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PCF85263ATL/A 데이터시트(PDF) 64 Page - NXP Semiconductors

부품명 PCF85263ATL/A
상세설명  Tiny Real-Time Clock/calendar with alarm function, battery switch-over, time stamp input, and I2C-bus
PDF  100 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
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PCF85263ATL/A 데이터시트(HTML) 64 Page - NXP Semiconductors

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PCF85263A
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© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 4.1 — 27 November 2015
64 of 100
NXP Semiconductors
PCF85263A
Tiny RTC with alarm, battery switch-over, and I2C-bus
9.2 START and STOP conditions
A HIGH-to-LOW transition of the data line while the clock is HIGH is defined as the START
condition - S.
A LOW-to-HIGH transition of the data line while the clock is HIGH is defined as the STOP
condition - P (see Figure 34).
9.3 Acknowledge
Each byte of 8 bits is followed by an acknowledge cycle. An acknowledge is defined as
logic 0. A not-acknowledge is defined as logic 1.
When written to, the slave will generate an acknowledge after the reception of each byte.
After the acknowledge, another byte may be transmitted. It is also possible to send a
STOP or START condition.
When read from, the master receiver must generate an acknowledge after the reception
of each byte. When the master receiver no longer requires bytes to be transmitter, it must
generate a not-acknowledge. After the not-acknowledge, either a STOP or START
condition must be sent.
A detailed description of the I2C-bus specification is given in Ref. 14 “UM10204”.



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