pcf8564a NXP Semiconductors, pcf8564a Datasheet - Page 29

• Manufacturer Part Number: pcf8564a
• Description: Real Time Clock And Calendar
• Manufacturer: NXP Semiconductors

NXP Semiconductors
14. Dynamic characteristics
Table 30.
V
specified.
[1]
[2]
[3]
[4]
PCF8564A_1
Product data sheet
Symbol
Oscillator
C
Quartz crystal parameters
R
C
CLKOUT output
I
f
t
t
t
t
t
t
C
t
t
t
t
2
SCL
HD;STA
SU;STA
LOW
HIGH
r
f
SU;DAT
HD;DAT
SU;STO
w(spike)
DD
CLKOUT
f
C-bus timing characteristics (see
L(itg)
s
L
b
osc
= 1.8 V to 5.5 V; V
Integrated load capacitance, C
Unspecified for f
All timing values are valid within the operating supply voltage at ambient temperature and referenced to V
swing of V
A detailed description of the I
/f
osc
Dynamic characteristics
Parameter
integrated load capacitance
relative oscillator frequency variation
series resistance
load capacitance
duty cycle on pin CLKOUT
SCL clock frequency
hold time (repeated) START condition
set-up time for a repeated START
condition
LOW period of the SCL clock
HIGH period of the SCL clock
rise time of both SDA and SCL signals
fall time of both SDA and SCL signals
capacitive load for each bus line
data set-up time
data hold time
set-up time for STOP condition
spike pulse width
SS
to V
CLKOUT
DD
.
SS
= 32.768 kHz.
= 0 V; T
2
C-bus specification is given in
L(itg)
amb
, is a calculation of C
= 40 C to +85 C; f
Figure
25)
[3][4]
Rev. 1 — 8 October 2009
Conditions
T
OSCI
V
amb
DD
and C
Ref. 11
osc
= 25 C
= 200 mV;
= 32.768 kHz; quartz R
OSCO
“UM10204”.
in series:
[1]
[2]
C
Min
6
-
-
-
-
-
0.6
0.6
1.3
0.6
-
-
-
100
0
0.6
-
L itg
=
s
= 40 k ; C
--------------------------------------------
C
C
OSCI
Real time clock and calendar
OSCI
Typ
8
0.2
-
8
50
-
-
-
-
-
-
-
-
-
-
-
-
+
C
C
IL
L
OSCO
OSCO
and V
= 8 pF; unless otherwise
PCF8564A
Max
10
-
100
-
-
400
-
-
-
-
0.3
0.3
400
-
-
-
50
© NXP B.V. 2009. All rights reserved.
IH
.
with an input voltage
Unit
pF
ppm
k
pF
%
kHz
pF
ns
ns
ns
29 of 44
s
s
s
s
s
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