The 32K x 8 Reprogrammable Registered PROM CY7C277 is a product of Cypress Semiconductor Corporation. It has the following features: Windowed for reprogrammability, CMOS for optimum speed/power, High speed, Low power, 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
The document describes the CY7C277, a high-performance 32K x 8-bit CMOS PROM available in commercial and military temperature ranges. It features EPROM technology with 100% programmable cells, allowing for reprogrammability via an erasure window on specific ceramic packages.
Key characteristics include TTL-compatible I/O, low power consumption (60 mW commercial), and high speed options ranging from 30ns to 50ns address set-up time. The device supports both asynchronous and synchronous output modes and includes programmable address latch enable inputs.
| Memory Capacity | 32K word by 8-bit |
|---|---|
| Technology | CMOS EPROM |
| Supply Voltage (Commercial) | 5V +/- 10% |
| Power Consumption (Max Commercial) | 60 mW |
| Static Discharge Voltage | > 2001V |
Yes, ceramic packages are equipped with an erasure window; when exposed to UV light, the PROM is erased and can then be reprogrammed.
The device features on-chip edge-triggered output registers.
Yes, it provides TTL-compatible I/O.