Cypress Semiconductor CY8C24894 Manual do Utilizador Página 35

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CY8C24094, CY8C24794
CY8C24894, CY8C24994
Document Number: 38-12018 Rev. *Q Page 35 of 48
10.4.7 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 -40
°C T
A
85°C, or 3.0V to 3.6V and -40°C T
A
85°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and
are for design guidance only.
10.4.8 AC Analog Output Buffer Specifications
The following tables list guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V
and -40
°C T
A
85°C, or 3.0V to 3.6V and -40°C T
A
85°C, respectively. Typical parameters apply to 5V and 3.3V at 25°C and
are for design guidance only.
Table 10-23. AC External Clock Specifications
Symbol Description Min Typ Max Units 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
Table 10-24. 5V AC Analog Output Buffer Specifications
Symbol Description Min Typ Max Units Notes
T
ROB
Rising Settling Time to 0.1%, 1V Step, 100pF Load
Power = Low
Power = High
2.5
2.5
μs
μs
T
SOB
Falling Settling Time to 0.1%, 1V Step, 100pF Load
Power = Low
Power = High
2.2
2.2
μs
μs
SR
ROB
Rising Slew Rate (20% to 80%), 1V Step, 100 pF Load
Power = Low
Power = High
0.65
0.65
V/μs
V/
μs
SR
FOB
Falling Slew Rate (80% to 20%), 1V Step, 100 pF Load
Power = Low
Power = High
0.65
0.65
V/μs
V/
μs
BW
OBSS
Small Signal Bandwidth, 20mV
pp
, 3dB BW, 100 pF Load
Power = Low
Power = High
0.8
0.8
MHz
MHz
BW
OBLS
Large Signal Bandwidth, 1V
pp
, 3dB BW, 100 pF Load
Power = Low
Power = High
300
300
kHz
kHz
Table 10-25. 3.3V AC Analog Output Buffer Specifications
Symbol Description Min Typ Max Units Notes
T
ROB
Rising Settling Time to 0.1%, 1V Step, 100 pF Load
Power = Low
Power = High
3.8
3.8
μs
μs
T
SOB
Falling Settling Time to 0.1%, 1V Step, 100 pF Load
Power = Low
Power = High
2.6
2.6
μs
μs
SR
ROB
Rising Slew Rate (20% to 80%), 1V Step, 100 pF Load
Power = Low
Power = High
0.5
0.5
V/μs
V/μs
SR
FOB
Falling Slew Rate (80% to 20%), 1V Step, 100 pF Load
Power = Low
Power = High
0.5
0.5
V/μs
V/μs
BW
OBSS
Small Signal Bandwidth, 20mV
pp
, 3dB BW, 100 pF Load
Power = Low
Power = High
0.7
0.7
MHz
MHz
BW
OBLS
Large Signal Bandwidth, 1V
pp
, 3dB BW, 100 pF Load
Power = Low
Power = High
200
200
kHz
kHz
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