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Cypress CY8C21234 Manual De Usuario

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CY8C21634, CY8C21534
CY8C21434, CY8C21334, CY8C21234
Document Number: 38-12025  Rev. *O
Page 26 of 45
AC Electrical Characteristics
AC Chip-Level Specifications
The following tables list the guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V
and -40°C 
≤ T
A
 
≤ 85°C, 3.0V to 3.6V and -40°C ≤ T
A
 
≤ 85°C, or 2.4V to 3.0V and -40°C ≤ T
A
 
≤ 85°C, respectively. Typical parameters
apply to 5V, 3.3V, or 2.7V at 25°C and are for design guidance only. 
Table 25.  5V and 3.3V AC Chip-Level Specifications
Symbol
Description
Min
Typ
Max
Units
Notes
F
IMO24
Internal Main Oscillator Frequency for 24 MHz
23.4
24
24.6
MHz
Trimmed for 5V or 3.3V 
operation using factory trim 
values. See 
F
IMO6
Internal Main Oscillator Frequency for 6 MHz
5.75
6
6.35
MHz
Trimmed for 5V or 3.3V 
operation using factory trim 
values. See 
F
CPU1
CPU Frequency (5V Nominal)
0.93
24
24.6
MHz
24 MHz only for SLIMO 
mode = 0.
F
CPU2
CPU Frequency (3.3V Nominal)
0.93
12
12.3
MHz
F
BLK5
Digital PSoC Block Frequency
0
(5V Nominal)
0
48
49.2
MHz
Refer to the AC Digital Block 
Specifications.
F
BLK33
Digital PSoC Block Frequency (3.3V Nominal)
0
24
24.6
MHz
F
32K1
Internal Low Speed Oscillator Frequency
15
32
64
kHz
Jitter32k
32 kHz RMS Period Jitter
–
100
200
ns
Jitter32k
32 kHz Peak-to-Peak Period Jitter
–
1400
–
T
XRST
External Reset Pulse Width
10
–
–
μs
DC24M
24 MHz Duty Cycle
40
50
60
%
Step24M
24 MHz Trim Step Size
–
50
–
kHz
Fout48M
48 MHz Output Frequency
46.8
48.0
49.2
MHz
Trimmed. Using factory trim 
values.
Jitter24M1 24 MHz Peak-to-Peak Period Jitter (IMO)
–
600
ps
F
MAX
Maximum frequency of signal on row input or 
row output.
–
–
12.3
MHz
T
RAMP
Supply Ramp Time
0
–
–
μs
Notes
12. 4.75V < Vdd < 5.25V.
13. Accuracy derived from Internal Main Oscillator with appropriate trim for Vdd range.
14. 3.0V < Vdd < 3.6V. See Application Note 
 “Adjusting PSoC Microcontroller Trims for Dual Voltage-Range Operation” for information on trimming for 
operation at 3.3V.
15. See the individual user module data sheets for information on maximum frequencies for user modules.