pcf2127a NXP Semiconductors, pcf2127a Datasheet - Page 18

• Manufacturer Part Number: pcf2127a
• Description: Integrated Rtc, Tcxo And Quartz Crystal
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF2127A_1
Product data sheet
8.6.1.1 Standard mode
8.6.1.2 Direct switching mode
If V
If V
If V
If V
Fig 4.
•
V
DD
DD
DD
DD
DD
V
Interface outputs are high-impedance
(= 2.5 V)
th(sw)bat
(= 0 V)
> V
< V
> V
< V
V
V
INT
BAT
BF
DD
Battery switch-over behavior in standard mode with bit BIE logic 1 (enabled)
BAT
BAT
BAT
BAT
backup battery operation
OR V
AND V
the internal power supply is V
the internal power supply is V
V
DD
BBS
DD
Rev. 01 — 21 January 2010
> V
< V
th(sw)bat
th(sw)bat
the internal power supply is V
the internal power supply is V
internal power supply (= V
DD
BAT
Integrated RTC, TCXO and quartz crystal
.
.
BBS
)
DD
BAT
.
PCF2127A
.
cleared via interface
© NXP B.V. 2010. All rights reserved.
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BBS