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Section 6 ROM
Rev. 6.00 Sep 12, 2006 page 104 of 526
REJ09B0326-0600
6.2 PROM
Mode
6.2.1
Setting to PROM Mode
If the on-chip ROM is PROM, setting the chip to PROM mode stops operation as a
microcontroller and allows the PROM to be programmed in the same way as the standard
HN27C256 EPROM. Table 6.1 shows how to set the chip to PROM mode.
Table 6.1
Setting to PROM Mode
Pin Name
Setting
TEST High
level
PB
4
/AN
4
Low
level
PB
5
/AN
5
PB
6
/AN
6
High
level
6.2.2 Memory
Map
Figure 6.2 shows a memory map.
On-chip PROM
H'0000
H'7FFF
H'0000
H'7FFF
Address in
MCU mode
Address in
PROM mode
Figure 6.2 H8/3644 Memory Map in PROM Mode
When programming with a PROM programmer, be sure to specify addresses from H'0000 to
H'7FFF.
Summary of Contents for F-ZTAT H8/3642A Series
Page 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Page 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
Page 22: ...Rev 6 00 Sep 12 2006 page xx of xx ...
Page 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Page 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Page 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Page 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Page 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Page 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...