CG64xxAM Preliminary Data Sheet
3. Electrical Specifications
3.4.4
AC Digital Block Specifications
The following table lists guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V
and -40°C ≤ TA ≤ 85°C. Typical parameters apply to 5V at 25°C and are for design guidance only.
Table 3-12. AC Digital Block Specifications
Function
Description
Min
Typ
Max
24.84
Units
MHz
Notes
4.75V < Vdd < 5.25V.
All
Maximum Block Clocking Frequency (> 4.75V)
Functions
Timer
50a
Capture Pulse Width
–
–
ns
Maximum Frequency, No Capture
Maximum Frequency, With or Without Capture
Enable Pulse Width
–
–
–
–
–
24.84
24.84
–
MHz
MHz
ns
4.75V < Vdd < 5.25V.
4.75V < Vdd < 5.25V.
Counter
50
–
Maximum Frequency, No Enable Input
Maximum Frequency, Enable Input
–
–
49.2
24.6
MHz
MHz
–
Dead Band Kill Pulse Width:
Asynchronous Restart Mode
20
50
50
–
–
–
–
–
–
–
ns
Synchronous Restart Mode
Disable Mode
–
ns
–
ns
Maximum Frequency
24.84
24.84
MHz
MHz
4.75V < Vdd < 5.25V.
4.75V < Vdd < 5.25V.
CRCPRS
Maximum Input Clock Frequency
–
(PRS Mode)
CRCPRS
(CRC Mode)
Maximum Input Clock Frequency
Maximum Input Clock Frequency
–
–
–
–
24.84
8.2
MHz
MHz
SPIM
SPIS
Maximum data rate at 4.1 MHz due to 2 x over
clocking.
Maximum Input Clock Frequency
–
–
–
–
4.1
–
MHz
ns
Width of SS_ Negated Between Transmissions
50
–
Transmitter Maximum Input Clock Frequency
24.84
MHz
Maximum data rate at 3.08 MHz due to 8 x over
clocking.
Receiver Maximum Input Clock Frequency
–
–
24.84
MHz
Maximum data rate at 3.08 MHz due to 8 x over
clocking.
a. 50 ns minimum input pulse width is based on the input synchronizers running at 12 MHz (84 ns nominal period).
May 24, 2005
Document No. 001-00353 Rev. **
19
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