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77
CY7C277
32K x 8 Reprogrammable Registered PROM
Features
• Windowed for reprogrammability • CMOS for optimum speed/power • High speed
— 30-ns address set-up — 15-ns clock to output • Low power — 60 mW (commercial) — 715 mW (military)
• Programmable address latch enable input
• Programmable synchronous or asynchronous output enable
• On-chip edge-triggered output registers
• EPROM technology, 100% programmable
• Slim 300-mil, 28-pin plastic or hermetic DIP • 5V ±10% VCC, commercial and military • TTL-compatible I/O
• Direct replacement for bipolar PROMs
• Capable of withstanding greater than 2001V static discharge
Logic Block Diagram
A14
A13 X
A12 A11
ADDRESS ROW
DECODER
256 x 1024 PROGRAMMABLE
8-BIT 1 OF 128
A10
1 OF 256
ARRAY
MUX
A9
A8 15-BIT
A7 ADDRESS
A6
TRANSPARENT