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7.4
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
7.4. For a diagram of the transitions to the various flash memory modes, see figure 7.3.
Table 7.4
Setting On-Board Programming Modes
Mode
Mode Name
Boot mode
User program mode
Notes: 1. In user program mode, the FWE pin should not be constantly set to 1. Set FWE to 1 to
make a transition to user program mode before performing a program/erase/verify
operation.
2. Can be used as I/O ports after boot mode is initiated.
Rev. 1.0, 02/00, page 140 of 1141
Pin
FWE
MD0
1
0
*1
1
1
P12
P13
*2
*2
1
1
P14
*2
1
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