參數(shù)資料
型號(hào)： 24AA024IST
廠商： Microchip Technology Inc.
元件分類： EEPROM
英文描述： 2K I2C Serial EEPROM
中文描述： 2K的I2C串行EEPROM
文件頁(yè)數(shù)： 6/22頁(yè)
文件大?。?/td> 254K
代理商： 24AA024IST
24AA024/24LC024/24AA025/24LC025
DS21210G-page 6
2004 Microchip Technology Inc.
5.0
DEVICE ADDRESSING
A control byte is the first byte received following the
Start condition from the master device (Figure 5-1).
The control byte consists of a four-bit control code. For
the 24AA024/24LC024/24AA025/24LC025, this is set
as ‘
1010
’ binary for read and write operations. The next
three bits of the control byte are the Chip Select bits
(A2, A1, A0). The Chip Select bits allow the use of up
to
eight
24AA024/24LC024/24AA025/24LC025
devices on the same bus and are used to select which
device is accessed. The Chip Select bits in the control
byte must correspond to the logic levels on the corre-
sponding A2, A1 and A0 pins for the device to respond.
These bits are in effect the three Most Significant bits of
the word address.
The last bit of the control byte defines the operation to
be performed. When set to a one, a read operation is
selected. When set to a zero, a write operation is
selected. Following the Start condition, the 24AA024/
24LC024/24AA025/24LC025 monitors the SDA bus
checking the control byte being transmitted. Upon
receiving a ‘
1010
’ code and appropriate Chip Select
bits, the slave device outputs an Acknowledge signal
on the SDA line. Depending on the state of the R/W bit,
the 24AA024/24LC024/24AA025/24LC025 will select a
read or write operation.
FIGURE 5-1:
CONTROL BYTE FORMAT
5.1
Contiguous Addressing Across
Multiple Devices
The Chip Select bits A2, A1 and A0 can be used to
expand the contiguous address space for up to 16K bits
by adding up to eight 24AA024/24LC024/24AA025/
24LC025 devices on the same bus. In this case, soft-
ware can use A0 of the control byte as address bit A8,
A1 as address bit A9 and A2 as address bit A10. It is
not possible to sequentially read across device
boundaries.
1
0
1
0
A2
A1
A0
S
ACK
R/W
Control Code
Chip Select
Bits
Slave Address
Acknowledge Bit
Start Bit
Read/Write Bit
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
24AA024T-I/MC 功能描述:電可擦除可編程只讀存儲(chǔ)器 2K 256X8 SER EE 1.8V IND RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
24AA024T-I/MNY 功能描述:電可擦除可編程只讀存儲(chǔ)器 2K 256X8 SER EE 1.8V 18 I/O 10-BIT ADC RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
24AA024T-I/MS 功能描述:電可擦除可編程只讀存儲(chǔ)器 256x8 - 1.8V RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
24AA024T-I/MSG 功能描述:電可擦除可編程只讀存儲(chǔ)器 256x8 - 1.8V Lead Free Package RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
24AA024T-I/P 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:2K I2C⑩ Serial EEPROM
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