S-93A46BD0A-A8T1U3 datasheet(11/39 Pages) SII

Part #	S-93A46BD0A-A8T1U3

Description	Function to protect against write due to erroneous instruction recognition

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Manufacturer	SII [Seiko Instruments Inc]

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FOR AUTOMOTIVE 125°C OPERATION 3-WIRE SERIAL E2PROM

Rev.1.2_00

S-93A46B/56B/66B/76B/86B

11



Instruction Sets

1. S-93A46B

Table 11

Instruction

Start Bit

Operation

Code

Address

Data

SK input clock

1

2

3

4

5

6

7

8

9

10 to 25

READ (Data read)

1

0

A5

A4

A3

A2

A1

A0

D15 to D0 output

*1

WRITE (Data write)

1

0

1

A5

A4

A3

A2

A1

A0

D15 to D0 input

ERASE (Data erase)

1

A5

A4

A3

A2

A1

A0

−

WRAL (Chip write)

1

0

1

x

D15 to D0 input

ERAL (Chip erase)

1

0

1

0

x

−

EWEN (Write enable)

1

0

1

x

−

EWDS (Write disable)

1

0

x

−

*1. When the 16-bit data in the specified address has been output, the data in the next address is output.

Remark x = Don't care.

2. S-93A56B

Table 12

Instruction

Start Bit

Operation

Code

Address

Data

SK input clock

1

2

3

4

5

6

7

8

9

10

11

12 to 27

READ (Data read)

1

0

x

A6

A5

A4

A3

A2

A1

A0

D15 to D0 output

*1

WRITE (Data write)

1

0

1

x

A6

A5

A4

A3

A2

A1

A0

D15 to D0 input

ERASE (Data erase)

1

x

A6

A5

A4

A3

A2

A1

A0

−

WRAL (Chip write)

1

0

1

x

D15 to D0 input

ERAL (Chip erase)

1

0

1

0

x

−

EWEN (Write enable)

1

0

1

x

−

EWDS (Write disable)

1

0

x

−

*1. When the 16-bit data in the specified address has been output, the data in the next address is output.

Remark x = Don't care.

3. S-93A66B

Table 13

Instruction

Start Bit

Operation

Code

Address

Data

SK input clock

1

2

3

4

5

6

7

8

9

10

11

12 to 27

READ (Data read)

1

0

A7

A6

A5

A4

A3

A2

A1

A0

D15 to D0 output

*1

WRITE (Data write)

1

0

1

A7

A6

A5

A4

A3

A2

A1

A0

D15 to D0 input

ERASE (Data erase)

1

A7

A6

A5

A4

A3

A2

A1

A0

−

WRAL (Chip write)

1

0

1

x

D15 to D0 input

ERAL (Chip erase)

1

0

1

0

x

−

EWEN (Write enable)

1

0

1

x

−

EWDS (Write disable)

1

0

x

−

*1. When the 16-bit data in the specified address has been output, the data in the next address is output.

Remark x = Don't care.

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