M50FW080 datasheet(14/56 Pages) STMICROELECTRONICS

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Signal descriptions

M50FW080

14/55

2.1.10

Write Protect (WP)

The Write Protect input is used to prevent the Main Blocks (Blocks 0 to 14) from being

changed. When Write Protect, WP, is set Low, VIL, Program and Block Erase operations in

the Main Blocks have no effect, regardless of the state of the Lock Register. When Write

Protect, WP, is set High, VIH, the protection of the Block determined by the Lock Register.

The state of Write Protect, WP, does not affect the protection of the Top Block (Block 15).

Write Protect, WP, must be set prior to a Program or Block Erase operation is initiated and

must not be changed until the operation completes or unpredictable results may occur. Care

should be taken to avoid unpredictable behavior by changing WP during Program or Erase

Suspend.

2.1.11

Reserved for Future Use (RFU)

These pins do not have assigned functions in this revision of the part. They must be left

disconnected.

Table 3.

Block addresses

Size

(Kbytes)

Address Range

Block Number

Block Type

F0000h-FFFFFh

Top Block

E0000h-EFFFFh

Main Block

D0000h-DFFFFh

Main Block

C0000h-CFFFFh

Main Block

B0000h-BFFFFh

Main Block

A0000h-AFFFFh

Main Block

90000h-9FFFFh

Main Block

80000h-8FFFFh

Main Block

70000h-7FFFFh

Main Block

60000h-6FFFFh

Main Block

50000h-5FFFFh

Main Block

40000h-4FFFFh

Main Block

30000h-3FFFFh

Main Block

20000h-2FFFFh

Main Block

10000h-1FFFFh

Main Block

00000h-0FFFFh

Main Block

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