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M24M02-DR bảng dữ liệu(PDF) 13 Page - STMicroelectronics

tên linh kiện M24M02-DR
Giải thích chi tiết về linh kiện  2-Mbit serial IC bus EEPROM
PDF  38 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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M24M02-DR bảng dữ liệu(HTML) 13 Page - STMicroelectronics

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M24M02-DR
Device operation
37
4.5
Device addressing
To start communication between the bus master and the slave device, the bus master must
initiate a Start condition. Following this, the bus master sends the device select code, shown
in Table 3 (most significant bit first).
When the device select code is received, the device only responds if the Chip Enable
Address is the same as the value on the Chip Enable (E2) input.
The 8th bit is the Read/Write bit (RW). This bit is set to 1 for Read and 0 for Write operations.
If a match occurs on the device select code, the corresponding device gives an
acknowledgment on Serial Data (SDA) during the 9th bit time. If the device does not match
the device select code, it deselects itself from the bus, and goes into Standby mode.
Table 3. Device select code
Device type identifier(1)
1. The most significant bit, b7, is sent first.
Chip
Enable
MSB address
bits
RW
b7
b6
b5
b4
b3
b2
b1
b0
Device select code
when addressing
the memory array
10
10
E2(2)
2. E2 bit value is compared to the logic level applied on the input pin E2.
A17
A16
RW
Device select code
when addressing
the Identification
page
10
11
E2(2)
XX
RW



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