UPD30121 datasheet(49/76 Pages) NEC

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Data Sheet U14691EJ1V0DS00

µµµµPD30121

(10) Flash memory mode write parameter

Parameter

Symbol

Condition

MIN.

MAX.

Unit

Write cycle time

tAVAV

150

Address setup time (to WR#

↑)tAVWH

Address setup time (to ROMCS (0:3)#

↓)tAVEL

0ns

ROMCS (0:3)# setup time (to WR#

↓)tELWL

WR# low-level width

tWLWH

ROMCS (0:3)# hold time (from WR#

↑)tWHEH

Address hold time (from WR#

↑)tWHAX

WR# high-level width

tWHWL

Address setup time (to WR#

↓)tAVWL

Data output setup time (to WR#

↑)tDVWH

Data output hold time (from WR#

↑)tWHDX

ROMCS (0:3)#

(output)

WR#

(output)

Invalid

ADD (19:23),

ADD (0:8)

(output)

ADD (9:18)

(output)

tAVEL

tAVWL

tWHWL

tWLWH

tAVWH

tAVAV

tDVWH

tWHDX

tELWL

tWHEH

tWHAX

DATA

(I/O)

Note

Note In 32-bit mode: Applied to DATA (16:31)/GPIO (16:31) and DATA (0:15) pins

In 16-bit mode: Applied to DATA (0:15) pins

UPD30121 Datasheet(PDF) 49 Page - NEC

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