upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 401
upd78f0114hgb-8es-a
Manufacturer Part Number
upd78f0114hgb-8es-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0114HGB-8ES-A.pdf
(505 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD78F0114HGB-8ES-A
Manufacturer:
PANASONIC
Quantity:
720
- Current page: 401 of 505
- Download datasheet (3Mb)
(2) Flash protect command register (PFCMD)
(3) Flash status register (PFS)
If the application system stops inadvertently due to malfunction caused by noise or program hang-up, an
operation to write the flash programming mode control register (FLPMC) may have a serious effect on the
system. PFCMD is used to protect FLPMC from being written, so that the application system does not stop
inadvertently.
Writing FLPMC is enabled only when a write operation is performed in the following specific sequence.
<1> Write a specific value to PFCMD (PFCMD = A5H)
<2> Write the value to be set to FLPMC (writing in this step is invalid)
<3> Write the inverted value of the value to be set to FLPMC (writing in this step is invalid)
<4> Write the value to be set to FLPMC (writing in this step is valid)
This rewrites the value of the register, so that the register cannot be written illegally.
Occurrence of an illegal store operation can be checked by bit 0 (FPRERR) of the flash status register (PFS).
A5H must be written to PFCMD each time the value of FLPMC is changed.
PFCMD can be set by an 8-bit memory manipulation instruction.
RESET input makes this register undefined.
If data is not written to the flash programming mode control register (FLPMC), which is protected, in the correct
sequence (writing the flash protect command register (PFCMD)), FLPMC is not written and a protection error
occurs. If this happens, bit 0 of PFS (FPRERR) is set to 1.
This bit is a cumulative flag. After checking FPRERR, clear it by writing 0 to it.
PFS can be set by a 1-bit or 8-bit memory manipulation instruction.
RESET input clears this register to 00H.
Address: FFC0H
Address: FFC2H
PFCMD
Symbol
Symbol
PFS
Figure 23-19. Format of Flash Protect Command Register (PFCMD)
REG7
0
Figure 23-20. Format of Flash Status Register (PFS)
After reset: Undefined
After reset: 00H
REG6
0
CHAPTER 23 FLASH MEMORY
User’s Manual U16961EJ4V0UD
REG5
0
R/W
REG4
0
W
REG3
0
REG2
0
REG1
0
FPRERR
REG0
401
Related parts for upd78f0114hgb-8es-a
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Renesas Technology Corp [Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series]
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
RENESAS MCU M16C FAMILY / M16C/Tiny SERIES
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Renesas Starter Kit for RX210
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
EVALBOARD/Renesas StarterKit for RX630
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
EVALBOARD/Renesas Starter Kit+ for RX63N
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
EVALBOARD/Renesas Starter Kit
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
FLASH PROGRAMMER FOR RENESAS MICROCONTROLLERS
Manufacturer:
Renesas Electronics Corporation.
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Manufacturer:
Renesas Electronics Corporation.
Datasheet: