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HTG12N0 Datasheet 4-bit Microcontroller

Manufacturer: Holtek Semiconductor Inc

Overview: HTG12N0 4-Bit Microcontroller.

General Description

The HTG12N0 is the processor from HOLTEK’s 4-bit stand alone single chip microcontroller specially designed for LCD display and time piece product applications.

It is ideally suited for multiple LCD time piece low power applications among which are calculators, scales, calendar and hand held LCD products.

1 18th Mar ’99 HTG12N0 Block Diagram Notes: ACC: Accumulator PB0, PB1: ROM bank switch PC1: LCD On/Off switch PS, PM0~PM2: Input ports R0~R4: Working registers PC0: RAM bank switch PA, PC2~PC3: Output ports 2 18th Mar ’99 HTG12N0 Pad Assignment Chip size: 3430 × 3730 (µm)2 * The IC substrate should be connected to VSS in the PCB layout artwork.

Key Features

  • Operating voltage: 2.4V~3.5V Seven input lines Six output lines Halt feature reduces power consumption Up to 4µs instruction cycle with 1MHz system clock 4K × 8 × 4 program ROM Data memory RAM size 256 × 4 bits 64 segments × 8 commons, 1/5 bias LCD driver.
  • 8-bit table read instruction Five working registers Internal timer overflow One level subro.

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