CY14B101K
Document Number: 001-06401 Rev. *I
Page 22 of 28
RTC Characteristics
Parameter
Description
Test Conditions
Min
Max
Unit
I
BAK
[26]
RTC Backup Current
Commercial
300
nA
Industrial
350
nA
V
RTCbat
[27]
RTC Battery Pin Voltage
1.8
3.3
V
V
RTCcap
[28]
RTC Capacitor Pin Voltage
1.2
2.7
V
tOCS
RTC Oscillator Time to Start
At Min Temperature from Power up or Enable
10
sec
At 25
°
C Temperature from Power up or Enable
5
sec
Truth Table For SRAM Operations
HSB should remain HIGH for SRAM Operations.
CE
WE
OE
Inputs and Outputs
Mode
Power
H
X
X
High Z
Deselect/Power down
Standby
L
H
L
Data Out (DQ
0
–DQ
7
);
Read
Active
L
H
H
High Z
Output Disabled
Active
L
L
X
Data in (DQ
0
–DQ
7
);
Write
Active
Notes
26. From either V
RTCcap
or V
RTCbat.
27. Typical = 3.0V during normal operation.
28. Typical = 2.4V during normal operation.
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