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 No | Pin Name | Description |
---|---|---|
1 | NC | Address Pin 14 |
2 | A16 | Address Pin 16 |
3 | A14 | Address Pin 14 |
4 | A12 | Address Pin 12 |
5 | A7 | Address Pin 7 |
6 | A6 | Address Pin 6 |
7 | A5 | Address Pin 5 |
8 | A4 | Address Pin 4 |
9 | A3 | Address Pin 3 |
10 | A2 | Address Pin 2 |
11 | A1 | Address Pin 1 |
12 | A0 | Address Pin 0 |
13 | DQ0 | Data Inputs/Outputs 0 |
14 | DQ1 | Data Inputs/Outputs 1 |
15 | DQ2 | Data Inputs/Outputs 2 |
16 | VSS | Ground Pin |
17 | DQ3 | Data Inputs/Outputs 3 |
18 | DQ4 | Data Inputs/Outputs 4 |
19 | DQ5 | Data Inputs/Outputs 5 |
20 | DQ6 | Data Inputs/Outputs 6 |
21 | DQ7 | Data Inputs/Outputs 7 |
22 | CS’ | Chip Select Pin |
23 | A10 | Address Pin 10 |
24 | OE’ | Output Enable Pin |
25 | A11 | Address Pin 11 |
26 | A9 | Address Pin 9 |
27 | A8 | Address Pin 8 |
28 | A13 | Address Pin 13 |
29 | WE’ | Write Enable Pin |
30 | CS 2 | Chip Select Pin 2 |
31 | A15 | Address Pin 15 |
32 | VCC | Power 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: