UPD30121 NEC [NEC], UPD30121 Datasheet - Page 55

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

Remark The broken lines indicate high impedance.
(13) System bus parameter (ZWS#) (2/2)
Notes 1. This indicates that there are four possible relationships between BUSCLK signal and other system
MEMR#/MEMW#,
When WISAA (0:2) bits = 101, BSEL bit = 0
2. This indicates the minimum setup time to the BUSCLK signal rising or falling edge.
BUSCLK
BUSCLK
BUSCLK
BUSCLK
ADD (19:25),
MEMCS16#,
bus interface signals.
IOR#/IOW#
ADD (9:18)
IOCHRDY
ADD (0:8)
IOCS16#
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(output)
(input)
(input)
(input)
(input)
ZWS#
DATA
DATA
SHB#
Note 1
Note 1
Note 1
Note 1
Invalid
Invalid
Data Sheet U14691EJ1V0DS00
t
AVCK
Note 2
t
AVCL
t
AVSV2
t
DVCL
t
CLCK
t
CLZL
Note 2
t
CLCH
t
DS
t
t
t
CHAV
CHZH
DH
t
t
t
CHSV
CHCL
CHDV
Invalid
PD30121
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