Cypress CY14B256K Manual do Utilizador descarregar pdf (Página 10)

CY14B256K

Document Number: 001-06431 Rev. *H Page 10 of 28

Figure 5. Interrupt Block Diagram

Figure 6. RTC Recommended Component Configuration

WDF - Watchdog Timer Flag

WIE - Watchdog Interrupt

PF - Power Fail Flag

PFE - Power Fail Enable

AF - Alarm Flag

AIE - Alarm Interrupt Enable

P/L - Pulse Level

H/L - High/Low

Enable

Watchdog

Timer

Power

Monitor

Clock

Alarm

VINT

WDF

WIE

PFE

AIE

P/L

Driver

H/L

INT

Recommended Values:

Y1 = 32.768KHz

RF = 10M Ohm

C1 = 0 (install cap footprint, but leave unloaded)

C2 = 56 pF +

10% (do not vary from this value)

Note

4. Schottky diodes, (V

< 0.4V with I

at 100mA) are recommended at pins A

- A

and DQ

in applications where undershoot exceeds -0.5V. Please see application note

AN49947 for further details.

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CY14B256K 1
Hardware RECALL (Power Up) 4
Software STORE 4
Software RECALL 4
Data Protection 4
Noise Considerations 4
Best Practices 5
Low Average Active Power 5
Calibrating the Clock 8
Watchdog Timer 8
Products 28
PSoC Solutions 28

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