Semiconductor & Computer Engineering
| Monolithic Memories 5700/6700 | |
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| Developer | Monolithic Memories |
| Manufacturer | Monolithic Memories |
| Type | microcontrollers |
| Production | 1974 |
| Architecture | 4-bit, bit-slice |
| ISA | 5700 |
| Word size | 4 bit 0.5 octets
1 nibbles |
| Technology | Schottky TTL |
| Clock | 1 MHz-5 MHz |
| Package | DIP40 |
The MMI 5700/6700 was a family of 4-bit bit-slice microcontrollers developed by Monolithic Memories Incorporated and introduced in 1974. This series was sold as very simple MCUs aimed to replace what would otherwise be around 25-30 discrete logic chips. Typically multiple MCUs were hooked up together to create large data word sizes such as 8-bit and 16-bit.
Contents
2nd sources[edit]
Members[edit]
| Part | Frequency | Description |
|---|---|---|
| 5701 (MMI5701D) | 4 MHz | Commercial version |
| 6701 (MMI6701D) | 5 MHz | Military version |
Design[edit]
The Monolithic Memories 5701/6701 bit slice processor family was introduced in 1974. This 4-bit processor could be used to build microprocessor systems of any word length in multiples of 4 - 4-bit, 8-bit, 12-bit, and so on.
The processor had 16 4-bit accumulators, one scratch accumulator, and came with 352 on-chip ROM, that was used to store instructions' microcode. Standard instruction set included 36 arithmetic and logic instructions, but, if desired, MMI could produce custom-order chips with client-specific instructions in the ROM. Processor instructions were complex, i.e. they could perform multiple operations at once - one arithmetic or logic instruction, and one or more of the following actions: load register, shift left or right, and store result. The 5701/6701 was capable of executing one instruction per cycle.
The 5701/6701 family consisted from two members: 5701 is a BSP operating in military temperature range, and 6701 is a bit-slice processor operating in commercial temperature range. Both types of processors were manufactured in 40-pin ceramic DIP package.
Documents[edit]
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| designer | Monolithic Memories + |
| full page name | monolithic memories/5700 + |
| instance of | microcontroller family + |
| instruction set architecture | 5700 + |
| main designer | Monolithic Memories + |
| manufacturer | Monolithic Memories + |
| name | Monolithic Memories 5700/6700 + |
| package | DIP40 + |
| technology | Schottky TTL + |
| word size | 4 bit (0.5 octets, 1 nibbles) + |