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CY14B101K
Document Number: 001-06401 Rev. *I 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
PF
PFE
AF
AIE
P/L
Pin
Driver
H/L
INT
V
CC
V
SS
C
1
C
2
RF
Y
1
X
1
X
2
A
0
A
1
A
2
A
3
DQ
0
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
F
< 0.4V at I
F
=100mA) are recommended at pins A
0
- A
3
and DQ
0
in applications where undershoot exceeds -0.5V. Please see application note
AN49947 for further details.
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