AC ELECTRICAL CHARACTERISTICS (Continued)
Figure 9. Read Access of Control Registers
SERCON410B
3.4.5 Read Access of Control Registers
Symbol
Parameter
Value
Unit
Min.
Type
Max.
Setup time A6-0, BHEN, PCSN0, PCS1,
DMAACKNR, WRN (only Motorola mode) to
tASU
falling edge RDN (Intel or Motorola mode
0
ns
with low active strobe) or rising edge RDN
(Motorola mode with high active strobe)
Hold time A10-0, BHEN, MCSN0-1, WRN
(only Motorola mode) to rising edge RDN
tAHD
(Intel Motorola mode with low active strobe)
0
ns
or falling edge RDN (Motorola mode with high
active strobe)
Access time A6-0, BHEN, PCSN0, PCS1,
tPAD
DMAACKNR, WRN (only Motorola mode) to
D15-0 valid
50
ns
tPRDD
Access time RDN to D15-0 valid
40
ns
tRDZ
Delay RDN to D15-0 high-Z
tPRQ
Delay RDN to DMAREQR low
15
ns
30
ns
13/30
®