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H8/3028F Datasheet(PDF) 621 Page - Renesas Technology Corp

Part # H8/3028F
Description  Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
PDF  923 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8/3028F Datasheet(HTML) 621 Page - Renesas Technology Corp

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Rev. 2.00, 09/03, page 591 of 890
18.5
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. The pin settings for entering each mode are shown in table 18.6. For a diagram of the
transitions to the various flash memory modes, see figure 18.2.
Boot mode and user program mode cannot be used in the H8/3028F-ZTAT’s mode 6 (on-chip
ROM enabled).
Table 18.6 On-Board Programming Mode Settings
Mode
FWE
MD2
MD1
MD0
Boot mode
Mode 5
1*
1
0*
2
01
Mode 7
0*
2
11
User program mode
Mode 5
1
0
1
Mode 7
1
1
1
Notes: 1. For the High level input timing, see items 6 and 7 of Notes on Use of Boot Mode.
2. In boot mode, the MD2 setting should be the inverse of the input.
In the boot mode in the H8/3028F-ZTAT, the levels of the mode pins (MD2 to MD0) are
reflected in mode select bits 2 to 0 (MDS2 to MDS0) in the mode control register
(MDCR).



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