CY14C101I Datasheet, PDF (25/42 Pages) Cypress Semiconductor – 1 Mbit (128K x 8) Serial (I2C) nvSRAM with Real Time Clock

PRELIMINARY
CY14C101I
CY14B101I, CY14E101I
Figure 37. RTC Recommended Component Configuration
C1
Y1
C2
Xout
Xin
Recommended Values
Y1 = 32.768 KHz (12.5 pF)
C₁ = 10 pF
C₂ = 67 pF
Note: The recommended values for C1 and C2 include
board trace capacitance.
Watchdog
Timer
Power
Monitor
Clock
Alarm
WIE
WDF
PFE
PF
AIE
AF
Figure 38. Interrupt Block Diagram
512 Hz
Clock
Square
Wave
P/L
Pin
Driver
Mux
SEL Line
HI-Z
H/L
Control
SQWE
CAL
WIE/PIE/
AIE
Priority
Encoder
VCC
WDF - Watchdog timer flag
INT
WIE - Watchdog interrupt
enable
PF - Power fail flag
PFE - Power Fail Enable
V
SS
AF - Alarm fag
AIE - Alarm interrupt enable
P/L - Pulse level
H/L - High/Low
SQWE - Square wave enable
Document #: 001-54391 Rev. *C
Page 25 of 42
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