参数资料
型号: 24AA01T-I/OT
厂商: Microchip Technology
文件页数: 7/34页
文件大小: 0K
描述: IC EEPROM 1KBIT 400KHZ SOT23-5
产品培训模块: I2C Serial EEPROM
标准包装: 1
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: 1.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: SC-74A,SOT-753
供应商设备封装: SOT-23-5
包装: 标准包装
产品目录页面: 1444 (CN2011-ZH PDF)
其它名称: 24AA01T-I/OTDKR
24AA01/24LC01B
5.0
DEVICE ADDRESSING
FIGURE 5-1:
CONTROL BYTE
A control byte is the first byte received following the
Start condition from the master device. The control byte
consists of a four-bit control code. For the 24XX01, this
is set as ‘ 1010 ’ binary for read and write operations.
ALLOCATION
Read/Write Bit
Block
The next three bits of the control byte are “don’t cares”
for the 24XX01.
Control Code
Select
Bits
The last bit of the control byte defines the operation to
be performed. When set to ‘ 1 ’, a read operation is
S
1
0
1
0
x
x
x
R/W ACK
selected. When set to ‘ 0 ’, a write operation is selected.
Following the Start condition, the 24XX01 monitors the
SDA bus, checking the device type identifier being
Slave Address
transmitted. Upon receiving a ‘ 1010 ’ code, the slave
device outputs an Acknowledge signal on the SDA line.
Depending on the state of the R/W bit, the 24XX01 will
select a read or write operation.
Start Bit
x = “don’t care”
Acknowledge Bit
Operation
Read
Write
Control
Code
1010
1010
Block Select
Block Address
Block Address
R/W
1
0
FIGURE 5-2:
ADDRESS SEQUENCE BIT ASSIGNMENTS
Control Byte
Address Low Byte
1
0
1
0
x
x
x R/W
x
A
6
?
?
?
?
?
A
0
Control
Code
Block
Select
bits
x = “don’t care”
? 2009 Microchip Technology Inc.
DS21711J-page 7
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