Cypress CY14B101P - Manual (Page 24)

PRELIMINARY CY14B101P
Document #: 001-44109 Rev. *B Page 24 of 32
Table 12. RTC Characteristics
Parameters Description Test Conditions Min Typ Max Units
I
BAK
[7] RTC Backup Current Room Temperature (25 o C) 300 nA
Hot Temperature (85
o
C) 450 nA
V
RTCbat
RTC Battery Pin Voltage 1.8 3.0 3.3 V
V
RTCcap
RTC Capacitor Pin Voltage 1.5 3.0 3.6 V
t
OCS
RTC Oscillator Time to Start 1 2 sec
AC Switching Characteristics
Cypress
Parameter
Alt. Parameter Description
40 MHz
25 MHz
(RDRTC Instruction)
Unit
Min Max Min Max
f
SCK
f
SCK
Clock Frequency, SCK 40 25 MHz
t
CL
t
WL
Clock Pulse Width LOW 11 18 ns
t
CH
t
WH
Clock Pulse Width HIGH 11 18 ns
t
CS
t
CE
CS HIGH Time 20 20 ns
t
CSS
t
CES
CS Setup Time 10 10 ns
t
CSH
t
CEH
CS Hold Time 10 10 ns
t
SD
t
SU
Data In Setup Time 5 5 ns
t
HD
t
H
Data In Hold Time 5 5 ns
t
HH
t
HD
HOLD Hold Time 5 5 ns
t
SH
t
CD
HOLD Setup Time 5 5 ns
t
CO
t
V
Output Valid 9 15 ns
t
HHZ
t
HZ
HOLD to Output HIGH Z 15 15 ns
tH
LZ
t
LZ
HOLD to Output LOW Z 15 15 ns
t
OH
t
HO
Output Hold Time 0 0 ns
t
HZCS
t
DIS
Output Disable Time 25 25 ns
Notes
7. Current drawn from either V
RTCcap
or V
RTCbat
when V
CC
< V
SWITCH.
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