M58BW016DB datasheet(53/63 Pages) STMICROELECTRONICS

부품명	M58BW016DB

상세설명	16 Mbit 512Kb x32, Boot Block, Burst 3V Supply Flash Memories

PDF	63 Pages

Scroll/Zoom	100%

제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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53 / 63 page

53/63

M58BW016BT, M58BW016BB, M58BW016DT, M58BW016DB

Figure 25. Unlock Device and Change Tuning Protection Code Flowchart

AI04501

Reset

Device locked

by tuning code

1st: Write Cycle

2nd: Write Cycle

(old code,

factory setup = 0xFFFFh)

YES

3rd: Write Cycle

4th: Write Cycle

(old code,

factory setup = 0xFFFFh)

YES

DEVICE LOCKED

Add: don't care

Data: 0x48h

6th: Write Cycle

Add: 0x00000h

Data: First 32 bit

7th: Write Cycle

(new code)

YES

b7 = 1

Add: don't care

Data: 0x48h

8th: Write Cycle

Add: 0x00001h

Data: Second 32 bit

9th: Write Cycle

(new code)

YES

b7 = 1

DEVICE UNLOCKED

Reset

Device locked

by new code

TUNING PROTECTION

UNLOCK SEQUENCE

Add: don't care

Data: 0xFFh

5th: Write Cycle

Issue Read command

Issue

Read

command

Add: don't care

Data: 0x78h

Add: 0x00000h

Data: First 32 bit

b7 = 1

Add: don't care

Data: 0x78h

Add: 0x00001h

Data: Second 32 bit

b7 = 1

Read Status

b0 = 1

Add: don't care

Data: 0xFFh

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