Cypress Semiconductor CY8C24894 Especificaciones descargar pdf (Pagina 27)

CY8C24894

Document Number: 001-53754 Rev. *F Page 27 of 50

AC Electrical Characteristics

AC Chip-Level Specifications

Tab le 17 lists guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75 V to 5.25 V and –40

°C  T

 85 °C, or 3.0 V to 3.6 V and –40 °C  T

 85 °C, respectively. Typical parameters apply to 5 V and 3.3 V at 25 °C and are

for design guidance only.

Notes

13. Accuracy derived from IMO with appropriate trim for V

range.

14. See the individual user module datasheets for information on maximum frequencies for user modules.

15. Refer to Cypress Jitter Specifications application note, Understanding Datasheet Jitter Specifications for Cypress Timing Products – AN5054 for more information.

Table 17. AC Chip-Level Specifications

Symbol Description Min Typ Max Units Notes

IMO245V

IMO frequency for 24 MHz (5 V

nominal)

23.04

[13]

24 24.96

[13]

MHz Trimmed for 5 V operation using

factory trim values.

IMO243V

IMO frequency for 24 MHz (3.3 V

nominal)

22.08

[13]

24 25.92

[13]

MHz Trimmed for 3.3 V operation using

factory trim values.

CPU1

CPU frequency (5 V nominal) 0.090

[13]

24 24.96

[13]

MHz SLIMO mode = 0.

CPU2

CPU frequency (3.3 V nominal) 0.086

[13]

12 12.96

[13]

MHz SLIMO mode = 0.

BLK5

Digital PSoC block frequency (5 V

nominal)

0 48 49.92

[13,14]

MHz Refer to the AC Digital Block

Specifications.

BLK3

Digital PSoC block frequency (3.3 V

nominal)

0 24 25.92

[13,14]

MHz Refer to the AC Digital Block

Specifications.

32K1

ILO frequency 15 32 64 kHz This specification applies when

the ILO has been trimmed.

32KU

ILO untrimmed frequency 5 – 100 kHz After a reset and before the M8C

processor starts to execute, the

ILO is not trimmed.

XRST

External reset pulse width 10 – – µs

DC24M 24 MHz duty cycle 40 50 60 %

ILO

ILO duty cycle 20 50 80 %

Step24M 24 MHz trim step size – 50 – kHz

Fout48M 48 MHz output frequency 46.08

[13]

48 49.92

[13]

MHz 4.75 V  V

 5.25 V

MAX

Maximum frequency of signal on row

input or row output.

– – 12.96

[13]

MHz

POWERUP

Power supply slew rate – – 250 V/ms V

slew rate during power-up.

POWERUP

Time between end of POR state and

CPU code execution

– 16 100 ms Power-up from 0 V.

JIT_IMO

[15]

24 MHz IMO cycle-to-cycle jitter (RMS) – 200 1200 ps

24 MHz IMO long term N cycle-to-cycle

jitter (RMS)

– 900 6000 ps N = 32

24 MHz IMO period jitter (RMS) – 200 900 ps

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 49 50

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