628128 128Kx8 70ns Low-Power CMOS RAM

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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.

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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