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STATE FLOW-DIAGRAM OF THE SINGLE-PIN INTERFACE

F0016-01

PowerUp:

Read

EEPROM

and

Configure

State1:

IDLE

Normal

Operation

State2:

Register

Programming

Mode

State3:

Program

EEPROM

NoLocking

State4:

Program

EEPROM

WithLocking

Write

Word2

Write

Word1

Write

Word0

State5:

Register

Read-Back

Mode

Power-UpReset

Completed

SDATA =

11111111

11

SDATA =

00000000

11

SDATA =

01010101

11

SDATA =

11110000

11

SDATA =

xxxxxxxx

01

SDATA =

xxxxxxxx

00

SDATA =

xxxxxxxx

10

SDATA =

00000000

11

SDATA =

001100

SDATA =

111011

30 Clock

Applied

th

10 Bit

Written

th

10 Bit

Written

th

10 Bit

Written

th

CDCE401

SCAS820 – JUNE 2006

NOTE: In states 2, 3, 4, and 5, the signal pin EN is disregarded and has no influence on power down.

5

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