NEC D8748HD 8-Bit Microcontroller 1K×8 EPROM 5V 100mA PDIP-40
The D8748HD is a high-performance, self-sufficient 8-bit parallel microcontroller fabricated using the advanced N-channel silicon gate HMOS-E process. Designed to function as a complete computer on a single chip, it integrates program memory, data memory, I/O lines, and an oscillator into one 40-pin package. This component is an ideal solution for efficient control-oriented tasks and arithmetic processing, offering the flexibility of erasable EPROM for prototyping and production.
Features
- Integrated Memory: Features of on-chip EPROM and of internal RAM.
- High Efficiency: Over 96 instructions; 90% are single-byte, ensuring optimized program memory usage.
- Versatile I/O: Provides 27 dedicated I/O lines for system interfacing.
- On-Chip Resources: Includes an 8-bit interval timer/event counter and an on-board oscillator/clock circuit.
- Expandable: Fully compatible with MCS-80/MCS-85 peripherals for systems requiring additional memory or I/O capability.
- Dual Interrupts: Supports two single-level interrupts for real-time task management.
Specifications
| Parameter | Specification |
|---|---|
| Device Architecture | 8-Bit Parallel Microcontroller (HMOS-E) |
| Internal Program Memory (EPROM) | 1K x 8 bits |
| Internal Data Memory (RAM) | 64 x 8 bits |
| Instruction Cycle Time | 1.35 μs (Minimum) |
| Operating Voltage (Vcc) | 5V ± 5% |
| Programming Voltage (Vdd) | 21V ± 0.5V |
| Supply Current (Icc) | 100 mA (Maximum) |
| I/O Lines | 27 Dedicated Lines |
| Timer/Event Counter | 8-bit Interval Timer |
| Instruction Set | 96+ Instructions (90% Single-Byte) |
| Package Type | 40-Lead Cerdip (PDIP-40) |
| Package Dimensions | 52 x 16.6 x 8.2 mm |
| Oscillator | On-board Clock Circuitry |
Applications
- Embedded Control
- Arithmetic Processing
- Peripheral Interfacing
- Prototyping
Package Content
- 1 x NEC D8748HD 8-Bit Microcontroller 1K×8 EPROM 5V 100mA PDIP-40