5

= Pulse input. See DC Characteristics for voltage levels.

Notes: 1.Manufacturer and device codes may also be accessed via a command register write sequence. See

Table 7.

2.Refer to the section on Sector Protection.

±10%

Table 3

Operation (5)

OE

WE

RESET

Auto-Select Manufacture’s

Code (1)

HL

L

H

L

LLL

Code

H

LH

Auto-Select Device Code (1)

HL

LH

L

H

L

L

Code

H

LH

Read (3)

HL

LH

H

LH

Full Standby

H

H

X

X

X

X

X

X

X

HIGH-Z

H

Output Disable

X

X

H

H

X

X

X

X

X

HIGH-Z

H

Write (Program/Erase)

HL

HL

H

LH

Enable Sector Protection

(2), (4)

HL

LL

H

L

XH

LH

Verify Sector Protection

(2), (4)

HL

LH

L

L

HL

Code

H

LH

Temporary Sector

Unprotection

XXXX

X

X

XXX

X

Reset (Hardware)/Standby

X

X

X

X

X

X

X

X

X

HIGH-Z

L