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H8/3021 Datasheet(PDF) 476 Page - Renesas Technology Corp

Part # H8/3021
Description  16-Bit Single-Chip Microcomputer
PDF  712 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8/3021 Datasheet(HTML) 476 Page - Renesas Technology Corp

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15. ROM
Rev.2.00 Mar. 22, 2007 Page 452 of 684
REJ09B0352-0200
Application program
Flash memory
RAM
SCI
Programming control
program execution state
Overlap RAM
(programming data)
Programming data
Figure 15.4 Writing Overlap RAM Data in User Program Mode
15.2.5
Differences between Boot Mode and User Program Mode
Boot Mode
User Program Mode
Total erase
Yes
Yes
Block erase
No
Yes
Programming control program*
Boot program is initiated,
and programming control
program is transferred
from host to on-chip RAM,
and executed there.
Program that controls
programming program in flash
memory is executed. Program
should be written beforehand in
PROM mode and boot program
mode.
Note:
*
To be provided by the user, in accordance with the recommended algorithm.



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