SERCON410B Datasheet, PDF (18/34 Pages) STMicroelectronics – SERCOS INTERFACE CONTROLLER

SERCON410B
AC ELECTRICAL CHARACTERISTICS (Continued)
Figure 10. Read Access of Dual Port RAM
3.4.6 Read Access of Dual Port RAM
Symbol
Parameter
tASU
tAHD
tMRDD
t_MBSY
tMBHD
tRDZ
tRD1
Setup time A10-0, BHEN, MCSN0-1, WRN
(only Motorola mode) to falling edge RDN
(Intel or Motorola mode 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
(Intel Motorola mode with low active strobe)
or falling edge RDN (Motorola mode with high
active strobe)
Access time RDN to D15-0 valid
Delay RDN to BUSYN low
Delay BUSYN high to D15-0 valid
Delay RDN to D15-0 high-Z
RDN and WRN high after end of read access
Min.
0
0
30
Value
Type
Max.
60
35
30
15
Unit
ns
ns
ns
ns
ns
ns
ns
14/30
®