2

CAT24C44

Doc. No. MD-1083, Rev. T

© 2008 SCILLC. All rights reserved.

Characteristics subject to change without notice

Symbol

Parameter

Min.

Max.

Units

VCCSR

0.5

0.005

V/m

Power-Up to Read Operations

200

µs

Power-Up to Write or Store Operation

5

ms

Software

Write Enable

Previous Recall

Mode

STORE

STORE

STORE

STORE

STORE

RECALL

RECALL

RECALL

RECALL

RECALL

Instruction

Latch

Latch

1

0

NOP

X

X

Software Recall

1

1

RCL

X

X

0

1

NOP

SET

TRUE

Software Store

1

1

STO

SET

TRUE

X = Don’t Care

BLOCK DIAGRAM

ROW

DECODE

INSTRUCTION

REGISTER

COLUMN

DECODE

EEPROM ARRAY

STORE

RECALL

STATIC RAM

ARRAY

256-BIT

STORE

RECALL

CE

DI

SK

INSTRUCTION

DECODE

4-BIT

COUNTER

CONTROL

LOGIC

VCC

VSS

DO

Note:

(1) The store operation has priority over all the other operations.

(3) NOP designates that the device is not currently executing an instruction.

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