参数资料
型号: 24LC21/SN
厂商: Microchip Technology
文件页数: 13/24页
文件大小: 0K
描述: IC EEPROM 1KBIT 400KHZ 8SOIC
产品培训模块: I2C Serial EEPROM
标准包装: 100
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 1K (128 x 8)
速度: 100kHz,400kHz
接口: I²C,2 线串口
电源电压: 2.5 V ~ 5.5 V
工作温度: 0°C ~ 70°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOICN
包装: 管件
产品目录页面: 1448 (CN2011-ZH PDF)
24LC21
8.0
PIN DESCRIPTIONS
8.2
SCL
TABLE 8-1:
Name
V SS
SDA
SCL
PIN FUNCTION TABLE
Function
Ground
Serial Address/Data I/O
Serial Clock (Bidirectional mode)
This pin is the clock input for the Bidirectional mode,
and is used to synchronize data transfer to and from the
device. It is also used as the signaling input to switch
the device from the Transmit-only mode to the
Bidirectional mode. It must remain high for the chip to
continue operation in the Transmit-only mode.
V CLK
Serial Clock (Transmit-only mode)
8.3
V CLK
V CC
NC
+2.5V to 5.5V Power Supply
No Connection
This pin is the clock input for the Transmit-only mode.
In the Transmit-only mode, each bit is clocked out on
8.1
SDA
the rising edge of this signal. In the Bidirectional mode,
a high logic level is required on this pin to enable write
This pin is used to transfer addresses and data into and
out of the device, when the device is in the Bidirectional
mode. In the Transmit-only mode, which only allows
data to be read from the device, data is also transferred
on the SDA pin. This pin is an open drain terminal,
therefore the SDA bus requires a pull-up resistor to
V CC (typical 10K ? for 100 kHz, 2K ? for 400 kHz).
For normal data transfer in the Bidirectional mode, SDA
is allowed to change only during SCL low. Changes
during SCL high are reserved for indicating the Start
and Stop conditions.
? 2004 Microchip Technology Inc.
capability.
DS21095J-page 13
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