PCF2127TSLASH2Y datasheet(68/100 Pages) PHILIPS

Part #	PCF2127T/2Y

Description	Accurate RTC with integrated quartz crystal for industrial applications

PDF	100 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

Logo

68 / 100 page

PCF2127

All information provided in this document is subject to legal disclaimers.

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

MSB

LSB

1R/W

Fig 44. Bus protocol, writing to registers

Fig 45. Bus protocol, reading from registers

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