UPD77111 NEC, UPD77111 Datasheet - Page 48

• Manufacturer Part Number: UPD77111
• Description: 16-BIT FIXED-POINT DIGITAL SIGNAL PROCESSORS
• Manufacturer: NEC

Bus arbitration timing (when bus is idle)
Bus arbitration timing (when bus is busy)
48
X/Y, DA0 - DA14,
X/Y, DA0 - DA14,
PD77110
MRD, MWR
MRD, MWR
HOLDRQ
HOLDAK
HOLDRQ
HOLDAK
CLKIN
BSTB
CLKIN
BSTB
(Bus busy)
(Bus busy)
t
hBS
t
t
suHRQ
suHRQ
Bus idle
Bus busy
Data Sheet U12801EJ4V0DS00
t
t
dBS
dHAK
t
hBS
t
h (BS-D)
Bus idle
Bus release
t
hHRQ
t
dBS
Bus release
t
t
dHAK
h (BS-D)
t
Hi-Z
hHRQ
PD77110, 77111, 77112
Hi-Z
t
suHRQ
Bus idle
t
suHRQ
Bus idle
t
dHAK
t
dHAK
(Bus busy)
(Bus busy)
t
v (BS-D)
t
v (BS-D)
t
hHRQ
t
hHRQ