参数资料
| 型号： | 24LC22AT-I/SN |
| 厂商： | Microchip Technology |
| 文件页数： | 13/24页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 2KBIT 400KHZ 8SOIC |
| 产品培训模块： | I2C Serial EEPROM |
| 标准包装： | 3,300 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 2K (256 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： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 带卷 (TR) |
| 其它名称： | 24LC22ATI/SN |
24LC22A
FIGURE 7-3:
SEQUENTIAL READ
Bus Activity
Master
Control
Byte
Data n
Data n + 1
Data n + 2
Data n + x
S
T
O
P
SDA Line
P
Bus Activity
A
C
K
A
C
K
A
C
K
A
C
K
N
O
A
C
K
8.0
PIN DESCRIPTIONS
8.2
Serial Clock (SCL)
The descriptions of the pins are listed in Table 8-1.
This pin is the clock input for the Bidirectional mode,
and is used to synchronize data transfer to and from the
TABLE 8-1:
Name
PIN FUNCTION TABLE
Function
device. It is also used as the signaling input to switch
the device from the Transmit-Only mode to the Bidirec-
tional mode. It must remain high for the chip to continue
operation in the Transmit-Only mode.
V SS
SDA
Ground
Serial Address/Data I/O
8.3
Serial Clock (VCLK)
SCL
VCLK
V CC
NC
Serial Clock (Bidirectional mode)
Serial Clock (Transmit-Only mode)
+2.5V to 5.5V Power Supply
No Internal Connection
This pin is the clock input for the Transmit-Only mode
(DDC1). In the Transmit-Only mode, each bit is clocked
out on the rising edge of this signal. In the Bidirectional
mode, a high logic level is required on this pin to enable
write capability.
8.1
Serial Address/Data Input/Output
(SDA)
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 10 k Ω for 100 kHz, 2 k Ω 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.
? 2007 Microchip Technology Inc.
DS21683B-page 13
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| 24LC256-E/P | 功能描述:电可擦除可编程只读存储器 32kx8 - 2.5V 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 |
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