UPD98405 Datasheet, PDF (42/64 Pages) NEC – 155M ATM INTEGRATED SAR CONTROLLER

µPD98405
Expansion ROM interface
Parameter
ROMOE_B ↓→ ROMD valid time
ROMCS_B ↓→ ROMD valid time
ROMA valid time → ROMD valid
time
ROMOE_B ↑→ ROMD float time
ROMCS_B ↑→ ROMD float time
ROMA invalid time → ROMD hold
time
Symbol
tDROMOE
tDROMCS
tROMACC
Condition
ROMCS_B = VOL, ROMA valid
ROMOE_B = VOL, ROMA valid
ROMCS_B = ROMOE_B = VOL
MIN.
tHROMOE ROMCS_B = VOL, ROMA valid
0
tHROMCS ROMOE_B = VOL, ROMA valid
0
tHROMA ROMCS_B = ROMOE_B = VOL
0
TYP.
MAX. Unit
200
ns
200
ns
200
ns
ns
ns
ns
Expansion ROM interface
ROMCS_B
ROMOE_B
ROMA15-
ROMA0
ROMD7-
ROMD0
tDROMOE
tDROMCS
tROMACC
tHROMA
tHROMOE
tHROMCS
42
Data Sheet S12689EJ2V0DS00