State Flow

PowerUp:

ReadEEPROM

andconfigure

Write

Word0

Write

Word1

Write

Word2

Write

Word3

Write

Word4

Write

Word5

State4:

Programming

EEPROM

Locking

State2:

Programming

Mode

State5:

Readback

Mode

State1:Idle

Normal

Operation

State3:

Programming

EEPROM

NoLocking

11thBit

Written

11thBit

Written

11thBit

Written

11thBit

Written

11thBit

Written

11thBit

Written

SDATA=

11100000000

SDATA=

11111110000

SDATA=

11101010101

SDATA=

010xxxxxxxx

SDATA=

11111111111

SDATA=

11100000000

SDATA=001100

SDATA=111011

60thClock

Applied

Power-Up

Reset

Completed

SDATA=

101xxxxxxxx

SDATA=

001xxxxxxxx

SDATA=

110xxxxxxxx

SDATA=

100xxxxxxxx

SDATA=

000xxxxxxxx

CDCE421A

www.ti.com..................................................................................................................................................................................................... SCAS873 – APRIL 2009

(1)

In States 2, 3, 4, and 5, the signal pin CE is disregarded and has no influence on power down.

State Flow Diagram of Single Pin Interface

Copyright © 2009, Texas Instruments Incorporated

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