UPD30121 NEC [NEC], UPD30121 Datasheet - Page 63

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

Remark The broken lines indicate high impedance.
Remark The broken lines indicate high impedance.
(17) Bus hold parameter (2/2)
Notes 1. UUCAS#/MRAS3#, ULCAS#/MRAS2#, MRAS (0:1)#, UCAS#, LCAS# pins
Notes 1. In 32-bit mode: MRAS (0:1)# pins
(a) Bus hold in Fullspeed/Standby mode
(b) Bus hold in Suspend mode
HLDACK#
2. SHB#, IOR#, IOW#, MEMR#, MEMW#, RD#, WR#, ADD (0:24), ADD25/SCLK, and DATA (0:15)
2. In 32-bit mode: UUCAS#/MRAS3#, ULCAS#/MRAS2#, UCAS#, LCAS# pins
3. SHB#, IOR#, IOW#, MEMR#, MEMW#, RD#, WR#, ADD (0:24), ADD25/SCLK, and DATA (0:15)
HLDRQ#
BUSCLK
HLDACK#
(output)
(output)
HLDRQ#
BUSCLK
Note 1
Note 2
Note 3
(input)
(output)
(output)
pins, and DATA (16:31)/GPIO (16:31) pin in 32-bit mode
In 16-bit mode: UUCAS#/MRAS3#, ULCAS#/MRAS2#, MRAS (0:1)# pins
In 16-bit mode: UCAS#, LCAS# pins
pins, and DATA (16:31)/GPIO (16:31) pins in 32-bit mode
Note 1
Note 2
(input)
H
t
RPS
Data Sheet U14691EJ1V0DS00
t
t
SOFF
SHP
t
FHP
t
FOFF
t
SON
t
FON
t
RPS
t
CSR
PD30121
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