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Apple 6309-341-0019 Integrated Circuit 20Pin
Description:
The Apple 6309-341-0019 is a vintage 256 × 8-bit PROM (Programmable Read-Only Memory) chip used in early Apple II systems, particularly in the Disk II 16-sector interface card. It’s functionally equivalent to the MMI 6309 or TBP28L22N, and was typically installed in the P5 or P6 ROM socket to store bootloader firmware for disk operations.
Specifications:
- Function: 256 × 8-bit PROM (2 kilobits total)
- Application: Apple II Disk II controller (16-sector firmware)
- Programming Type: Fuse-link (one-time programmable)
- Package: 20-pin DIP
- Voltage Supply: 5 V
- Output: 3-state TTL-compatible
- Access Time: ~50–70 ns
| SKU | INC-0391-C09 |
|---|
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