628128 128Kx8 70ns Low-Power CMOS RAM – Datasheet

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The 628128 is a high performance, very low power CMOS Static Random Access Memory organized as 131,072 words by 8 bits and operates from a very low voltage of 4.5V to 5.5V power supply Advanced CMOS technology and circuit techniques provide both high speed and low power features with a typical CMOS standby current of 0.6uA and maximum access time of 70ns in 5V operation.

Easy memory expansion is provided by an active LOW chip enable (CE1), an_active HIGH chip enable (CE2), an active LOW output-enable (OE), and three-state output drivers. The Ws628128 has an automatic power-down feature, reducing the power consumption significantly when the chip is deselected. The WS628128 is available in the JEDEC standard 32 pin 600mil Plastic DIP and 450mil Plastic SOP. 8mmx20mm TSOP, and 8mmx13.4mm STSOP.

628128 Pinout

628128 Pin Configuration

Pin NoPin NameDescription
1NC Address Pin 14
2A16 Address Pin 16
3 A14 Address Pin 14
4A12Address Pin 12
5A7 Address Pin 7
6A6 Address Pin 6
7A5 Address Pin 5
8A4 Address Pin 4
9A3 Address Pin 3
10A2Address Pin 2
11A1Address Pin 1
12A0 Address Pin 0
13DQ0Data Inputs/Outputs 0
14 DQ1Data Inputs/Outputs 1
15 DQ2Data Inputs/Outputs 2
16VSSGround Pin
17 DQ3Data Inputs/Outputs 3
18 DQ4Data Inputs/Outputs 4
19 DQ5Data Inputs/Outputs 5
20 DQ6Data Inputs/Outputs 6
21 DQ7 Data Inputs/Outputs 7
22CS’Chip Select Pin
23A10Address Pin 10
24OE’Output Enable Pin
25A11 Address Pin 11
26A9Address Pin 9
27A8Address Pin 8
28A13Address Pin 13
29WE’Write Enable Pin
30CS 2 Chip Select Pin 2
31A15 Address Pin 15
32VCCPower Supply Pin

628128 Key Feature

  • High speed accass time
    • 70 70ns (Max.)
  • Input levels are CMOS-compatible
  • Automatic power down when chip is deselect
  • Three state outputs
  • Fully static operation
  • Data retention supply voltage as low as 1.5V
  • Easy expansion with CE2, CE1, and OE optie
  • All /O pins are 5V tolerant

You can download this datasheet for 628128 128Kx8 70ns Low-Power CMOS RAM – Datasheet from the link given below: