upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 451

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

mounted on the board.
19.1 Internal Memory Size Switching Register
The
The internal memory capacity can be selected using the internal memory size switching register (IMS).
IMS is set by an 8-bit memory manipulation instruction.
Reset signal generation sets IMS to CFH.
Caution Be sure to set IMS to C4H after a reset release.
Address: FFF0H
Symbol
IMS
µ
PD78F0730 incorporates the flash memory to which a program can be written, erased, and overwritten while
RAM2
RAM2
ROM3
Figure 19-1. Format of Internal Memory Size Switching Register (IMS)
7
1
0
After reset: CFH
Other than above
ROM2
RAM1
RAM1
Other than above
6
1
1
CHAPTER 19 FLASH MEMORY
R/W
Preliminary User’s Manual U19014EJ1V0UD
ROM1
RAM0
RAM0
5
0
0
1024 bytes
Setting prohibited
ROM0
4
0
0
Internal high-speed RAM capacity selection
16 KB
Setting prohibited
ROM3
3
Internal ROM capacity selection
ROM2
2
ROM1
1
ROM0
0
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