參數資料
| 型號： | MCP79400-I/ST |
| 廠商： | Microchip Technology |
| 文件頁數： | 2/15頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RTCC 64B SRAM 8TSSOP |
| 標準包裝： | 100 |
| 類型： | 時鐘/日歷 |
| 特點： | 警報器，閏年，方波輸出，SRAM，唯一 ID |
| 存儲容量： | 64B |
| 時間格式： | HH:MM:SS（12/24 小時） |
| 數據格式： | YY-MM-DD-dd |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 1.8 V ~ 5.5 V |
| 電壓 - 電源，電池： | 1.3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 8-TSSOP |
| 包裝： | 管件 |
MCP7940X
DS25009C-page 10
2011 Microchip Technology Inc.
4.1.3
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 4-4 for the flow diagram.
FIGURE 4-4:
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PDF資料 |
PDF描述 |
|---|---|
| DS1804Z-050+ | IC POT TRIMMER NV 50K 8-SOIC |
| MCP7940N-I/MS | IC RTCC 64B SRAM GP 8-MSOP |
| MAX5417LETA+T | IC POT DGTL 256-TAP I2C 8-TDFN |
| DS1747P-70IND+ | IC RTC RAM Y2K 5V 70NS 34-PCM |
| VE-B3B-MV | CONVERTER MOD DC/DC 95V 150W |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MCP79400T-I | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:I2C Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover |
| MCP79400T-I/MNY | 功能描述:實時時鐘 I2C GP RTCC 64B SRAM ID 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 時間格式:HH:MM:SS RTC 存儲容量: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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| MCP79400T-I/MS | 功能描述:實時時鐘 I2C GP RTCC 64B SRAM ID 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 時間格式:HH:MM:SS RTC 存儲容量: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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| MCP79400T-I/SN | 功能描述:實時時鐘 I2C GP RTCC 64B SRAM ID 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 時間格式:HH:MM:SS RTC 存儲容量: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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| MCP79400T-I/SN-CUT TAPE | 制造商:Microchip 功能描述:MCP79400 Series 5.5 V 64 byte SMT I2C?Real-Time Clock/Calendar - SOIC-8 |
發(fā)布緊急采購，3分鐘左右您將得到回復。