pcf2123 NXP Semiconductors, pcf2123 Datasheet - Page 40

• Manufacturer Part Number: pcf2123
• Description: Spi Real Time Clock/calendar
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 44.
V
specified.
[1]
[2]
[3]
[4]
[5]
PCF2123_1
Product data sheet
Symbol
I
R
C
Outputs
V
V
V
I
I
I
C
L
OH
OL
LO
DD
O
OH
OL
pd
i
L(itg)
= 1.1 V to 5.5 V; V
For reliable oscillator start at power-on: V
Timer source clock =
Implicit by design.
Refers to external pull-up voltage.
Integrated load capacitance, C
Static characteristics
Parameter
leakage current
pull-down resistance
input capacitance
output voltage
HIGH-level output voltage on pin SDO
LOW-level output voltage
HIGH-level output current
LOW-level output current
output leakage current
integrated load
capacitance
SS
1
60
= 0 V; T
Hz, level of pins CE, SDI and SCL is V
L(itg)
amb
, is a calculation of C
…continued
= 40 C to +85 C; f
DD
Conditions
V
SCL, OSCI, CLKOE, CLKOUT
V
on pin CE
-
on pins CLKOUT and INT
on pin OSCO
on pin SDO
on pin SDO
on pins CLKOUT and INT;
V
I
V
V
V
V
and CLKOUT
V
on pins OSCO and OSCI
OL
= V
I
I
DD
OH
DD
OL
DD
O
= V
= V
=1.5 mA
= V
DD(min)
= 0.4 V;
= 5 V;
= 4.6 V;
= 5 V on pin SDO
= 5 V on pins INT, SDO
Rev. 01 — 19 November 2008
DD
SS
DD
on pin CE
or V
+ 0.3 V.
or V
OSCI
SS
SS
and C
osc
on pins SDI,
DD
= 32.768 kHz; quartz R
OSCO
or V
SS
in series.
.
[3]
[4]
[5]
C
L itg
Min
-
-
0.8V
V
V
-
3.3
1
1
0.5
0.5
0.5
1.5
1
SS
SS
DD
=
s
= 15 k ; C
--------------------------------------------
C
C
OSCI
OSCI
SPI Real time clock/calendar
Typ
0
0
240
-
-
-
-
-
-
-
-
-
0
7
+
C
C
L
OSCO
OSCO
= 7 pF; unless otherwise
PCF2123
© NXP B.V. 2008. All rights reserved.
Max
+1
-
550
7
5.5
5.5
V
V
0.2V
0.4
1.5
-
+1
14
DD
DD
+0.5
DD
Unit
k
pF
V
V
V
V
V
V
mA
mA
pF
40 of 54
A
A
A