Description
The CDP1871A is a keyboard encoder designed to directly interface between a CDP1800-series microprocessor and a mechanical keyboard array, providing up to 53 ASCII coded keys and 32 HEX coded keys, as shown in the system diagram (Figure 1).
Features
- Directly Interfaces with CDP1800-Series Microprocessor.
- Low Power Dissipation.
- Three-State Outputs.
- Scans and Generates Code for 53 Key ASCII Keyboard Plus 32 HEX Keys (SPST Mechanical Contact Switches).
- Shift, Control, and Alpha Lock Input.
- RC-Controlled Debounce Circuitry.
- Single Supply 4V to 10.5V.
- . . . (CDP1871A) 4V to 6.5V.
- . . . (CDP1871AC).
- N-Key Lockout
Ordering Information
PACKAG.
CDP1871 Datasheet
