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PCF2127T/2Y Datasheet(PDF) 68 Page - NXP Semiconductors

No. de pieza PCF2127T/2Y
Descripción Electrónicos  Accurate RTC with integrated quartz crystal for industrial applications
PDF  100 Pages
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Fabricante Electrónico  PHILIPS [NXP Semiconductors]
Página de inicio  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCF2127T/2Y Datasheet(HTML) 68 Page - NXP Semiconductors

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PCF2127
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet
Rev. 8 — 19 December 2014
68 of 100
NXP Semiconductors
PCF2127
Accurate RTC with integrated quartz crystal for industrial applications
The R/W bit defines the direction of the following single or multiple byte data transfer (read
is logic 1, write is logic 0).
For the format and the timing of the START condition (S), the STOP condition (P), and the
acknowledge (A) refer to the I2C-bus specification Ref. 13 “UM10204” and the
characteristics table (Table 93). In the write mode, a data transfer is terminated by sending
a STOP condition. A repeated START (Sr) condition is not applicable.
Table 88.
I2C slave address byte
Slave address
Bit
7
6
5
4
3
2
1
0
MSB
LSB
10
10
00
1R/W
Fig 44. Bus protocol, writing to registers
Fig 45. Bus protocol, reading from registers



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