Cypress CY7C64215 ユーザーズマニュアル
CY7C64215
Document 38-08036 Rev. *C
Page 23 of 30
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 0°C < T
and 0°C < T
A
< 70°C, or 3.0V to 3.6V and 0°C < T
A
< 70°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and are
for design guidance only.
AC External Clock Specifications
The following tables list guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V
and 0°C < T
and 0°C < T
A
< 70°C, or 3.0V to 3.6V and 0°C < T
A
< 70°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and are
for design guidance only.
Table 21. AC Digital Block Specifications
Function
Description
Min
Typ
Max
Unit
Notes
Timer
Capture Pulse Width
50
–
–
ns
Maximum Frequency, No Capture
–
–
49.92
MHz
4.75V < Vdd < 5.25V.
Maximum Frequency, With Capture
–
–
25.92
MHz
Counter
Enable Pulse Width
50
–
–
ns
Maximum Frequency, No Enable Input
–
–
49.92
MHz
4.75V < Vdd < 5.25V.
Maximum Frequency, Enable Input
–
–
25.92
MHz
Dead
Band
Band
Kill Pulse Width:
Asynchronous Restart Mode
20
–
–
ns
Synchronous Restart Mode
50
–
–
ns
Disable Mode
50
–
–
ns
Maximum Frequency
–
–
49.92
MHz
4.75V < Vdd < 5.25V.
CRCPRS
(PRS
Mode)
(PRS
Mode)
Maximum Input Clock Frequency
–
–
49.92
MHz
4.75V < Vdd < 5.25V.
CRCPRS
(CRC
Mode)
(CRC
Mode)
Maximum Input Clock Frequency
–
–
24.6
MHz
SPIM
Maximum Input Clock Frequency
–
–
8.2
MHz
Maximum data rate at 4.1 MHz due to
2 x over clocking.
2 x over clocking.
SPIS
Maximum Input Clock Frequency
–
–
4.1
MHz
Width of SS_ Negated Between Trans-
missions
missions
50
–
–
ns
Trans-
mitter
mitter
Maximum Input Clock Frequency
–
–
24.6
MHz
Maximum data rate at 3.08 MHz due to
8 x over clocking.
8 x over clocking.
Receiver
Maximum Input Clock Frequency
–
–
24.6
MHz
Maximum data rate at 3.08 MHz due to
8 x over clocking.
8 x over clocking.
Table 22. AC External Clock Specifications
Parameter
Description
Min
Typ
Max
Unit
Notes
F
OSCEXT
Frequency for USB Applications
23.94
24
24.06
MHz
–
Duty Cycle
47
50
53
%
–
Power - up to IMO Switch
150
–
–
μs
Note
11. 50 ns minimum input pulse width is based on the input synchronizers running at 24 MHz (42 ns nominal period).