UPD30121 Datasheet, PDF (49/76 Pages) NEC – VR4121TM 64-/32-BIT MICROPROCESSOR

(10) Flash memory mode write parameter
Parameter
Write cycle time
Address setup time (to WR# ↑)
Address setup time (to ROMCS (0:3)# ↓)
ROMCS (0:3)# setup time (to WR#↓)
WR# low-level width
ROMCS (0:3)# hold time (from WR# ↑)
Address hold time (from WR# ↑)
WR# high-level width
Address setup time (to WR# ↓)
Data output setup time (to WR# ↑)
Data output hold time (from WR# ↑)
Symbol
tAVAV
tAVWH
tAVEL
tELWL
tWLWH
tWHEH
tWHAX
tWHWL
tAVWL
tDVWH
tWHDX
ADD (19:23),
ADD (0:8)
(output)
ADD (9:18)
(output)
ROMCS (0:3)#
(output)
WR#
(output)
DATA ^Note
(I/O)
Invalid
tAVEL
tELWL
tAVWL
Condition
µPD30121
MIN.
MAX.
Unit
150
ns
75
ns
0
ns
10
ns
75
ns
10
ns
10
ns
75
ns
25
ns
75
ns
10
ns
tAVAV
tAVWH
tWLWH
tDVWH
tWHEH
tWHWL
tWHAX
tWHDX
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
Data Sheet U14691EJ1V0DS00
49