参数资料
型号: IS24C02B-2GLI
厂商: INTEGRATED SILICON SOLUTION INC
元件分类: PROM
英文描述: 1K-bit/2K-bit 2-WIRE SERIAL CMOS EEPROM
中文描述: 256 X 8 I2C/2-WIRE SERIAL EEPROM, PDSO8
封装: 0.150 INCH, GREEN, SOIC-8
文件页数: 17/20页
文件大小: 340K
代理商: IS24C02B-2GLI
6
Integrated Silicon Solution, Inc. — www.issi.com
Rev. E
11/10/08
IS24C01B IS24C02B
DEVICE OPERATIOn
IS24C01B/02B features
serial communication and
supports a bi-directional 2-wire bus transmission protocol
called I2CTM.
2-WIRE BUS
The two-wire bus is defined as a Serial Data line (SDA), and
a Serial Clock line (SCL). The protocol defines any device
that sends data onto the SDA bus as a transmitter, and
the receiving devices as receivers. The bus is controlled
by Master device that generates the SCL, controls the bus
access, and generates the Stop and Start conditions. The
IS24C01B/02B is the Slave device on the bus.
The Bus Protocol:
– Data transfer may be initiated only when the bus is not
busy
– During a data transfer, the SDA line must remain stable
whenever the SCL line is high. Any changes in the SDA
line while the SCL line is high will be interpreted as a
Start or Stop condition.
The state of the SDA line represents valid data after a Start
condition. The SDA line must be stable for the duration of
the High period of the clock signal. The data on the SDA
line may be changed during the Low period of the clock
signal.There is one clock pulse per bit of data. Each data
transfer is initiated with a Start condition and terminated
with a Stop condition.
Start Condition
The Start condition precedes all commands to the device
and is defined as a High to Low transition of SDA when
SCL is High. The EEPROM monitors the SDA and SCL
lines and will not respond until the Start condition is met.
Stop Condition
The Stop condition is defined as a Low to High transition
of SDA when SCL is High. All operations must end with
a Stop condition.
Acknowledge (ACK)
After a successful data transfer, each receiving device is
requiredtogenerateanACK. TheAcknowledgingdevice
pulls down the SDA line.
Reset
The IS24C01B/02B contains a reset function in case the
2-wire bus transmission is accidentally interrupted (eg. a
power loss), or needs to be terminated mid-stream. The
reset is caused when the Master device creates a Start
condition. To do this, it may be necessary for the Master
device to monitor the SDA line while cycling the SCL up
to nine times. (For each clock signal transition to High,
the Master checks for a High level on SDA.)
Standby Mode
Power consumption is reduced in standby mode. The
IS24C01B/02B will enter standby mode: a) At Power-up,
and remain in it until SCL or SDA toggles; b) Following the
Stop signal if a no write operation is initiated;or c) Following
any internal write operation.
相关PDF资料
PDF描述
IS24C02B-2PLI 1K-bit/2K-bit 2-WIRE SERIAL CMOS EEPROM
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IS24C02B-2PI 功能描述:电可擦除可编程只读存储器 1.8V 2Kb Industrial Temp 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
IS24C02B-2PLI 功能描述:电可擦除可编程只读存储器 1.8V 2Kb Industrial Temp 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
IS24C02B-2ZI 功能描述:电可擦除可编程只读存储器 1.8V 2Kb Industrial Temp 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
IS24C02B-2ZI-TR 功能描述:电可擦除可编程只读存储器 1.8V 2Kb Industrial Temp 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