FX949 Datasheet, PDF (22/25 Pages) CML Microcircuits – CDPD Wireless Modem Data Pump

CDPD Wireless Modem Data Pump
FX949
For the following conditions unless otherwise specified:
Xtal Frequency = 4.9152MHz, V_DD = 3.3V to 5.0V, Tamb = -40°C to +85°C.
µP Interface Timings (ref. Fig. 7)
t_ACSL
t_AH
t_CSH
Address valid to CSN low time
Address hold time
CSN hold time
t_CSHI
t_CSRWL
t_DHR
t_DHW
CSN high time
CSN to WRN or RDN low time
Read data hold time
Write data hold time
t_DSW
t_RHCSL
t_RACL
t_RARL
t_RL
Write data setup time
RDN high to CSN low time (write)
Read access time from CSN low
Read access time from RDN low
RDN low time
t_RX
t_WHCSL
t_WL
RDN high to D0 - D7 3-state time
WRN high to CSN low time (read)
WRN low time
Notes Min. Typ.
0
10
0
6
0
0
0
90
0
11
11
200
0
200
Max.
Units
ns
ns
ns
clock cycles
ns
ns
ns
ns
ns
175
ns
145
ns
ns
50
ns
ns
ns
Notes: 11. With 30pF max. to V_SS on D0 - D7 pins.
© 1996 Consumer Microcircuits Limited
22
D/949/5