S-7750C73XX-HCT1 datasheet(11/44 Pages) SII

Part #	S-7750C73XX-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.1.1_00

S-7750C

Seiko Instruments Inc.

11

Configuration of Command

If setting

C

TA /

, the bit for timer address setting / command switch, in “0”, address / command (C2, C1, C0) is

recognized as command. There are 8 types of command, and Read / Write in each register is done by them. If setting

the bit for timer address setting / command switch

)

C

(TA /

in “1”, the S-7750C recognizes this command as timer setting

for DO0 to DO7.

Table 11 List of Command

Data

Command

C

TA /

C2

C1

C0

W

/

R

B7

B6

B5

B4

B3

B2

B1

B0

Reload (

W

/

R

fixed to 0)

0

W

－*1

Switching access to register / E

2PROM

0

1

0 / 1

*2

－*1

Timer enable register

0

1

0

W

TEN7 TEN6 TEN5 TEN4 TEN3 TEN2 TEN1 TEN0

Do not use (Do not access)

0

1

－

Free area 1

*3

0

1

0

W

/

R

F17

F16

F15

F14

F13

F12

F11

F10

Control port

*3

0

1

0

1

W

/

R

CTR7 CTR6 CTR5 CTR4 CTR3 CTR2 CTR1 CTR0

Timer scale setting

*3

0

1

0

W

/

R

TS7

TS6

TS5

TS4

TS3

TS2

TS1

TS0

Free area 2

*3

0

1

W

/

R

F27

F26

F25

F24

F23

F22

F21

F20

Timer setting for DO0

*3

1

0

W

/

R

8

×T

7

×T

6

×T

5

×T

4

×T

3

×T

2

×T

1

×T

Timer setting for DO1

*3

1

0

1

W

/

R

8

×T

7

×T

6

×T

5

×T

4

×T

3

×T

2

×T

1

×T

Timer setting for DO2

*3

1

0

1

0

W

/

R

8

×T

7

×T

6

×T

5

×T

4

×T

3

×T

2

×T

1

×T

Timer setting for DO3

*3

1

0

1

W

/

R

8

×T

7

×T

6

×T

5

×T

4

×T

3

×T

2

×T

1

×T

Timer setting for DO4

*3

1

0

W

/

R

8

×T

7

×T

6

×T

5

×T

4

×T

3

×T

2

×T

1

×T

Timer setting for DO5

*3

1

0

1

W

/

R

8

×T

7

×T

6

×T

5

×T

4

×T

3

×T

2

×T

1

×T

Timer setting for DO6

*3

1

0

W

/

R

8

×T

7

×T

6

×T

5

×T

4

×T

3

×T

2

×T

1

×T

Timer setting for DO7

*3

1

W

/

R

8

×T

7

×T

6

×T

5

×T

4

×T

3

×T

2

×T

1

×T

*1.

By inputting dummy data, the master device sends data in 18-bit during transmission. However, the S-7750C executes

the command when it has loaded 9-bit. Regarding acknowledgment, refer to “ Operation 4. Acknowledgment”.

*2.

W

/

R

= “0”; register access mode,

W

/

R

= “1”; E

2PROM access mode

*3.

To switch access to register / E

2PROM, use the “Switching access to register / E2PROM” command. When rewriting the

E

2PROM, the register is rewritten simultaneously.

Register and E2PROM

In the S-7750C, the register and the E

2PROM correspond each other. The S-7750C maintains the default value for control

despite power-off due to the included E

2PROM. The data in the register is installed in the E2PROM by using the reload

command. And the data in the E

2PROM is automatically installed into the register when power-on and the lower power

supply voltage is applied. Restoring the default value for control is possible any time due to these functions.

These 12 commands have the configuration in which the register and E

2PROM correspond.

・

Free area 1, 2

・

Control port

・

Setting for timer scale

・

Timer setting for DO7 to DO0

Users are able to switch access between corresponding register and E

2PROM by the “Switching access to register /

E

2PROM” command. Immediately after power-on, the S-7750C is in the “register access mode”. In this register access

mode, only the register is rewritten, the E

2PROM maintains the prior data. But in the “E2PROM access mode”, data both in

the register and the E

2PROM is rewritten. In data Read, access mode data which is being selected by user; is read.

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