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PCF2128 Datasheet(PDF) 6 Page - NXP Semiconductors

Part No. PCF2128
Description  Integrated RTC / TCXO / Crystal
Download  10 Pages
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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PCF2128 Datasheet(HTML) 6 Page - NXP Semiconductors

 
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PCF2128_SDS_0
© NXP B.V. 2007. All rights reserved.
Preliminary [short] data sheet
Rev. 00.03 — 4 June 2007
6 of 10
NXP Semiconductors
PCF2128
Real time clock / calendar
8.1 Application example
8.1.1 Timekeeping, power management, CLKOUT, timestamp and interface active
PCF2128 used for timekeeping, power management, CLKOUT and timestamp functions
(see Figure 4). The interface is active. Vout supplies an external chip (e.g. SRAM).
Fig 4.
Application diagram: timekeeping, power management, CLKOUT, timestamp with the interface active
mgm002_09
PCF2128
1
2
3
4
5
INT
SDA / CE
V
SS
SCL
SDI
SDO
V
DD
6
7
813
14
15
16
17
18
CLKOUT
19
20
n.c.
RST
V
BAT
IFS
V
OUT
9
10
12
11
n.c.
n.c.
n.c.
n.c.
PFO
TS
PFI
V
SS
V
DD = 2.2 - 5.5 V
100 nF
100 nF
microcontroller
SCL
SDI
SDO
CE
R
PU
INT
RST
to the MCU
R
1
R
2
Batt
100 nF
R
PU
PFO
INT
RST
from PCF2128
PFO
SRAM
V
DD
V
SS


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