S-7760A53XX-HCT1 datasheet(27/53 Pages) SII

Part #	S-7760A53XX-HCT1

Description	PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)

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Manufacturer	SII [Seiko Instruments Inc]

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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)

Rev.1.3_00

S-7760A

Seiko Instruments Inc.

27

2. Read/Write in E

2PROM

The example of flowchart for software when accessing to the E

2PROM is shown in Figure 30.

START

Switching access to

E

2PROM/register

1-byte command

(ST, DC2 to 0, 0001, 1, ACK, SP)

*1

Access to

control port E

2PROM

2-byte command

• Write

(ST, DC2 to 0, 0101, 0, ACK, CTR7 to 0, ACK, SP)

*1

• Read

(ST, DC2 to 0, 0101, 1, ACK, CTR7 to 0, ACK, SP)

*1

END

WP pin = “L”?

Yes

No

*1. ST

: Start condition

DC2 to 0

: Device code

ACK

: Acknowledgment

CTR7 to 0 : Control port register

SP

: Stop condition

Figure 30 Flowchart for Software Example 2

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S-7760A53XX-HCT1 Datasheet(PDF) 27 Page - Seiko Instruments Inc

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