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ST92F120/F124/150/F250 TESTFLASH

2.1 VECTOR TABLE

The first 16 words of the TestFlash contain the Vector Table.

The Power-On Vector is read when exiting from Reset. The Monitor Vector is read in Em-

bedded Emulation Mode after an ETRAP instruction or an external Break. The NMI Vector is

read if a Non Maskable Interrupt occurs. The SCI Interrupt Vectors are used for the In-System

Programming routine.

Figure 2. Vector Table

2.1.1 Device identifier

This identifier contains the information about the device, its flash size and its reset vector lo-

cation.

2.1.2 Testflash code revision

The CheckSum is the sum of all the bytes from 230000h to 230E77h, it can be used to verify

if the actual TestFlash content is the most recent one, or if the TestFlash content is corrupted.

2.2 USER OTP AREA

The 124 bytes of TestFlash from 231F80h to 231FFBh are available to the User application as

One Time Programmable area (not erasable).

rev 2.6

rev 2.7

rev 2.7.1

Device

Flash

size

Device ID

(230008h)

TF rev

(23000

Ah)

Testflash

checksum

TF rev

(23000

Ah)

Testflash

checksum

TF rev

(23000

Ah)

Testflash

checksum

ST92F124/F150

64K

1024h

xx26h

933BFh

xx27h

8FC55h

0127h

8FBEBh

ST92F124/F150

128K

1080h

xx26h

9341Bh

xx27h

8FCB1h

0127h

8FC47h

ST92F250

256K

1100h

xx26h

9339Ch

xx27h

8FC32h

0127h

8FBC8h

230000h

230002h

Vector Table

Power-On Vector

Monitor Vector

230004h

NMI Vector

230006h

Mask Set Number

230010h

SCI Error Vector

230012h

230014h

230016h

SCI Address Match Vector

SCI Receiving End Vector

SCI Transmitting End Vector

230008h

Device Identifier

23000Ah

TestFlash Code Revision