ST92F124R1 STMicroelectronics, ST92F124R1 Datasheet - Page 64

• Manufacturer Part Number: ST92F124R1
• Description: 8/16-bit Single Voltage Flash Mcu Family With Ram, E?? Emulated Eeprom , Can 2.0b And J1850 Blpd
• Manufacturer: STMicroelectronics

ST92F124/F150/F250 - SINGLE VOLTAGE FLASH & E3 TM (EMULATED EEPROM)
Figure 35. Test /EPB Mode Protection
Figure 36. Access Mode Protection
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9
Set the
Access Protection Bit
by an OR operation executed
from the Memory
to unprotect
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