參數(shù)資料
型號(hào)： MCP79402T-I/MNY
元件分類： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： REAL TIME CLOCK, PDSO8
封裝： 2 X 3 MM, 0.75 MM WIDTH, ROHS COMPLIANT, PLASTIC, TDFN-8
文件頁數(shù)： 40/40頁
文件大?。?/td> 817K
代理商： MCP79402T-I/MNY
2011 Microchip Technology Inc.
DS25009B-page 9
MCP7940X
3.1.3
ACKNOWLEDGE POLLING
Since the device will not acknowledge a Unique ID
command during an ID write cycle, this can be used to
determine when the cycle is complete. This feature can
be used to maximize bus throughput. Once the Stop
condition for a Write command has been issued from
the master, the device initiates the internally timed write
cycle. ACK polling can be initiated immediately. This
involves the master sending a Start condition, followed
by the control byte for a Write command (R/W = 0). If
the device is still busy with the write cycle, then no ACK
will be returned. If no ACK is returned, then the Start bit
and control byte must be resent. If the cycle is
complete, then the device will return the ACK, and the
master can then proceed with the next Read or Write
command. See Figure 3-4 for the flow diagram.
FIGURE 3-4:
ACKNOWLEDGE
POLLING FLOW
Send
ID Write Command
Send Stop
Condition to
Initiate ID Write Cycle
Send Start
Send Control Byte
with R/W = 0
Did Device
Acknowledge
(ACK = 0)?
Next
Operation
NO
YES
相關(guān)PDF資料
PDF描述
MCP79400-I/ST REAL TIME CLOCK, PDSO8
MCP79401T-I/ST REAL TIME CLOCK, PDSO8
MCP79401-I/MNY REAL TIME CLOCK, PDSO8
MCP7940NT-I/MNY REAL TIME CLOCK, PDSO8
MCP7940N-I/SN REAL TIME CLOCK, PDSO8
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCP7940M 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Low-Cost I2Ca?￠ Real-Time Clock/Calendar with SRAM
MCP7940M-I/MS 功能描述:實(shí)時(shí)時(shí)鐘 I2C RTCC 64B SRAM No VBAT RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
MCP7940M-I/P 功能描述:實(shí)時(shí)時(shí)鐘 I2C RTCC 64B SRAM No VBAT RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
MCP7940M-I/SN 功能描述:實(shí)時(shí)時(shí)鐘 I2C RTCC 64B SRAM No VBAT RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
MCP7940M-I/ST 功能描述:實(shí)時(shí)時(shí)鐘 I2C RTCC 64B SRAM No VBAT RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。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。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

我的聯(lián)系方式

*
*
*