Specifications
CY14B101P
Document Number: 001-44109 Rev. *O Page 26 of 36
RTC Characteristics
Over the Operating Range
Parameter Description Min Typ
[13]
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
t
RTCp
RTC processing time from end of ‘W’ bit set to ‘0’ – – 350 µs
tOCS RTC oscillator time to start – 1 2 sec
R
BKCHG
RTC backup capacitor charge current-limiting resistor 350 – 850
AC Switching Characteristics
Over the Operating Range
Parameters
[16]
Description
40 MHz
25 MHz
(RDRTC Instruction)
[17]
Unit
Cypress
Parameter
Alt. Parameter 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
[18]
t
HZ
HOLD to output HIGH-Z – 15 – 15 ns
tH
LZ
[18]
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
13. Typical values are at 25 °C, V
CC
= V
CC(Typ)
. Not 100% tested.
14. Current drawn from either V
RTCcap
or V
RTCbat
when V
CC
< V
SWITCH.
15. If V
RTCcap
> 0.5 V or if no capacitor is connected to V
RTCcap
pin, the oscillator will start in tOCS time. If a backup capacitor is connected and V
RTCcap
< 0.5 V, the
capacitor must be allowed to charge to 0.5 V for oscillator to start.
16. Test conditions assume signal transition time of 3 ns or less, timing reference levels of V
CC
/2, input pulse levels of 0 to V
CC(typ)
, and output loading of the specified
I
OL
/I
OH
and load capacitance shown in Figure 24.
17. Applicable for RTC opcode cycles, address cycles and dataout cycles.
18. These parameters are guaranteed by design and are not tested.
Not Recommended for New Designs