参数资料
型号: AT24C256C-XHL-T
厂商: Atmel
文件页数: 6/21页
文件大小: 0K
描述: IC EEPROM 256KBIT IND 8TSSOP
标准包装: 1
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 256K (32K x 8)
速度: 400kHz,1MHz
接口: I²C,2 线串口
电源电压: 1.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 8-TSSOP
包装: 剪切带 (CT)
其它名称: AT24C256C-XHL-TCT
6.
Device Operation
Clock and Data Transitions: The SDA pin is normally pulled high with an external device. Data on the SDA pin may
change only during SCL low time periods (See Figure 6-1 ). Data changes during SCL high periods will indicate a start or
stop condition as defined below.
Figure 6-1.
SDA
SCL
Data Validity
Data Stable
Data Stable
Data
Change
Start Condition : A high-to-low transition of SDA with SCL high is a start condition that must precede any other command
(See Figure 6-2 ).
Figure 6-2. Start and Stop Definition
SDA
SCL
Start
Stop
Stop Condition: A low-to-high transition of SDA with SCL high is a stop condition. After a read sequence, the stop
command will place the EEPROM in a standby power mode (See Figure 6-2 ).
Acknowledge: All addresses and data words are serially transmitted to and from the EEPROM in 8-bit words. The
EEPROM sends a zero during the ninth clock cycle to acknowledge that it has received each word.
Standby Mode: AT24C256C features a low-power standby mode that is enabled upon power-up and after the receipt of
the stop bit and the completion of any internal operations.
Atmel AT24C256C [DATASHEET]
8568E–SEEPR–8/2012
6
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