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AT45DB081E Datasheet(PDF) 21 Page - Dialog Semiconductor

Part # AT45DB081E
Description  8-Mbit DataFlash (with Extra 256-kbits) 1.7 V Minimum SPI Serial Flash Memory
PDF  79 Pages
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Manufacturer  DIALOG [Dialog Semiconductor]
Direct Link  http://www.dialog-semiconductor.com/
Logo DIALOG - Dialog Semiconductor

AT45DB081E Datasheet(HTML) 21 Page - Dialog Semiconductor

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AT45DB081E
DS-AT45DB081E–028K–03-2021
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
7.10 Chip Erase
The Chip Erase command allows the entire main memory array to be erased can be erased at one time.
To execute the Chip Erase command, a four-byte command sequence of C7h, 94h, 80h, and 9Ah must be clocked
into the device. Since the entire memory array is to be erased, no address bytes need to be clocked into the
device, and any data clocked in after the opcode is ignored. After the last bit of the opcode sequence has been
clocked in, the CS pin must be deasserted to start the erase process. The erase operation is internally self-timed
and takes a time of tCE. During this time, the RDY/BUSY bit in the Status Register indicates that the device is busy.
The Chip Erase command does not affect sectors that are protected or locked down; the contents of those sectors
remain unchanged. Only those sectors that are not protected or locked down are erased.
The WP pin can be asserted while the device is erasing, but protection is not activated until the internal erase cycle
completes.
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 7-3.
Chip Erase Command
Figure 7-1. Chip Erase
PA11/
A19
PA10/
A18
PA9/
A17
PA8/
A16
PA7/
A15
PA6/
A14
PA5/
A13
PA4/
A12
PA3/
A11
PA2/
A10
PA1/
A9
PA0/
A8
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
Command
Byte 1
Byte 2
Byte 3
Byte 4
Chip Erase
C7h
94h
80h
9Ah
C7h
94h
80h
9Ah
CS
Each transition represents eight bits



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