AC ELECTRICAL CHARACTERISTICS (Continued)
Figure 11. Write Access to Control Registers
SERCON410B
3.4.7 Write Access to Control Registers
Symbol
Parameter
Value
Unit
Min.
Type
Max.
Setup time A6-0, BHEN, PCSN0, PCS1,
DMAACKNT, WRN (only Motorola mode) to
tASU
falling edge WRN (Intel mode) or RDN
(Motorola mode, strobe active low) or rising
0
ns
edge RDN (Motorola mode, strobe active
high)
Hold time A6-0, BHEN, PCSN0, PCS1,
DMAACKNT, WRN (only Motorola mode) to
tAHD
rising edge WRN (Intel mode) or RDN
(Motorola mode, strobeactive low) or falling
0
ns
edge RDN (Motorola mode, strobe active
high)
tPWRW
Pulse width WRN (Intel mode) or RDN
(Motorola mode)
30
ns
tDSU
Setup time D15-0 to end of write access
10
ns
tDHD
Hold time D15-0 to end of write access
10
tPRQ
Delay WRN or RDN to DMAREQT low
ns
30
ns
15/30
®