D12320VF25V Datasheet, PDF (683/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 17 ROM
17.15 On-Board Programming Modes
When pins are set to on-board programming mode, program/erase/verify operations can be
performed on the on-chip flash memory. There are two on-board programming modes: boot mode
and user program mode. The pin settings for transition to each of these modes are shown in table
17.30. For a diagram of the transitions to the various flash memory modes, see figure 17.34.
Table 17.30 Setting On-Board Programming Modes
Modes
Pins
MCU Mode
CPU Operating Mode
MD2
MD1
MD0
Boot mode
Advanced expanded mode with 0
1
0
on-chip ROM enabled
Advanced single-chip mode
1
User program mode^* Advanced expanded mode with 1
1
0
on-chip ROM enabled
Advanced single-chip mode
1
Note: * Normally, user mode should be used. Set the SWE bit to 1 to make a transition to user
program mode before performing a program/erase/verify operation.
Rev.7.00 Feb. 14, 2007 page 649 of 1108
REJ09B0089-0700