M66222FP Ver la hoja de datos (PDF) - MITSUBISHI ELECTRIC

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M66222FP

128 × 8-BIT × 2 MAIL-BOX

MITSUBISHI ELECTRIC  

MITSUBISHI 〈DIGITAL ASSP〉

M66222SP/FP

Write Cycle

Write cycle No.1 (WE control) See Notes 6, 7 and 8.

tCW

A0~A7

tsu(CS)

CS

tsu(A-WEH)

OE

WE

I/O0~I/O7

(DIN)

I/O0~I/O7

(DOUT)

tsu(A)1

tw(WE)

trec(WE)

tsu(D)

th(D)

tdis(WE)

tdis(OE)

Data input determined

ten(OE)

ten(WE)

Write cycle No.2 (CS control) See Notes 7 and 8.

A0~A7

CS

tsu(A)2

tCW

tsu(CS)

trec(WE)

128 × 8-BIT × 2 MAIL-BOX

WE

I/O0~I/O7

(DIN)

tsu(D)

th(D)

Data input determined

Notes 6: The WE of the port must be set to “H” when an address input changes.

7: A write operation is performed during the overlap period when both CS and WE are “L”.

8: Do not apply any negative-phase signal from outside when an I/O pin is in output state.

9: The shaded part means a state in which a signal can be “H” or “L”.

7

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