ACE25AA128GFMLTH datasheet(13/71 Pages) ACE

13 / 71 page

ACE25AA128G

Serial NOR Flash Memory

128 Megabits 3.0V Quad I/O Serial Flash Memory with 4KB Uniform Sector

VER 1.1

See Table2, every command sequence starts with a one-byte command code. Depending on the

command, this might be followed by address bytes, or by data bytes, or by both or none. CS# must be

driven high after the last bit of the command sequence has been shifted in. For the command of Read,

Fast Read, Read Status Register, and Read Device ID, the shifted-in command sequence is followed by a

data-out sequence. CS# can be driven high after any bit of the data-out sequence is being shifted out.

For the command of Page Program, Sector Erase, Block Erase, Chip Erase, Write Status Register, Write

Enable, Write Disable, CS# must be driven high exactly at a byte boundary, otherwise the command is

rejected. That is CS# must driven high when the number of clock pulses after CS# being driven low is an

exact multiple of eight. For Page Program, if at any time the input byte is not a full byte, nothing will

happen and WEL will not be reset.

Table2. Commands

Command Name

Byte1

Byte2

Byte3

Byte4

Byte5

Byte6

n-Bytes

Write Enable

06H

Write Enable for

Volatile Status

50H

Write Disable

04H

Read Status

05H

(S7-S0)

(continuous)

Read Status

35H

(S15-S8)

(continuous)

Write Status

01H

(S7-S0)

(S15-S8)

(continuous)

Read Data

03H

A23-A16

A15-A8

A7-A0

(D7-D0)

(Next byte) (continuous)

Fast Read

0BH

A23-A16

A15-A8

A7-A0

dummy

(D7-D0)

(continuous)

Dual Output Fast

Read

3BH

A23-A16

A15-A8

A7-A0

dummy

(D7-D0)(1) (continuous)

Dual I/O Fast Read

BBH

A23-A8(2)

A7-A0

M7-M0(2)

(D7-D0)(1)

(continuous)

Quad Output Fast

Read

6BH

A23-A16

A15-A8

A7-A0

dummy

(D7-D0)(3) (continuous)

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