ASAHI KASEI

[AK6512CA]

DAP03E-00

2005/03

- 5 -

Function Description

AK6512CA has six instructions.

The instruction can be input after the CS pin changes high to low.

All the instructions are MSB first.

Instruction

Op-code

Address

Data

Description

READ

0000 X011

X X X A12-A8

A7-A0

D7-D0 (out)

Read from Memory Array

WRITE

0000 X010

X X X A12-A8

A7-A0

D7-D0 (in)

Write to Memory Array

WREN

0000 X110

------

------

Write Enable

WRDI

0000 X100

------

------

Write Disable

RDSR

0000 X101

Bit7-Bit0 (out)

------

------

Read Status Register

WRSR

0000 X001

Bit7-Bit0 (in)

------

------

Write Status Register

X: don’t care

Table 1. Instruction set for AK6512CA

WREN (WRITE ENABLE) / WRDI (WRITE DISABLE)

The WRITE function can be accepted only in the status of Write Enable. After VCC is applied,

AK6512CA is in the status of Write Disable.

After the function of WRDI, AK6512CA cannot accept

any programming function.

WREN

WRDI

01234567

1

X

0

0

0

00

0

Hi-Z

CS

SCK

SI

SO

X = don’t care

01234567

1

X

0

0

0

01

0

Hi-Z

CS

SCK

SI

SO

X = don’t care