AT25FF081A datasheet(76/122 Pages) DIALOG

76 / 122 page

Datasheet

5-Aug-2021

DS-AT25FF081A-183

Revision G

AT25FF081A

Datasheet

8 Mbit, 1.65 V - 3.6 V Range

SPI Serial Flash Memory with Multi-I/O Support

7.11.4 Device Status

When the CS pin is deasserted, the program or erase operation currently in progress suspends within a time of tSUSE. Hardware

sets the Suspend (SUSP) bit in Status Register 2 and the ES or PS bits in Status Register 5 to indicate that the program or erase

operation has been suspended. Also, hardware clears the RDY/BSY bit in Status Register 1 to indicate that the device is ready

for another operation.

7.11.5 Programming Restrictions

The Erase/Program Suspend command adheres to the following programming restrictions.

The following commands cannot be suspended:



Write Status Register 1 (01h)



Write Status Register 2 (31h)



Write Status Register 3 (11h)



Write Status Registers (71h)



Status Register Lock (6Fh)



Program OTP Security Registers (9Bh)



Chip Erase (60h/C7h)



Sequential Programming (AFh/ADh)

Hardware ignores the Program/Suspend command if it is issued while these commands are in progress.

Erase Suspend and Program Suspend Ordering

A program operation can be performed while an erase operation is suspended. However, that operation must be completed before

the erase operation can be resumed. Also, an erase operation cannot be performed while a program operation is suspended.

Other device operations, such as a Read Status Register, can also be performed while a program or erase operation is suspended.

Write Enable Latch Ignored

Since the need to suspend a program or erase operation is immediate, the Write Enable command does not need to be issued

prior to the Program/Erase Suspend command being issued. Therefore, the Program/Erase Suspend command operates inde-

pendently of the state of the WEL bit in the Status Register.

Deasserting the CS Pin

The complete command must be clocked into the device before the CS pin is deasserted. Also, the CS pin must be deasserted

on a byte boundary (multiples of eight bits). Otherwise, no suspend operation is performed.

Accessing a Suspended Area

If a read operation is attempted to a suspended area (page for programming or block for erasing), then the device outputs

undefined data. Therefore, when performing a Read Array operation to an unsuspended area and the device's internal address

counter increments and crosses into the suspended area, the device starts outputting undefined data until the internal address

counter crosses to an unsuspended area.

AT25FF081A Datasheet(PDF) 76 Page - Dialog Semiconductor

AT25FF081A Datasheet(HTML) 76 Page - Dialog Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL