CY8C34 Datasheet, PDF (89/99 Pages) Cypress Semiconductor – Programmable System-on-Chip (PSoC)

PRELIMINARY
PSoC^®3: CY8C34 Family Data Sheet
11.9 Clocking
Specifications are valid for -40°C ≤ Ta ≤ 85°C and Tj ≤ 100°C, except where noted. Specifications are valid for 1.71V to 5.5V, except
where noted.
11.9.1 32 kHz External Crystal
Table 11-74. 32 kHz External Crystal DC Specifications^[9]
Parameter
Description
Icc
Operating current
CL
External crystal capacitance
DL
Drive level
Conditions
Low power mode
Min
Typ
-
0.25
-
6
-
-
Max
Units
-
µA
-
pF
1
µW
Table 11-75. 32 kHz External Crystal AC Specifications
Parameter
Description
F
Frequency
DC
Output duty cycle^[9]
Ton
Startup time
Conditions
High power mode
Min
Typ
Max
-
32.768
-
20
50
80
-
1
-
11.9.2 Internal Main Oscillator
Table 11-76. IMO DC Specifications
Parameter
Description
Supply current
48 MHz
24 MHz - Non USB mode
24 MHz - USB mode
12 MHz
6 MHz
3 MHz
Conditions
Min
Typ
Max
-
300
-
-
160
-
With oscillator locking to USB bus
-
500
-
-
100
-
-
80
-
-
70
-
Table 11-77. IMO AC Specifications
Parameter
Description
Conditions
Min
Typ
Max
IMO frequency stability (with factory trim)
48 MHz
-5
-
5
24 MHz - Non USB mode
-4
-
4
Fimo
24 MHz - USB mode
With oscillator locking to USB bus -0.25
-
0.25
12 MHz
-3
-
3
6 MHz
-2
-
2
3 MHz
Startup time^[9]
Jitter (peak to peak)^[9]
-1
-
1
From enable (during normal system -
-
10
operation) or wakeup from low
power state
Jp-p
F = 24 MHz
-
0.9
-
F = 3 MHz
Jitter (long term)^[9]
-
1.6
-
Jperiod
F = 24 MHz
-
0.9
-
F = 3 MHz
-
12
-
Units
kHz
%
s
Units
µA
µA
µA
µA
µA
µA
Units
%
%
%
%
%
%
µs
ns
ns
ns
ns
Document Number: 001-53304 Rev. *B
Page 89 of 99
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