ISDN Data and Telephony Protocol Engine (inc. X.25)
CMX228
1.7.1.3 Operating Characteristics
Details in this section represent design target values and are not currently guaranteed.
For the following conditions unless otherwise specified:
Xtal Frequency = 32MHz ± 100ppm, AVDD = DVDD0 = DVDD1 = 3.0V to 5.0V, Tamb = - 40°C to +85°C.
Notes
Min.
Typ.
Max.
Units
DC Parameters
IDD (total, operational)
IDD (total in HALT mode)
IDD (total in IDLE mode)
1
1
1
25.0
13.0
-
45.0
26.0
12.0
mA
mA
mA
-
-
-
Digital Interface
Input logic "1" level
Input logic "0" level
Input leakage current (Vin = 0 to DVDD
Output logic "1" level (lOH = -2mA)
Output logic "0" level (lOL = 2mA)
70%
VDD
VDD
µA
V
mV
µA
-
-
-
-
-
-
-
30%
+10.0
-
400
10
-
)
-10.0
VDD -1.0
-
-
Input or Output leakage current (Vout = VDD
)
Xtal/Clock Input
2
2
10
125
125
ns
ns
ns
ns
ns
-
-
-
-
-
'High' pulse width (tWXH
)
10
'Low' pulse width (tWXL
Risetime (tXR)
)
2
10
-
2
10
-
Falltime (tXF)
2, 3
31.2468
31.2531
Period (tCYK
)
Notes:
1. Not including any current drawn by external circuitry.
2. Timing for an external input to the XTAL pin.
3. A fundamental cut crystal is recommended.
ã 1999 Consumer Microcircuits Limited
ã 1999 Chiron Technology Limited
33
D/228/1
CMLMICRO [ CML MICROCIRCUITS ]
