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CY7C197 Datasheet 256Kx1 Static RAM

Manufacturer: Cypress (now Infineon)

Overview: 97 CY7C197 256Kx1 Static RAM.

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General Description

The CY7C197 is a high-performance CMOS static RAM organized as 256K words by 1 bit.

Easy memory expansion is pro- Logic Block Diagram DI Pin Configurations DIP/SOJ Top View INPUT BUFFER A13 A14 A15 A16 A17 A0 A1 A2 A3 A4 A0 A1 A2 A3 A4 A5 A6 A7 A8 DOUT WE GND 1 24 2 23 3 22 4 21 5 20 7C197 6 19 18 7 8 17 9 16 10 15 14 11 12 13 VCC A17 A16 A15 A14 A13 A12 A11 A10 A9 DIN CE C197-2 CE LCC Top View A2 A1 A0 V CC A 17 NC A3 A4 A5 A6 A7 A8 DOUT NC 3 2 1 28 27 4 26 NC 5 25 A16 6 24 A15 7 23 A14 8 7C197 22 A13 9 21 A12 10 20 A11 11 19 A10 12 18 NC 1314151617 WE GND CE DIN A9 C197-3 ROW DECODER 1024 x 256 ARRAY SENSE AMPS DO COLUMN DECODER POWER DOWN A5 A6 A7 A8 A9 A10 A11 A12 WE C197-1 Selection Guide 7C197-12 Maximum Access Time (ns) Maximum Operating Current (mA) Maximum Standby Current (mA) 12 150 30 7C197-15 15 140 30 7C197-20 20 135 30 7C197-25 25 95 30 7C197-35 35 95 30 30 7C197-45 45 Cypress Semiconductor Corporation Document #: 38-05049

Key Features

  • High speed.
  • 12 ns.
  • CMOS for optimum speed/power.
  • Low active power.
  • 880 mW.
  • Low standby power.
  • 220 mW.
  • TTL-compatible inputs and outputs.
  • Automatic power-down when deselected vided by an active LOW Chip Enable (CE) and three-state drivers. The CY7C197 has an automatic power-down feature, reducing the power consumption by 75% when deselected. Writing to the device is accomplished when the Chip Enable (CE) and Write E.

📁 Similar Datasheet

Brand Logo Part Number Description Manufacturer
Cypress Logo CY7C197BN 256-Kbit (256K x 1) Static RAM Cypress

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