Cypress CY8C20x36 Manual De Usuario

Document Number: 001-12696  Rev. *D

Page 22 of 34

The following table lists guaranteed maximum and minimum specifications for the entire voltage and temperature ranges.

The following table lists guaranteed maximum and minimum specifications for the entire voltage and temperature ranges. 

F

MAX

Maximum Operating Frequency

24

–

–

MHz

F

CPU

Maximum Processing Frequency

24

–

–

MHz

F

32K1

Internal Low Speed Oscillator Frequency

19

32

50

kHz

F

IMO24

Internal Main Oscillator Frequency at 24 
MHz Setting

22.8

24

25.2

MHz

F

IMO12

Internal Main Oscillator Frequency at 12 
MHz Setting

11.4

12

12.6

MHz

F

IMO6

Internal Main Oscillator Frequency at 6 
MHz Setting

5.7

6.0

6.3

MHz

DC

IMO

Duty Cycle of IMO

40

50

60

%

T

RAMP

Supply Ramp Time

0

–

–

μs

T

XRST

External Reset Pulse Width at Power Up After supply voltage is valid

1

ms

T

XRST2

External Reset Pulse Width after Power 
Up

Applies after part has booted

10

μs

F

GPIO

GPIO Operating Frequency

Normal Strong Mode Port 0, 1

0

0

–

–

6 MHz for

1.71V<Vdd<2.4V

12 MHz for

2.4V<Vdd<5.5V

MHz

TRise23

Rise Time, Strong Mode, Cload = 50 pF
Ports 2 or 3

Vdd = 3.0 to 3.6V, 10% – 90%

15

–

80

ns

TRise23L

Rise Time, Strong Mode Low Supply, 
Cload = 50 pF, Ports 2 or 3

Vdd = 1.71 to 3.0V, 10% – 90%

15

–

80

ns

TRise01

Rise Time, Strong Mode, Cload = 50 pF
Ports 0 or 1

Vdd = 3.0 to 3.6V, 10% – 90%
LDO enabled or disabled

10

–

50

ns

TRise01L

Rise Time, Strong Mode Low Supply, 
Cload = 50 pF, Ports 0 or 1

Vdd = 1.71 to 3.0V, 10% – 90%
LDO enabled or disabled

10

–

80

ns

TFall

Fall Time, Strong Mode, Cload = 50 pF
All Ports

Vdd = 3.0 to 3.6V, 10% – 90%

10

–

50

ns

TFallL

Fall Time, Strong Mode Low Supply, 
Cload = 50 pF, All Ports

Vdd = 1.71 to 3.0V, 10% – 90%

10

–

70

ns