Datasheet
Table Of Contents
- Notes regarding these materials
- General Precautions in the Handling of MPU/MCU Products
- How to Use This Manual
- Table of Contents
- Quick Reference by Address B-
- 1. Overview
- 2. Central Processing Unit (CPU)
- 2.1 Data Registers (R0, R1, R2 and R3)
- 2.2 Address Registers (A0 and A1)
- 2.3 Frame Base Register (FB)
- 2.4 Interrupt Table Register (INTB)
- 2.5 Program Counter (PC)
- 2.6 User Stack Pointer (USP) and Interrupt Stack Pointer (ISP)
- 2.7 Static Base Register (SB)
- 2.8 Flag Register (FLG)
- 2.8.1 Carry Flag (C Flag)
- 2.8.2 Debug Flag (D Flag)
- 2.8.3 Zero Flag (Z Flag)
- 2.8.4 Sign Flag (S Flag)
- 2.8.5 Register Bank Select Flag (B Flag)
- 2.8.6 Overflow Flag (O Flag)
- 2.8.7 Interrupt Enable Flag (I Flag)
- 2.8.8 Stack Pointer Select Flag (U Flag)
- 2.8.9 Processor Interrupt Priority Level (IPL)
- 2.8.10 Reserved Area
- 3. Memory
- 4. Special Function Registers (SFRs)
- 5. Reset
- 6. Processor Mode
- 7. Clock Generation Circuit
- 8. Protection
- 9. Interrupt
- 10. Watchdog Timer
- 11. DMAC
- 12. Timer
- 13. Serial I/O
- 14. A/D Converter
- 15. CRC Calculation Circuit
- 16. Programmable I/O Ports
- 16.1 Port Pi Direction Register (PDi Register, i = 1, 6 to 10)
- 16.2 Port Pi Register (Pi Register, i = 1, 6 to 10)
- 16.3 Pull-up Control Register 0 to Pull-up Control Register 2 (PUR0 to PUR2 Registers)
- 16.4 Port Control Register
- 16.5 Pin Assignment Control register (PACR)
- 16.6 Digital Debounce function
- 17. Flash Memory Version
- 17.1 Flash Memory Performance
- 17.2 Memory Map
- 17.3 Functions To Prevent Flash Memory from Rewriting
- 17.4 CPU Rewrite Mode
- 17.5 Register Description
- 17.6 Precautions in CPU Rewrite Mode
- 17.6.1 Operation Speed
- 17.6.2 Prohibited Instructions
- 17.6.3 Interrupts
- 17.6.4 How to Access
- 17.6.5 Writing in the User ROM Space
- 17.6.6 DMA Transfer
- 17.6.7 Writing Command and Data
- 17.6.8 Wait Mode
- 17.6.9 Stop Mode
- 17.6.10 Low Power Consumption Mode and On-chip Oscillator-Low Power Consumption Mode
- 17.7 Software Commands
- 17.8 Status Register
- 17.9 Standard Serial I/O Mode
- 17.10 Parallel I/O Mode
- 18. Electrical Characteristics
- 19. Usage Notes
- 19.1 SFR
- 19.2 PLL Frequency Synthesizer
- 19.3 Power Control
- 19.4 Protect
- 19.5 Interrupts
- 19.6 DMAC
- 19.7 Timer
- 19.8 Serial I/O
- 19.9 A/D Converter
- 19.10 Programmable I/O Ports
- 19.11 Electric Characteristic Differences Between Mask ROM
- 19.12 Mask ROM Version
- 19.13 Flash Memory Version
- 19.13.1 Functions to Inhibit Rewriting Flash Memory
- 19.13.2 Stop mode
- 19.13.3 Wait mode
- 19.13.4 Low power dissipation mode, on-chip oscillator low power dissipation mode
- 19.13.5 Writing command and data
- 19.13.6 Program Command
- 19.13.7 Operation speed
- 19.13.8 Instructions prohibited in EW0 Mode
- 19.13.9 Interrupts
- 19.13.10 How to access
- 19.13.11 Writing in the user ROM area
- 19.13.12 DMA transfer
- 19.13.13 Regarding Programming/Erasure Times and Execution Time
- 19.13.14 Definition of Programming/Erasure Times
- 19.13.15 Flash Memory Version Electrical Characteristics 10,000 E/W cycle product
- 19.13.16 Boot Mode
- 19.14 Noise
- 19.15 Instruction for a Device Use
- Appendix 1. Package Dimensions
- Appendix 2. Functional Difference
- Register Index
- REVISION HISTORY
17. Flash Memory Version
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17.5 Register Description
Figure 17.5.1 shows the flash memory control register 0 and flash memory control register 1. Figure 17.5.2
shows the flash memory control register 4.
17.5.1 Flash memory control register 0 (FMR0)
•FMR 00 Bit
This bit indicates the operation status of the flash memory. The bit is “0” during programming, erasing,
or erase-suspend mode; otherwise, the bit is “1”.
•FMR01 Bit
The microcomputer enables to acknowledge commands by setting the FMR01 bit to “1” (CPU rewrite
mode). To set this bit to “1”, it is necessary to set to “1” after first setting to “0”. Set this bit to “0” by only
writing “0”.
•FMR02 Bit
The combined setting of the FMR02 bit and the FMR16 bit enable to program and erase in the user
ROM area. See Table 17.5.2.1 for setting details. To set this bit to “1”, it is necessary to set to “1” after
first setting to “0”. Set this bit to “0” by only writing “0”. This bit is enabled only when the FMR01 bit is
“1” (CPU rewrite mode enable).
•FMSTP Bit
This bit resets the flash memory control circuits and minimizes power consumption in the flash
memory. Access to the flash memory is disabled when the FMSTP bit is set to “1”. Set the FMSTP bit
by a program in a space other than the flash memory.
Set the FMSTP bit to “1” if one of the following occurs:
•A flash memory access error occurs during erasing or programming in EW0 mode (FMR00 bit does
not switch back to “1” (ready)).
•Low-power consumption mode or on-chip oscillator low-power consumption mode is entered.
Figure 17.5.1.3 shows a flow chart illustrating how to start and stop the flash memory before and after
entering low power mode. Follow the procedure on this flow chart.
To enter stop or wait mode when CPU rewrite mode is disabled, do not set the FMR0 register. The
flash memory is automatically turned off when entering and turned back on when exiting.
•FMR06 Bit
This is a read-only bit indicating an auto-program operation status. This bit is set to “1” when a pro-
gram error occurs; otherwise, it is set to “0”. For details, refer to 17.8.4 Full Status Check.
•FMR07 Bit
This is a read-only bit indicating an auto-erase operation status. The bit is set to “1” when an erase
error occurs; otherwise, it is set to “0”. For details, refer to 17.8.4 Full Status Check.
Figure 17.5.1.1 shows a EW0 mode set/reset flowchart, figure 17.5.1.2 shows a EW1 mode set/reset
flowchart.