LH28F800BJHE-PBTL90 Ver la hoja de datos (PDF) - Sharp Electronics

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Fabricante

LH28F800BJHE-PBTL90

8M (x8/x16) Flash Memory

Sharp Electronics 

LHF80J05

9

3.5 Read Identifier Codes

The read identifier codes operation outputs the

manufacturer code, device code, block lock configuration

codes for each block and the permanent lock configuration

code (see Figure 4). Using the manufacturer and device

codes, the system CPU can automatically match the device

with its proper algorithms. The block lock and permanent

lock configuration codes identify locked and unlocked

blocks and permanent lock-bit setting.

[A18-A0]

Bottom Boot

[A18-A-1]

7FFFF

78003

78002

78001

78000

77FFF

10000

FFFFF

Reserved for Future Implementation

F0006

Main Block 14 Lock Configuration Code

F0005

F0004

Reserved for Future Implementation

F0003

Main Block 14 F0000

(Main Blocks 1 through 13)

EFFFF

20000

0FFFF

08003

08002

08001

08000

07FFF

07003

07002

07001

07000

06FFF

03000

1FFFF

Reserved for Future Implementation

01006

Main Block 0 Lock Configuration Code

10005

10004

Reserved for Future Implementation

10003

Main Block 0 10000

0FFFF

Reserved for Future Implementation

0E006

Parameter Block 5 Lock Configuration Code

0E005

0E004

Reserved for Future Implementation

0E003

Parameter Block 5 0E000

(Parameter Blocks 1 through 4)

0DFFF

06000

02FFF

02003

02002

02001

02000

01FFF

01003

01002

01001

01000

00FFF

00080

05FFF

Reserved for Future Implementation

04006

Parameter Block 0 Lock Configuration Code

04005

04004

Reserved for Future Implementation

04003

Parameter Block 0 04000

03FFF

Reserved for Future Implementation

02006

Boot Block 1 Lock Configuration Code

02005

02004

Reserved for Future Implementation

02003

Boot Block 1 02000

OTP Block

01FFF

00100

0007F

00004

00003

00002

00001

00000

Reserved for Future Implementation

Permanent Lock Configuration Code

Boot Block 0 Lock Configuration Code

Device Code

Manufacturer Code Boot Block 0

000FF

00008

00007

00006

00005

00004

00003

00002

00001

00000

Figure 4. Device Identifier Code Memory Map

3.6 OTP(One Time Program) Block

The OTP block is a special block that can not be erased.

The block is divided into two parts. One is a factory

program area where a unique number can be written

according to customer requirements in SHARP factory.

This factory program area is "READ ONLY" (Already

locked). The other is a customer program area that can be

used by customers. This customer program area can be

locked. After locking, this customer program area is

protected permanently.

The OTP block is read in Configuration Read Mode by

writing Read Identifier Codes command(90H). To return

to Read Array Mode, write Read Array command(FFH).

The OTP block is programmed by writing OTP Program

command(C0H). First write OTP Program command and

then write data with address to the device (See Figure 5).

If OTP program is failed, SR.4(WORD/BYTE WRITE

AND SET LOCK-BIT STATUS) bit is set to "1". And if

this OTP block is locked, SR.1(DEVICE PROTECT

STATUS) bit is set to "1" too.

The OTP block is also locked by writing OTP Program

command(C0H). First write OTP Program command and

then write data "FFFDH" with address "80H" to the

device. Address "80H" of OTP block is OTP lock

information. Bit 0 of address "80H" means factory

program area lock status("1" is "NOT LOCKED", "0" is

"LOCKED"). Bit 1 of address "80H" means customer

program area lock status. The OTP lock information can

not be cleared, after once it is set.

[A18-A0]

00FFF

Customer Program Area

[A18-A-1]

01FFF

00085

00084

00081

00080

Factory Program Area

OTP Lock

Customer Program Area Lock(Bit 1)

Factory Program Area Lock(Bit 0)

0010A

00109

00102

00100

Figure 5. OTP Block Address Map

Rev. 1.27

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