參數(shù)資料
型號: PCF2128
廠商: NXP Semiconductors N.V.
英文描述: Integrated RTC / TCXO / Crystal
中文描述: 集成RTC /溫補/水晶
文件頁數(shù): 6/10頁
文件大?。?/td> 199K
代理商: PCF2128
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. V
out
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
8
13
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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