NAND01G-B2C datasheet(34/67 Pages) NUMONYX

Part #	NAND01G-B2C

Description	1-Gbit, 2112-byte/1056-word page, 1.8 V/3 V, single level cell NAND flash memory

PDF	67 Pages

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Manufacturer	NUMONYX [Numonyx B.V]

Direct Link	http://www.numonyx.com

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Device operations

NAND01G-B2C

34/67

6.9

Read ONFI signature

To recognize NAND flash devices that are compatible with ONFI 1.0 command set, the

Read Electronic Signature command can be issued, followed by an address of 20h. The

next four-byte output is the ONFI signature, which is the ASCII encoding of the ‘ONFI’ word.

Reading beyond four bytes produces indeterminate values. The device remains in this state

until a new command is issued.

Figure 16 describes the read ONFI signature waveforms and Table 15 defines the output

bytes.

Table 14.

Electronic signature byte/word 4

I/O

Definition

Value

Description

I/O1-I/O0

Page size

(without spare area)

0 0

0 1

1 0

1 1

1Kbyte

2Kbytes

Reserved

I/O2

Spare area size

(byte / 512-byte)

I/O3

Minimum sequential

access time

50 ns

30 ns

I/O5-I/O4

Block size

(without spare area)

0 0

0 1

1 0

1 1

64 Kbytes

128 Kbytes

256 Kbytes

Reserved

I/O6

Organization

x16

I/O7

Not used

Reserved

Table 15.

Read ONFI signature

Byte

Value

ASCII character

1st byte

4Fh

2nd byte

4Eh

3rd byte

46h

4th byte

49h

5th byte

Undefined

NAND01G-B2C Datasheet(PDF) 34 Page - Numonyx B.V

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