st92f124 STMicroelectronics, st92f124 Datasheet - Page 63

• Manufacturer Part Number: st92f124
• Description: 8/16-bit Single Voltage Flash Mcu Family With Ram, E3 Tmemulated Eeprom, Can 2.0b And J1850 Blpd
• Manufacturer: STMicroelectronics

Figure 35. Test /EPB Mode Protection
Figure 36. Access Mode Protection
Set the
Access Protection Bit
by an OR operation executed
from the Memory
to unprotect
ST92F124/F150/F250 - SINGLE VOLTAGE FLASH & E3 TM (EMULATED EEPROM)
Password
Good
Access Mode
Unprotected
1st
Bad Password
Good
Password
Reset the Access Protection bit
by a Set Protection Operation
Test/EPB Mode
Test/EPB Mode
Test/EPB Mode
Test/EPB Mode
Unprotected
Protected
Protected
Protected
Access Mode
Protected
3rd Bad Password
Access Mode
Temporarily
Unprotected
Bad Password
2nd
Bad
Password
executed from RAM
Password
Good
SW/HW
Reset
Good
PassWord
NVAPR
Read
Access
Test/EPB Mode
Unprotected
Reset the
Access Protection bit
Executed from RAM
by a Set Protection
Operation
Bad Password
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