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Rev. 2.0, 11/00, page 188 of 1037
8.4
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 8.5. For a diagram of the transitions to the various flash memory modes, see figure 8.3.
Table 8.5
Setting On-Board Programming Modes
Mode
Pin
Mode Name
FWE
MD0
P12
P13
P14
Boot mode
1
0
1
*
2
1
*
2
1
*
2
User program mode
1
*
1
1
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.
Содержание Hitachi H8S/2191
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