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17.4
On-Board Programming Mode
When pins are set to on-board programming mode and a reset-start is executed, the chip enters the
on-board programming state in which on-chip flash memory programming, erasing, and verifying
can be carried out. There are two operating modes in this mode—boot mode and user program
mode—set by the mode pins (MD
mode are shown in table 17.6. Boot mode and user program mode cannot be used in mode 6 (on-
chip ROM enabled) in the H8/3062F-ZTAT and the H8/3062F-ZTAT R-mask version. For notes
on FWE pin application and disconnection, see section 17.9, Flash Memory Programming and
Erasing Precautions.
Table 17.6 On-Board Programming Mode Settings
Mode
Boot mode
User program mode
Notes: *1 For the High level input timing, see items 6 and 7 of Notes on Using the Boot Mode.
*2 In boot mode, the MD
In boot mode in the H8/3062F-ZTAT and the H8/3062F-ZTAT R-mask version, the
values in mode select bits 2 to 0 (MDS2 to MDS0) in the mode control register (MDCR)
are the inverse of the levels at the mode pins (MD
differs from that for H8/300H Series microcomputer H8/3039F-ZTAT.
490
–MD
) and the FWE pin. The pin settings for entering each
2
0
FWE
1
1 *
Mode 5
Mode 7
Mode 5
Mode 7
setting should be the inverse of the input.
2
MD
MD
MD
2
1
2
0 *
0
1
2
0 *
1
1
1
0
1
1
1
1
to MD
2
Notes
0
0: V
IL
1: V
IH
). Note that this specification
0
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