NAND02G-B2D NUMONYX [Numonyx B.V], NAND02G-B2D Datasheet - Page 37

• Manufacturer Part Number: NAND02G-B2D
• Description: 2-Gbit, 2112-byte/1056-word page multiplane architecture, 1.8 V or 3 V, NAND flash memories
• Manufacturer: NUMONYX [Numonyx B.V]

NAND02G-B2D
6.12
6.13
Read status enhanced
In NAND flash devices with multiplane architecture, it is possible to independently read the
status register of a single plane using the Read Status Enhanced command. If the error bit
of the Status register, SR0, reports an error during or after a multiplane operation, the Read
Status Enhanced command is used to know which of the two planes contains the page that
failed the operation. Three address cycles are required to address the selected block and
page (A12-A28 for x 8 devices and A11-A27 for x 16 devices).
The output of the Read Status Enhanced command has the same coding as the Read
Status command. See
Enhanced waveform.
Read EDC status register
The devices contain an EDC Status register, which provides information on the errors that
occurred during the read cycles of the copy back and multiplane copy back operations. In
the case of multiplane copy back program it is not possible to distinguish which of the two
read operations caused the error.
The EDC Status register is read by issuing the Read EDC Status Register command.
After issuing the Read EDC Status Register command, a read cycle outputs the content of
the EDC Status register to the I/O pins on the falling edge of Chip Enable or Read Enable
signals, whichever occurs last. The operation is similar to the Read Status Register
command.
Table 13: EDC status register bits
for a description of register EDC Status register waveforms.
Table 13.
1. See
Bit
0
1
2
3
4
5
6
7
Table 12: Status register bits
EDC status register bits
Ready/Busy
Ready/Busy
Write Protect
EDC validity
EDC status
Reserved
Reserved
Pass/Fail
Table 12
Name
for a description of SR5 and SR6 bits.
(1)
(1)
for a full description and
summarizes the EDC Status register bits. See
Logic level
‘Don’t care’ -
‘Don’t care’ -
‘1’
‘0’
‘1’
‘0’
‘1’
‘0’
‘1’
‘0’
‘1’
‘0’
‘1’
‘0’
Copy back or multiplane copy back
operation failed
Copy back or multiplane copy back
operation succeeded
Error
No error
Valid
Invalid
Ready
Busy
Ready
Busy
Not protected
Protected
Figure 30
Definition
for the Read Status
Device operations
Figure 29
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