Cypress Semiconductor CY8C21234 Bedienungsanleitung PDF herunterladen (Seite 28)

CY8C21634/CY8C21534

CY8C21434/CY8C21334/CY8C21234

Document Number: 38-12025 Rev. *Q Page 28 of 45

Figure 16. 24 MHz Period Jitter (IMO) Timing Diagram

Figure 17. 32 kHz Period Jitter (ILO) Timing Diagram

Table 24. 2.7V AC Chip-Level Specifications

Symbol Description Min Typ Max Units Notes

IMO12

Internal Main Oscillator Frequency for 12 MHz 11.5 12

12.7

[16,17,18]

MHz Trimmed for 2.7V operation

using factory trim values.

See Figure 14 on page 18.

SLIMO mode = 1.

IMO6

Internal Main Oscillator Frequency for 6 MHz 5.75 6 6.35

[16,17,18]

MHz Trimmed for 2.7V operation

using factory trim values.

See Figure 14 on page 18.

SLIMO mode = 1.

CPU1

CPU Frequency (2.7V Nominal) 0.093 3 3.15

[16,17]

MHz 24 MHz only for SLIMO

mode = 0.

BLK27

Digital PSoC Block Frequency (2.7V Nominal) 0 12 12.5

[16,17,18]

MHz Refer to AC Digital Block

Specifications on page 30.

32K1

Internal Low Speed Oscillator Frequency 8 32 96 kHz

Jitter32k 32 kHz RMS Period Jitter – 150 200 ns

Jitter32k 32 kHz Peak-to-Peak Period Jitter – 1400 –

XRST

External Reset Pulse Width 10 – – μs

MAX

Maximum frequency of signal on row input or

row output.

– – 12.3 MHz

RAMP

Supply Ramp Time 0 – – μs

Jitter24M1

24M

Jitter32k

32K1

Notes

16. 2.4V < Vdd < 3.0V.

17. Accuracy derived from Internal Main Oscillator with appropriate trim for Vdd range.

18. See Application Note AN2012 “Adjusting PSoC Microcontroller Trims for Dual Voltage-Range Operation” for information on maximum frequency for user modules.

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