Semiconductor & Computer Engineering
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The '''Hitachi HMCS40''' is a [[microprocessor family|family]] of [[4-bit architecture|4-bit]] [[microcontroller]]s developed by [[Hitachi]]. Two types of each component were manufactured, one using [[PMOS logic]] for low cost and another using [[CMOS]] where lower power was more desired than cost. | The '''Hitachi HMCS40''' is a [[microprocessor family|family]] of [[4-bit architecture|4-bit]] [[microcontroller]]s developed by [[Hitachi]]. Two types of each component were manufactured, one using [[PMOS logic]] for low cost and another using [[CMOS]] where lower power was more desired than cost. | ||
| − | The chips contained 4-bit [[ALU]] performing [[BCD]] arithmetic. 512 | + | The chips contained 4-bit [[ALU]] performing [[BCD]] arithmetic. 512 to 2,048 Words (10-bit ea) of program [[ROM]]. Additional 128 Words (10-bit ea) of pattern ROM. 32 to 160 digits (4-bit ea) of data [[RAM]]. Chips also contained Event/Timer-Counter and 22-44 I/O lines. Output was aimed for driving dot matrix Liquid Crystal displays. The HMCS40 was used in a very large array of games, toys, controllers, and office equipment. |
== Devices == | == Devices == | ||
Revision as of 23:13, 31 October 2015
The Hitachi HMCS40 is a family of 4-bit microcontrollers developed by Hitachi. Two types of each component were manufactured, one using PMOS logic for low cost and another using CMOS where lower power was more desired than cost.
The chips contained 4-bit ALU performing BCD arithmetic. 512 to 2,048 Words (10-bit ea) of program ROM. Additional 128 Words (10-bit ea) of pattern ROM. 32 to 160 digits (4-bit ea) of data RAM. Chips also contained Event/Timer-Counter and 22-44 I/O lines. Output was aimed for driving dot matrix Liquid Crystal displays. The HMCS40 was used in a very large array of games, toys, controllers, and office equipment.
Devices
| Part | Program (bits) | Data (bits) | Registers | Stack Registers | I/O Lines |
|---|---|---|---|---|---|
| HMCS42 | 512x10 ROM | 32x4 RAM | ? | ? | 22 I/O lines |
| HMCS43 | 1024x10 ROM | 80x4 RAM | ? | ? | 32 I/O lines |
| HMCS44 | 2048x10 ROM | 160x4 RAM | 8 | 4 | 32 I/O lines |
| HMCS45 | 2048x10 ROM | 160x4 RAM | 6 | 4 | 44 I/O lines |
| HMCS46 | 4096x10 ROM | 256x4 RAM | 8 | 4 | 32 I/O lines |
| HMCS47 | 4096x10 ROM | 256x4 RAM | 6 | 4 | 44 I/O lines |
Design
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