FX929A Datasheet, PDF (41/44 Pages) CML Microcircuits – 4-Level FSK Modem Data Pump

4-Level FSK Modem Data Pump
FX929A
µC Parallel Interface Timings (ref. Figure 21)
t_ACSL
Address valid to CSN low time
t_AH
Address hold time
t_CSH
CSN hold time
t_CSHI
CSN high time
t_CSRWL CSN to WRN or RDN low time
t_DHR
Read data hold time
t_DHW
Write data hold time
t_DSW
Write data setup time
t_RHCSL RDN high to CSN low time (write)
t_RACL
Read access time from CSN low
t_RARL
Read access time from RDN low
t_RL
RDN low time
t_RX
RDN high to D0-D7 3-state time
t_WHCSL WRN high to CSN low time (read)
t_WL
WRN low time
Notes Min.
0
0
0
10
6
0
0
0
90
0
11
11
200
0
200
Typ. Max.
Units
ns
ns
ns
clock cycles
ns
ns
ns
ns
ns
175
ns
145
ns
ns
50
ns
ns
ns
Notes:
10. Xtal/Clock cycles at the XTAL/CLOCK pin.
11. With 30pF max to V_SS on D0 - D7 pins.
Figure 21 µC Parallel Interface Timings
© 1996 Consumer Microcircuits Limited
41
D/929A/4