收藏本站
24C02C
3.0
FUNCTIONAL DESCRIPTIONS
4.4
Data Valid (D)
The 24C02C supports a bidirectional 2-wire bus and
data transmission protocol. A device that sends data
onto the bus is defined as transmitter, and a device
receiving data as receiver. The bus has to be controlled
by a master device that generates the Serial Clock
(SCL), controls the bus access, and generates the Start
and Stop conditions, while the 24C02C works as slave.
Both master and slave can operate as transmitter or
receiver but the master device determines which mode
is activated.
The state of the data line represents valid data when,
after a Start condition, the data line is stable for the
duration of the high period of the clock signal.
The data on the line must be changed during the low
period of the clock signal. There is one bit of data per
clock pulse.
Each data transfer is initiated with a Start condition and
terminated with a Stop condition. The number of the
data bytes transferred between the Start and Stop
conditions is determined by the master device and is
4.0
BUS CHARACTERISTICS
theoretically unlimited, although only the last sixteen
will be stored when doing a write operation. When an
The following bus protocol has been defined:
? Data transfer may be initiated only when the bus
overwrite does occur it will replace data in a first-in first-
out fashion.
is not busy.
? During data transfer, the data line must remain
4.5
Acknowledge
stable whenever the clock line is high. Changes in
the data line while the clock line is high will be
interpreted as a Start or Stop condition.
Accordingly, the following bus conditions have been
Each receiving device, when addressed, is required to
generate an acknowledge after the reception of each
byte. The master device must generate an extra clock
pulse, which is associated with this Acknowledge bit.
defined (Figure 4-1).
Note:
The 24C02C does not generate any
Acknowledge bits if an internal
4.1
Bus Not Busy (A)
programming cycle is in progress.
Both data and clock lines remain high.
The device that acknowledges has to pull down the
SDA line during the Acknowledge clock pulse in such a
4.2
Start Data Transfer (B)
way that the SDA line is stable low during the high
period of the acknowledge related clock pulse. Of
A high-to-low transition of the SDA line while the clock
(SCL) is high determines a Start condition. All
commands must be preceded by a Start condition.
course, setup and hold times must be taken into
account. A master must signal an end of data to the
slave by not generating an Acknowledge bit on the last
byte that has been clocked out of the slave. In this
4.3
Stop Data Transfer (C)
case, the slave must leave the data line high to enable
the master to generate the Stop condition (Figure 4-2).
A low-to-high transition of the SDA line while the clock
(SCL) is high determines a Stop condition. All opera-
tions must be ended with a Stop condition.
DS21202J-page 6
? 2008 Microchip Technology Inc.
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
24C08B-E/P IC EEPROM 8KBIT 100KHZ 8DIP
24FC1026-I/P IC EEPROM 1024KB 1MHZ 8-DIP
24FC128-I/MNY IC EEPROM 128KBIT 1MHZ 8TDFN
24FC515T-I/SM IC EEPROM 512KBIT 1MHZ 8SOIC
24FC64T-I/MF IC EEPROM 64KBIT 1MHZ 8DFN
24LC014H-I/P IC EEPROM 1KBIT 400KHZ 8DIP
24LC014T-E/OT IC EEPROM 1KBIT 400KHZ SOT23-6
24LC01B-I/SNG IC EEPROM 1KBIT 400KHZ 8SOIC
相关代理商/技术参数
24C02C-I/MNY 功能描述:电可擦除可编程只读存储器 2K 256 X 8 SERIAL EE IND RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
24C02CI/MS 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2K 5.0V I2C⑩ Serial EEPROM
24C02C-I/MS 功能描述:电可擦除可编程只读存储器 256x8 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
24C02C-I/MSG 功能描述:电可擦除可编程只读存储器 256x8 Lead Free Package RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
24C02CI/P 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:2K 5.0V I2C⑩ Serial EEPROM
24C02C-I/P 功能描述:电可擦除可编程只读存储器 256x8 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
24C02C-I/P 制造商:Microchip Technology Inc 功能描述:Serial EEPROM IC
24C02C-I/PG 功能描述:电可擦除可编程只读存储器 256x8 Lead Free Package RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8