PCF8564A All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 3 — 26 August 2013 29 of 48
NXP Semiconductors
PCF8564A
Real time clock and calendar
[1] For reliable oscillator start-up at power-on: V
DD(po)min
=V
DD(min)
+0.3V.
[2] Timer source clock =
1
⁄
60
Hz.
[3] CLKOUT disabled (FE = 0 or CLKOE = 0).
[4] V
IL
and V
IH
with an input voltage swing of V
SS
to V
DD
.
[5] CLKOUT is open circuit.
[6] Current consumption when the CLKOUT pin is enabled is a function of the load on the pin, the output frequency, and the supply voltage.
The additional current consumption for a given load is calculated from: .
[7] Tested on sample basis.
I
LI
input leakage current V
I
= V
SS
or V
DD
-0-A
post ESD event 1- +1A
C
i
input capacitance
[7]
--7pF
Outputs
V
O
output voltage on pin CLKOUT 0.5 - V
DD
+0.5 V
on pin INT
0.5 - +5.5 V
I
OL
LOW-level output
current
on pin SDA;
V
OL
=0.4V; V
DD
=5V
3- - mA
on pin INT
;
V
OL
=0.4V; V
DD
=5V
1- - mA
on pin CLKOUT:
V
OL
=0.4V; V
DD
=5V
1- - mA
I
OH
HIGH-level output
current
on pin CLKOUT;
V
OH
=4.6V; V
DD
=5V
1- - mA
I
LO
output leakage current V
O
=V
SS
or V
DD
-0-A
post ESD event 1- +1A
Voltage detector
V
low
low voltage T
amb
=25C-0.91.0V
Table 30. Static characteristics
…continued
V
DD
= 1.8 V to 5.5 V; V
SS
=0V; T
amb
=
40
C to +85
C; f
osc
= 32.768 kHz; quartz R
s
=40k
; C
L
= 8 pF; unless otherwise
specified.
Symbol Parameter Conditions Min Typ Max Unit
