LH28F320BJE-PTTL90 Просмотр технического описания (PDF) - Sharp Electronics

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LH28F320BJE-PTTL90

Flash Memory 32M (2M × 16/4M × 8)

Sharp Electronics 

SHARP

LHF32JO2

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10

.5 Read Identifier Codes

he read identifier codes operation outputs the

manufacturer code. device code. block lock configuration

Ides for each block and the permanent lock configuration

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

Ides, the system CPU can automatically match the device

ith its proper algorithms. The block lock and permanent

mck configuration codes identify locked and unlocked

ocks and permanent lock-bit setting.

Top Boa

3FFFFF

3FEOO6

3FEOO5

3FEoo.t

3FEcm3

3FEOOO

3FDFFF

3FCCQ6

3FCOO5

3FCOO.t

3FCCO3

3FCMH)

3FBFFF

IFCFFF;

IF9000 i

(Parameter Blocks 1 through 4)

Reserved for Future Implementation

Parameter Block 5 Lock Confieumtion Code

3FACC-5

3FAOO5

3FAOO.l

3FAOO3

3FACNM

; 3F9FFF

; 3F1000

3FIFFF

3FMW6

3FooOS

3FOOOJ

3FOOO3

3FoooO

3EFFFF

IFOWl

IFOiXQ

~~__~_~^~~~~~-~l~----~---------~~-

Reserved

for Future

Implementr&ion

Main Block

IEFFFF j

008000 i

(Man Blocks 1 throyh 61)

3E0006

3EOOo5

3EOOOJ

3EOCO3

0, 3EMXW)

i 3DFFFF

Reserved forFuture Implementation

000080 1

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(COH). First write OTP Program command and

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

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

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

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

STATUS) bit is set to “1” too.

The OTP block is also locked by writing OTP Program

command(COH). 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 “SOH” means customer

program area lock status. The OTP lock information can

not be cleared, after once it is set.

ooom

Customer Program Area

1 oooO85 1

OOIFFF

1 OOOIOA j

Customer Program Area Lock

Factory Program Area Lock

Figure 5. OTP Block Address Map

Figure 4. Device Identifier Code Memory Map

Rev. 1.35

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