upd78f0124hgba1-8et-a Renesas Electronics Corporation., upd78f0124hgba1-8et-a Datasheet - Page 404

• Manufacturer Part Number: upd78f0124hgba1-8et-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

404
Address: FFC4H
Symbol
FLPMC
Figure 24-18. Format of Flash Programming Mode Control Register (FLPMC)
Notes 1. Differs depending on the operation mode.
Cautions 1. Be sure to keep FWEDIS at 0 until writing or erasing of the flash memory
FLSPM1
FWEDIS
FWEPR
0
0
1
0
0
1
1
1
0
Note 4
2. Bit 2 (FWEPR) is read-only.
3. For actual writing/erasing, the FLMD0 pin must be high (FWEPR = 1), as well as
4. The user ROM (flash memory) or firmware ROM can be selected by FLSPM1
After reset: 0×H
FLSPM0
2. Make sure that FWEDIS = 1 in the normal mode.
3. Manipulate FLSPM1 and FLSPM0 after execution branches to the
Writing/erasing enabled
Writing/erasing disabled
Low level
High level
• User mode:
• On-board mode: 0CH
FWEDIS = 0.
and FLSPM0, and the operation mode set on the application system by the
mode pin or the self-programming mode can be selected.
FWEDIS FWEPR
0
1
1
0
0
Other than above
is completed.
internal RAM.
address signal from the CPU when FLSPM1 = 0 or the set value of the
firmware written when FLSPM1 = 1.
specifications of FLSPM1 and FLSPM0 are ignored.
User’s Manual U16962EJ3V0UD
Note 4
0
CHAPTER 24 FLASH MEMORY
Note 3
Normal mode
Self-programming mode A1
Self-programming mode A2
Setting prohibited
Instructions of flash memory can be fetched from all
addresses.
Firmware can be called (CALL #8100H).
Instructions are fetched from firmware ROM.
This mode is set in firmware and cannot be set by the user.
Note 1
0
Selection of operation mode during self-programming
1
Control of flash memory writing/erasing
08H
Note 3
The address of the flash memory is specified by an
R/W
0
Writing/erasing enabled
Writing/erasing disabled
Status of FLMD0 pin
Note 2
Enable or disable of flash memory writing/erasing
FWEDIS
FWEPR
FLSPM1 FLSPM0
In the on-board mode, the