參數(shù)資料
型號(hào)： PCF8573T
廠商： NXP SEMICONDUCTORS
元件分類： XO, clock
英文描述： Clock/calendar with Power Fail Detector
中文描述： 0 TIMER(S), REAL TIME CLOCK, PDSO16
封裝： 7.50 MM, PLASTIC, MS-013, SOT-162-1, SO-16
文件頁(yè)數(shù)： 9/24頁(yè)
文件大?。?/td> 198K
代理商： PCF8573T
1997 Mar 28
9
Philips Semiconductors
Product specification
Clock/calendar with Power Fail Detector
PCF8573
9
I
2
C-BUS PROTOCOL
9.1
Addressing
Before any data is transmitted on the I
2
C-bus, the device which should respond is addressed first. The addressing is
always done with the first byte transmitted after the start procedure.
The clock/calendar acts as a slave receiver or slave transmitter. Therefore the clock signal SCL is only an input signal,
but the data signal SDA is a bidirectional line.
The clock/calendar slave address is shown in Fig.7. Bits A0 and A1 correspond to the two hardware address pins A0 and
A1. Connecting these to V
DD
or V
SS
allows the device to have 1 of 4 different addresses.
9.2
Clock/calendar READ/WRITE cycles
The I
2
C-bus configuration for different clock/calendar READ and WRITE cycles is shown in Figs 8, 9 and 10.
The write cycle is used to set the time counter, the alarm register and the flags. The transmission of the clock/calendar
address is followed by the MODE-POINTER-word which contains a CONTROL-nibble (Table 3) and an
ADDRESS-nibble (Table 4). The ADDRESS-nibble is valid only if the preceding CONTROL-nibble is set to EXECUTE
ADDRESS. The third transmitted word contains the data to be written into the time counter or alarm register.
Fig.7 Slave address.
Fig.8 Master transmitter transmits to clock/calendar slave receiver.
相關(guān)PDF資料
PDF描述
PCF8574 Remote 8-bit I/O expander for I2C-bus
PCF8578 LCD row/column driver for dot matrix graphic displays
PCF8578H LCD row/column driver for dot matrix graphic displays
PCF8578U LCD row/column driver for dot matrix graphic displays
PCF8579 LCD column driver for dot matrix graphic displays
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCF8573TD 制造商:NXP Semiconductors 功能描述:Real Time Clock, 16 Pin, Plastic, SOP
PCF8573TD-T 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Real-Time Clock
PCF8574 制造商:TI 制造商全稱:Texas Instruments 功能描述:REMOTE 8-BIT I/O EXPANDER FOR I2C BUS
PCF8574_02 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Remote 8-bit I/O expander for I2C-bus
PCF8574_07 制造商:TI 制造商全稱:Texas Instruments 功能描述:REMOTE 8-BIT I/O EXPANDER FOR I2C BUS
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*