(China (Mainland))
Product Summary
The CDP1871ACQ 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. The CDP1871ACQ may consist of simple single-pole single-throw (SPST) mechanical switches. Inputs of the CDP1871ACQ are provided for alpha-lock, control, and shift functions, allowing 160 unique codes. An external R-C input is available for user-selectable debounce times. The N-key lock-out feature prevents unwanted key codes if two or more keys are pressed simultaneously.
Parametrics
CDP1871ACQ absolute maximum ratings: (1)(All Voltages Referenced to VSS Terminal) : -0.5V to +7V; (2)Input Voltage Range, All Inputs: -0.5V to VDD +0.5V; (3)DC Input Current, any One Input: ±10mA; (4)Storage Temperature Range (TSTG): -65℃ to +150℃.
Features
CDP1871ACQ features: (1)Directly Interfaces with CDP1800-Series Microprocessor; (2)Low Power Dissipation; (3)Three-State Outputs; (4)Scans and Generates Code for 53 Key ASCII Keyboard Plus 32 HEX Keys (SPST Mechanical Contact Switches); (5)Shift, Control, and Alpha Lock Input; (6)RC-Controlled Debounce Circuitry; (7)Single Supply 4V to 10.5V: (CDP1871A); (8)4V to 6.5V: (CDP1871AC); (9)N-Key Lockout.
Diagrams
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Negotiable |
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CDP1853 |
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Data Sheet |
Negotiable |
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