CAT24C44 データシートの表示（PDF） - Catalyst Semiconductor => Onsemi

部品番号

コンポーネント説明

メーカー

CAT24C44

256-Bit Serial Nonvolatile CMOS Static RAM

Catalyst Semiconductor => Onsemi 

CAT24C44

BLOCK DIAGRAM

ROW

DECODE

EEPROM ARRAY

STATIC RAM

ARRAY

256-BIT

RECALL

STORE

CE

DI

INSTRUCTION

REGISTER

COLUMN

DECODE

SK

INSTRUCTION

DECODE

4-BIT

COUNTER

CONTROL

LOGIC

STORE

RECALL

DO

VCC

VSS

MODE SELECTION(1)(2)

Mode

Hardware Recall(3)

Software Recall

Hardware Store(3)

Software Store

X = Don’t Care

STORE

1

1

0

1

RECALL

0

1

1

1

POWER-UP TIMING(4)

Symbol

Parameter

VCCSR

VCC Slew Rate

tpur

Power-Up to Read Operations

tpuw

Power-Up to Write or Store Operation

Software

Instruction

NOP

RCL

NOP

STO

Write Enable Previous Recall

Latch

Latch

X

X

X

X

SET

TRUE

SET

TRUE

Min.

0.5

Max.

0.005

200

5

Units

V/m

µs

ms

Note:

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

(2) The store operation is inhibited when VCC is below ≈ 3.5V.

(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.

Doc. No. 1083, Rev. R

2

© 2005 by Catalyst Semiconductor, Inc.

Characteristics subject to change without notice

Share Link: