UPD30121 NEC [NEC], UPD30121 Datasheet - Page 42

• Manufacturer Part Number: UPD30121
• Description: VR4121TM 64-/32-BIT MICROPROCESSOR
• Manufacturer: NEC [NEC]

42
UCAS#/LCAS#
MRAS (0:3)#
(6) EDO-type DRAM write parameter (2/2)
Notes 1. In 32-bit mode: Applied to MRAS (0:1)# pins
ADD (19:23)
ADD (9:18)
DATA
2. In 32-bit mode: Applied to UUCAS#/MRAS3#, ULCAS#MRAS2#, UCAS#, and LCAS# pins
3. In 32-bit mode: Applied to DATA (16:31)/GPIO (16:31) and DATA (0:15) pins
(output)
(output)
(output)
(output)
(output)
WR#
In 16-bit mode: Applied to UUCAS#/MRAS3#, ULCAS#/MRAS2#, and MRAS (0:1)# pins
In 16-bit mode: Applied to UCAS# and LCAS# pins
In 16-bit mode: Applied to DATA (0:15) pins
(I/O)
Note 1
Note 2
Note 3
t
ASR
Invalid
t
t
RAD
RAH
Data Sheet U14691EJ1V0DS00
t
RCD
t
CSH
t
WCS
t
ASC
t
D1
t
RASP
t
t
HCAS
CAH1
t
D2
t
HPC
t
t
CP
D1
t
t
WCH
D2
t
t
t
CAH2
RHCP
RAL
t
t
CAH3
RSH
t
RP
PD30121