M93S46-BN3 查看數據表（PDF） - STMicroelectronics

零件编号

产品描述 (功能)

生产厂家

M93S46-BN3

4Kbit, 2Kbit and 1Kbit (16-bit wide) MICROWIRE Serial Access EEPROM with Block Protection

STMicroelectronics 

M93S66, M93S56, M93S46

Table 3. Instruction Set for the M93S66, M93S56

Instruction Description

W

PRE

Start

bit

Op-

Code

Address1,2

Data

Required

Clock

Cycles

Additional

Comments

READ

Read Data

from Memory

X

0

1

10

A7-A0 Q15-Q0

Write is executed if

WRITE

Write Data to

Memory

1

0

1

01

A7-A0 D15-D0

27

the address is not

inside the

Protected area

PAWRITE

Page Write to

Memory

1

0

1

11

A7-A0

Nx

D15-D0

11 + N x 16

Write is executed if

all the N

addresses are not

inside the

Protected area

WRAL

Write All

Memory

with same

Data

Write all data if the

10

1

00 01XXXXXX D15-D0

27

Protection

Register is cleared

WEN

Write Enable 1 0

1

00 11XXXXXX

11

WDS

Write Disable X 0

1

00 00XXXXXX

11

PRREAD

Protection

Register Read

X

1

1

10

XXXXXXXX

Q7-Q0

+ Flag

Data Output =

Protection

Register content +

Protection Flag bit

PRWRITE

Protection

Register Write

1

1

1

01

A7-A0

Data above

11

specified address

A7-A0 are

protected

PRCLEAR

Protection

Register Clear

1

1

1

11 11111111

Protect Flag is also

11

cleared (cleared

Flag = 1)

Protection

PREN

Register

11

1

00 11XXXXXX

11

Enable

PRDS

Protection

Register

Disable

11

1

00 00000000

11

OTP bit is set

permanently

Note: 1. X = Don’t Care bit.

2. Address bit A7 is not decoded by the M93S56.

7/34

Share Link: