M-V850E-IA4 Renesas Electronics America, M-V850E-IA4 Datasheet - Page 731

• Manufacturer Part Number: M-V850E-IA4
• Description: KIT EVAL V850E IA4 UPD70F3186
• Manufacturer: Renesas Electronics America

Specifications of M-V850E-IA4

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21.1.3 ROM security function
(1) Security ID
Caution When the data in the flash memory has been deleted, all the bits are set to 0xFF.
The flash memory versions of the V850E/IA3 and V850E/IA4 perform authentication using a 10-byte ID code to
prevent the contents of the flash memory from being read by an unauthorized person during on-chip debugging
by the on-chip debug emulator.
Set the ID code in the 10-byte on-chip flash memory area from 0000070H to 0000079H to allow the debugger
perform ID authentication.
If the IDs match, the security is released and reading flash memory and using the on-chip debug emulator are
enabled.
• Set the 10-byte ID code to 0000070H to 0000079H.
• Bit 7 of 0000079H is the on-chip debug emulator enable flag.
• When the on-chip debug emulator is started, the debugger requests ID input. When the ID code input on the
• Debugging cannot be performed if the on-chip debug emulator enable flag is 0, even if the ID codes match.
(0: Disable, 1: Enable)
debugger and the ID code set in 0000070H to 0000079H match, the debugger starts.
Therefore, ID code is FFFFFFFFFFFFFFFFFFFFH.
CHAPTER 21 ON-CHIP DEBUG FUNCTION (ON-CHIP DEBUG UNIT)
0 0 0 0 0 7 9 H
0 0 0 0 0 7 0 H
0 0 0 0 0 0 0 H
User’s Manual U16543EJ4V0UD
Security ID
(10 bytes)
729