参数资料
型号: MCP79412-I/MNY
元件分类: 时钟/数据恢复及定时提取
英文描述: REAL TIME CLOCK, PDSO8
封装: 2 X 3 MM, 0.75 MM HEIGHT, ROHS COMPLAINT, PLASTIC, TDFN-8
文件页数: 40/40页
文件大小: 584K
代理商: MCP79412-I/MNY
2010-2011 Microchip Technology Inc.
DS22266C-page 9
MCP7941X
3.1.3
ACKNOWLEDGE POLLING
Since the device will not acknowledge an EEPROM
command during an EEPROM 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
EE Write Command
Send Stop
Condition to
Initiate EE Write Cycle
Send Start
Send Control Byte
with R/W = 0
Did Device
Acknowledge
(ACK = 0)?
Next
Operation
NO
YES
相关PDF资料
PDF描述
MCP79411T-I/MS REAL TIME CLOCK, PDSO8
MCP79411-I/ST REAL TIME CLOCK, PDSO8
MCP79412-I/ST REAL TIME CLOCK, PDSO8
MCP79411T-I/ST REAL TIME CLOCK, PDSO8
MCP79411T-I/MNY REAL TIME CLOCK, PDSO8
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参数描述
MCP79412T-I/MNY 功能描述:实时时钟 I2C GP RTCC 1Kb EE 64B SRAM EUI-64 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
MCP79412T-I/MS 功能描述:实时时钟 I2C GP RTCC 1Kb EE 64B SRAM EUI-64 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
MCP79412T-I/SN 功能描述:实时时钟 I2C GP RTCC 1Kb EE 64B SRAM EUI-64 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
MCP79412T-I/ST 功能描述:实时时钟 I2C GP RTCC 1Kb EE 64B SRAM EUI-64 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube
MCP79510 制造商:MAS 制造商全称:MAS 功能描述:3V SPI Real-Time Clock Calendar with Battery Switchover