Specifications

CY14B104K, CY14B104M
Document #: 001-07103 Rev. *O Page 18 of 33
RTC Characteristics
Parameters Description Min Typ
[11]
Max Units
V
RTCbat
RTC Battery Pin Voltage 1.8 3.0 3.6 V
I
BAK
[14]
RTC Backup Current T
A
(Min) 0.35 μA
25°C 0.35 μA
T
A
(Max) 0.5 μA
V
RTCcap
[15]
RTC Capacitor Pin Voltage T
A
(Min) 1.6 3.6 V
25°C 1.5 3.0 3.6 V
T
A
(Max) 1.4 3.6 V
tOCS RTC Oscillator Time to Start 1 2 sec
R
BKCHG
RTC Backup Capacitor Charge Current-Limiting
Resistor
350 850 Ω
Notes
14. From either V
RTCcap
or V
RTCbat.
15. If V
RTCcap
> 0.5V or if no capacitor is connected to V
RTCcap
pin, the oscillator starts in tOCS time. If a backup capacitor is connected and V
RTCcap
< 0.5V, the capacitor
must be allowed to charge to 0.5V for oscillator to start.
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