INS8080AN 8-bit microprocessor IC
The INS8080AN 8-bit Microprocessor IC is a general-purpose central processing unit designed using N-channel silicon-gate MOS technology. Developed as part of the National Semiconductor 8000 series microprocessor family, this device functions as the core processing unit for microcomputer systems and embedded electronic platforms.
Features:
- 2µs instruction cycle for rapid processing.
- Variable length instructions to optimize code efficiency.
- Six general-purpose registers plus an accumulator for data manipulation.
- Direct addressing capability up to 65K bytes of memory.
- Variable length stack accessed by a 16-bit stack pointer.
- Addresses up to 256 input and 256 output ports.
Specifications:
| Parameter | Value |
|---|---|
| Instruction Cycle Time | 2µs |
| Clock Period | 0.48µs-2µs |
| Memory Addressing | 65KB |
| I/O Ports | 256 input/256 output |
| Data Bus Width | 8bit |
| Address Bus Width | 16bit |
| Supply Voltage VCC | 5V |
| Supply Voltage VDD | 12V |
| Supply Voltage VBB | -5V |
| Operating Temperature | 0°C-70°C |
| Power Dissipation | 1.5W |
| Package Type | DIP-40 |
Pin Configuration:
| Pin No. | Pin Name | Type | Function / Description |
|---|---|---|---|
| 1 | A10 | Output | Address Bus Bit 10 |
| 2 | GND | Power | Ground (0V) |
| 3 | D4 | I/O | Data Bus Bit 4 |
| 4 | D5 | I/O | Data Bus Bit 5 |
| 5 | D6 | I/O | Data Bus Bit 6 |
| 6 | D7 | I/O | Data Bus Bit 7 |
| 7 | D3 | I/O | Data Bus Bit 3 |
| 8 | D2 | I/O | Data Bus Bit 2 |
| 9 | D1 | I/O | Data Bus Bit 1 |
| 10 | D0 | I/O | Data Bus Bit 0 |
| 11 | –5V | Power | –5V Supply (VBB) |
| 12 | RESET | Input | Reset signal (active high); clears PC and disables interrupts |
| 13 | HOLD | Input | Hold request; forces address/data buses to high impedance |
| 14 | INT | Input | Interrupt request |
| 15 | φ2 | Input | Clock Phase 2 |
| 16 | INTE | Output | Interrupt Enable status |
| 17 | DBIN | Output | Data Bus In; indicates data bus is in input mode |
| 18 | WR | Output | Write strobe (active low); indicates write operation |
| 19 | SYNC | Output | Synchronizing signal; marks start of machine cycle |
| 20 | +5V | Power | +5V Supply (VCC) |
| 21 | HLDA | Output | Hold Acknowledge; CPU has entered HOLD mode |
| 22 | φ1 | Input | Clock Phase 1 |
| 23 | READY | Input | Ready signal; synchronizes CPU with slow memory/I/O |
| 24 | WAIT | Output | Wait; CPU is in WAIT mode |
| 25 | A0 | Output | Address Bus Bit 0 (LSB) |
| 26 | A1 | Output | Address Bus Bit 1 |
| 27 | A2 | Output | Address Bus Bit 2 |
| 28 | A3 | Output | Address Bus Bit 3 |
| 29 | A4 | Output | Address Bus Bit 4 |
| 30 | A5 | Output | Address Bus Bit 5 |
| 31 | A6 | Output | Address Bus Bit 6 |
| 32 | A7 | Output | Address Bus Bit 7 |
| 33 | A8 | Output | Address Bus Bit 8 |
| 34 | A9 | Output | Address Bus Bit 9 |
| 35 | A15 | Output | Address Bus Bit 15 (MSB) |
| 36 | A12 | Output | Address Bus Bit 12 |
| 37 | A13 | Output | Address Bus Bit 13 |
| 38 | A14 | Output | Address Bus Bit 14 |
| 39 | A11 | Output | Address Bus Bit 11 |
| 40 | A10 | Output | Address Bus Bit 10 |
Applications:
- Central processing unit in microcomputer systems.
- Embedded control in industrial automation equipment.
- Data processing in legacy computing and emulation projects.
- Interface management for memory and peripheral devices.
- Real-time interrupt handling in instrumentation systems.
Package Include:
1x INS8080AN 8-bit Microprocessor IC.