Cypress MicroSystems CY8C25122/CY8C26233/CY8C26443/CY8C26643 Family Data Sheet
136
Document #: 38-12010 CY Rev. ** CMS Rev. 3.20
September 5, 2002
13.3 AC Characteristics
Table 115:
AC Operating Specifications
Symbol
AC Operating Specifications
Minimum
Typical
Maximum
Unit
FCPU1
CPU Frequency (5 V Nominal)1,2,3
1.
4.75V < Vcc < 5.25V.
2.
Accuracy derived from Internal Main Oscillator with appropriate trim for Vcc range.
3.
0oC to +85oC.
91.35
2,400
2,460
kHz
FCPU2
CPU Frequency (3.3V Nominal)4,3
4.
3.0V < Vcc < 3.6V.
91.35
1,200
1,230
kHz
F48M
Digital PSoC Block Frequency
48
49.21,5
5.
See Application Note AN2012 ”Adjusting PSoC Microcontroller Trims for Dual Voltage-Range Operation” for infor-
mation on maximum frequency for User Modules.
MHz
F24M
Digital PSoC Block Frequency
24
24.62,4
MHz
FGPIO
GPIO Operating Frequency
12
MHz
FIMO
Internal Main Oscillator Frequency
(0oC to +85oC)
23.4
24
24.6
MHz
FIMOC
Internal Main Oscillator Frequency Cold
(-40oC to 0oC)
22.44
24
24.6
MHz
F32K1
Internal Low Speed Oscillator Frequency
(Non Sleep)
156
6.
Limits are valid only when not in sleep mode.
32
50
kHz
F32K2
Internal Low Speed Oscillator Frequency
(Sleep or Halt)
157
7.
Limits are valid only when in sleep mode.
32
64
kHz
F32K3
External Crystal Oscillator
-
32.7688
8.
Accuracy is capacitor and crystal dependent.
-
kHz
Fpll
PLL Frequency
-
23.9869
9.
Is a multiple (x732) of crystal frequency.
-
MHz
Tf
Output Fall Time
210
10. Load capacitance = 50 pF.
-
12
ns
Tr
Output Rise Time
39
-
18
ns
Tpllslew
PLL Lock Time
0.5
-
10
ms
SVdd
Vdd Rise Rate at Power Up
.08011
11. To minimum allowable voltage for desired frequency.
-
-
mV/ms
Tos
External Crystal Oscillator Startup to 1%
-
100
50012
12. The crystal oscillator frequency is guaranteed to be within 1% of its final value by the end of the 1s startup timer
period. Timer period may be as short as 640 ms for the case where F32K1 is 50 kHz. Correct operation assumes a
properly loaded 1uW maximum drive level 32.768 kHz crystal.
ms
Tosacc
External Crystal Oscillator Startup to 100 ppm -
150
60013
13. The crystal oscillator frequency is within 100 ppm of its final value by the end of the Tosacc period. Correct opera-
tion assumes a properly loaded 1 uW maximum drive level 32.768 kHz crystal. 3.0V <= Vcc <= 5.5V, -40 oC <= TA
<= 85 oC.
ms
Txrst
External Reset Pulse Width
1
-
-
µs
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