CAT22C10

2

Doc. No. 25018-0A 2/98 N-1

Input

Mode

CS

CS

CS

CS

CS

WE

WE

WE

WE

WE

RECALL

RECALL

RECALL

RECALL

RECALL

STORE

STORE

STORE

STORE

STORE

I/O

Standby

H

X

H

H

Output High-Z

RAM Read

L

H

H

H

Output Data

RAM Write

L

L

H

H

Input Data

→RAM)

X

H

L

H

Output High-Z RECALL

→RAM)

H

X

L

H

Output High-Z RECALL

(RAM

X

H

H

L

Output High-Z STORE

(RAM

H

X

H

L

Output High-Z STORE

BLOCK DIAGRAM

Symbol

Parameter

Min.

Max.

Units

VCCSR

0.5

0.005

V/ms

Note:

(1)

RECALL signal has priority over STORE signal when both are applied at the same time.

(2)

STORE is inhibited when RECALL is active.

(4) This parameter is tested initially and after a design or process change that affects the parameter.

ROW

SELECT

COLUMN SELECT

CONTROL

LOGIC

READ/WRITE

CIRCUITS

RECALL

E

STORE

A0

A1

A2

A3

A4

A5

STORE

RECALL

CS

WE

I/O0 I/O1 I/O2 I/O3

STATIC RAM

ARRAY

5153 FHD F02