stress ratings only. Stresses exceeding the range specified under "Absolute

Maximum Ratings" may cause substantial damage to the device. Functional operation of

this device at other conditions beyond those listed in the specification is not implied and

prolonged exposure to extreme conditions may affect device reliability.

Rev. 1.30

13

March 6, 2013

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