GMSK Packet Data Modem
CMX909B
For the following conditions unless otherwise specified:
Xtal Frequency = 4.096MHz, V = 3.0V to 5.5V, Tamb = -40°C to +85°C.
DD
Notes
Min.
Typ.
Max.
Units
mC Parallel Interface Timings (ref. Figure 20)
t
Address valid to CSN low time
Address hold time
0
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ns
ACSL
T
-
ns
AH
t
CSN hold time
0
-
ns
CSH
T
T
T
CSN high time
12
6
-
clock cycles
CSHI
CSRWL
DHR
CSN to WRN or RDN low time
Read data hold time
0
-
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
0
-
t
t
t
t
t
t
t
Write data hold time
0
-
DHW
DSW
RHCSL
RACL
RARL
RL
Write data setup time
90
0
-
RDN high to CSN low time (write)
Read access time from CSN low
Read access time from RDN low
RDN low time
-
175
145
-
11
11
-
-
200
-
RDN high to D0-D7 3-state time
WRN high to CSN low time (read)
WRN low time
50
-
RX
t
0
WHCSL
WL
t
200
-
Notes:
11. With 30pF max to V on D0 - D7 pins.
SS
12. Xtal/Clock cycles at the XTAL/CLOCK pin.
ã 2001 Consumer Microcircuits Limited
46
D/909B/1
CMLMICRO [ CML MICROCIRCUITS ]
