UPD30121 NEC [NEC], UPD30121 Datasheet - Page 40

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

40
UCAS#/LCAS#
(5) EDO-type DRAM read parameter (2/2)
Notes 1. In 32-bit mode: Applied to MRAS (0:1)# pins
Remark The broken lines indicate high impedance.
MRAS (0:3)#
ADD (19:23)
ADD (9:18)
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
DATA
(output)
(output)
(output)
(output)
(output)
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
RD#
(I/O)
Note 1
Note 2
Note 3
Invalid
t
ASR
t
t
RAD
RAH
Data Sheet U14691EJ1V0DS00
t
RCD
t
CSH
t
ASC
t
RASP
t
OEA
t
t
HCAS
CAH1
t
HPC
t
t
RAC
t
CAC
AA
t
t
DS1
CP
t
DH1
t
ACP
t
t
CAH2
t
t
RAL
DS2
RHCP
t
RSH
t
CAH3
t
DH2
Invalid
t
RP
PD30121