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HT56R644 Datasheet(PDF) 7 Page - Holtek Semiconductor Inc

Part # HT56R644
Description  TinyPower A/D Type with LCD 8-Bit OTP MCU
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT56R644 Datasheet(HTML) 7 Page - Holtek Semiconductor Inc

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Pin Name
I/O
Configuration
Option
Description
HT56R644/HT56R654
VLCD
I
¾
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 I
2C Bus
data line SDA.
SEG2 is pin-shared with the SPI bus clock line, SCK and the I
2C 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 driv-
ers or CMOS outputs using control bits in the LCD control registers.
COM0~COM7
O
¾
COM0~COM2 are the LCD common outputs.
HT56R656
VLCD
I
¾
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 I
2C Bus
data line SDA.
SEG2 is pin-shared with the SPI bus clock line, SCK and the I
2C 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 driv-
ers or CMOS outputs using control bits in the LCD control registers.
COM0~COM7
O
¾
COM0~COM7 are the LCD common outputs.
Note:
The Pin Description tables represents the largest package type available, therefore some of the pins and func-
tions may not be available on smaller package types.
Absolute Maximum Ratings
Supply Voltage ...........................VSS
-0.3V to VSS+6.0V
Storage Temperature ............................
-50°Cto125°C
Input Voltage..............................VSS
-0.3V to VDD+0.3V
Operating Temperature...........................
-40°Cto85°C
IOL Total ................................................................80mA
IOH Total..............................................................
-80mA
Total Power Dissipation .....................................500mW
Note: These are stress ratings only. Stresses exceeding the range specified under
²Absolute Maximum Ratings² 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.
HT56R62/HT56R65
HT56R642/HT56R644/HT56R654/HT56R656
Rev. 1.00
7
July 20, 2009


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