参数资料
型号: AT24C128Y1-10YU-1.8
厂商: Atmel
文件页数: 7/23页
文件大小: 0K
描述: IC EEPROM 128KBIT 400KHZ 8MAP
标准包装: 120
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 128K (16K x 8)
速度: 100kHz,400kHz
接口: I²C,2 线串口
电源电压: 1.8 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-UDFN 裸露焊盘
供应商设备封装: 8-MAP(3x4.9)
包装: 管件
AT24C128/256
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 4 on
page 9). Data changes during SCL high periods will indicate a start or stop condition as
defined below.
START CONDITION: A high-to-low transition of SDA with SCL high is a start condition which
must precede any other command (see Figure 5 on page 9).
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 Fig-
ure 5 on page 9).
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 acknowl-
edge that it has received each word.
STANDBY MODE: The AT24C128/256 features a low power standby mode which is enabled:
a) upon power-up and b) after the receipt of the STOP bit and the completion of any internal
operations.
MEMORY RESET: After an interruption in protocol, power loss or system reset, any two-wire
part can be reset by following these steps: (a) Clock up to 9 cycles, (b) look for SDA high in
each cycle while SCL is high and then (c) create a start condition as SDA is high.
7
0670T–SEEPR–3/07
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