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AT45DB161E 데이터시트(PDF) 20 Page - Dialog Semiconductor

부품명 AT45DB161E
상세설명  16-Mbit DataFlash (with Extra 512-kbits) 2.3 V or 2.5 V Minimum SPI Serial Flash Memory
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AT45DB161E
DS-AT45DB161E–8782N–03-2021
Table 7-1.
Block Erase Addressing
7.9
Sector Erase
The Sector Erase command can be used to individually erase any sector in the main memory.
The main memory array is comprised of 17 sectors. Only one sector can be erased at a time. To erase Sector 0a
or Sector 0b with the standard DataFlash page size (528 bytes), opcode 7Ch must be clocked into the device,
followed by three address bytes comprised of two dummy bits, nine page address bits (PA11 - PA3), and 13
dummy bits. To erase Sector 1-15, opcode 7Ch must be clocked into the device, followed by three address bytes
comprised of two dummy bits, four page address bits (PA11 - PA8), and 18 dummy bits.
To erase Sector 0a or Sector 0b with the binary page size (512 bytes), opcode 7Ch must be clocked into the device
followed by three address bytes comprised of three dummy bits, nine page address bits (A20 - A12), and 12
dummy bits. To erase Sector 1-15 erase, opcode 7Ch must be clocked into the device, followed by three dummy
bits, four page address bits (A20 - A17), and 17 dummy bits.
The page address bits are used to specify any valid address location within the sector to be erased. When the CS
pin transitions from low-to high, the device erases the selected sector. This operation is internally timed and takes
a maximum time of tSE. During this time, the RDY/BUSY bit in the Status Register indicates that the device is busy.
The device also incorporates an intelligent algorithm that can detect when a byte location fails to erase properly. If
an erase error arises, it is indicated by the EPE bit in the Status Register.
Table 7-2.
Sector Erase Addressing
PA11/
A20
PA10/
A19
PA9/
A18
PA8/
A17
PA7/
A16
PA6/
A15
PA5/
A14
PA4/
A13
PA3/
A12
PA2/
A11
PA1/
A10
PA0/
A9
Block
0
0
0
0
0
0
0
0
0
X
X
X
0
0
0
0
0
0
0
0
0
1
X
X
X
1
0
0
0
0
0
0
0
1
0
X
X
X
2
0
0
0
0
0
0
0
1
1
X
X
X
3
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
1
1
1
1
1
1
1
0
0
X
X
X
508
1
1
1
1
1
1
1
0
1
X
X
X
509
1
1
1
1
1
1
1
1
0
X
X
X
510
1
1
1
1
1
1
1
1
1
X
X
X
511
PA11/
A20
PA10/
A19
PA9/
A18
PA8/
A17
PA7/
A16
PA6/
A15
PA5/
A14
PA4/
A13
PA3/
A12
PA2/
A11
PA1/
A10
PA0/
A9
Sector
0
0
0
0
0
0
0
0
0
X
X
X
0a
0
0
0
0
0
0
0
0
1
X
X
X
0b
0
0
0
1
X
X
X
X
X
X
X
X
1
0
0
1
0
X
X
X
X
X
X
X
X
2
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
1
1
0
0
X
X
X
X
X
X
X
X
12
1
1
0
1
X
X
X
X
X
X
X
X
13
1
1
1
0
X
X
X
X
X
X
X
X
14
1
1
1
1
X
X
X
X
X
X
X
X
15



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