NAND256-A datasheet(19/57 Pages) STMICROELECTRONICS

Part #	NAND256-A

Description	128 Mbit, 256 Mbit, 512 Mbit, 1 Gbit (x8/x16) 528 Byte/264 Word Page, 1.8V/3V, NAND Flash Memories

PDF	57 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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NAND128-A, NAND256-A, NAND512-A, NAND01G-A

COMMAND SET

All bus write operations to the device are interpret-

ed by the Command Interface. The Commands

are input on I/O0-I/O7 and are latched on the rising

edge of Write Enable when the Command Latch

Enable signal is high. Device operations are se-

lected by writing specific commands to the Com-

mand

The

two-step

command

sequences for program and erase operations are

imposed to maximize data security.

The

Commands

are

summarized

Table

9., Commands.

Table 9. Commands

Note: 1. The bus cycles are only shown for issuing the codes. The cycles required to input the addresses or input/output data are not shown.

2. Any undefined command sequence will be ignored by the device.

Command

Bus Write Operations(1)

Command accepted

during busy

1st CYCLE

2nd CYCLE

3rd CYCLE

Read A

00h

Read B

01h(2)

Read C

50h

Read Electronic Signature

90h

Read Status Register

70h

Yes

Page Program

80h

10h

Copy Back Program

00h

8Ah

10h

Block Erase

60h

D0h

Reset

FFh

Yes

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