AT49BV160D 查看數據表（PDF） - Atmel Corporation

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AT49BV160D

16-megabit (1M x 16) 3-volt Only Flash Memory

Atmel Corporation 

AT49BV160D(T)

Table 4-2.

VPP

VCC/5V

VCC/5V

VCC/5V

VCC/5V

VCC/5V

VCC/5V

VCC/5V

VIL

Hardlock and Softlock Protection Configurations in Conjunction with WP

Erase/

Hard-

Soft-

Prog

WP

lock

lock

Allowed?

Comments

0

0

0

Yes

No sector is locked

0

0

1

No

Sector is Softlocked. The Unlock command can

unlock the sector.

0

1

1

No

Hardlock protection mode is enabled. The sector

cannot be unlocked.

1

0

0

Yes

No sector is locked.

1

0

1

No

Sector is Softlocked. The Unlock command can

unlock the sector.

1

1

0

Yes

Hardlock protection mode is overridden and the

sector is not locked.

1

1

1

No

Hardlock protection mode is overridden and the

sector can be unlocked via the Unlock command.

x

x

x

No

Erase and Program Operations cannot be

performed.

Figure 4-1. Sector Locking State Diagram

UNLOCKED

LOCKED

WP = VIL = 0

[000]

60h/

D0h

60h/2Fh

60h/01h

[001]

60h/

2Fh

Power-Up/Reset

Default

[011]

Hardlocked

WP = VIH = 1

[110]

[100]

60h/D0h

60h/

D0h

60h/

01h

[111]

Hardlocked is disabled by

WP = VIH

60h/

2Fh

60h/

2Fh

Power-Up/Reset

Default

60h/

01h

[101]

60h/D0h = Unlock Command

60h/01h = Softlock Command

60h/2Fh = Hardlock Command

Note: 1. The notation [X, Y, Z] denotes the locking state of a sector. The current locking state of a sector is defined by the state of WP

and the two bits of the sector-lock status D[1:0].

7

3591C–FLASH–6/06

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