ML22Q623 datasheet(4/118 Pages) ROHM

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FEDL22Q62X-02

ML22Q62X

■ Pin Description

Symbol

I/O

Attribute

Description

Initial

value

1,18

DGND

Digital ground pin.

—

TEST1

Output pin for testing.

Leave open.

Hi-Z

CSB

Negative

Synchronous serial interface chip select pin.

The SCK and SI inputs are accepted only when this pin is at the "L"

level.

SCK

Synchronous serial interface clock input pin.

Synchronous serial interface data input pin.

Data is fetched in synchronization with SCK.

Synchronous serial interface data output pin.

When the CSB pin is at an "L" level, data is output in synchronization

with SCK.

When the CSB pin is at an "H" level, this pin enters a high-impedance

state.

Hi-Z

IRCSB

Negative

Flash memory interface chip select input pin.

Input the "H" level during non-access and the "L" level during access.

Setting the IRON pin to "H" enables input.

IRSCK

Flash memory interface serial clock input pin.

Setting the IRON pin to "H" enables input.

IRSO

Flash memory interface serial data output pin.

Setting the IRON pin to "H" enables output.

Hi-Z

IRSI

Flash memory interface serial data input pin.

Setting the IRON pin to "H" enables input.

IRON

Positive

Pin to enable the flash memory interface.

When this bit is set to "L", the flash memory interface pin is disabled. A

pull-down resistor is internally connected to the LSI.

Set this bit to "L" during playback operation using flash memory.

Setting this bit to "H" allows rewriting of the flash memory using the

flash memory interface.

Set this bit to "H" for onboard rewriting.

*1 Initial value at reset input and power-down. The pin whose IO is "I" indicates a fixed level from outside.

*2 IRON pin "L" setting status

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