The following restrictions apply when reading data from the flash memory of a Renesas microcontroller.
| Definition Program | Device Series | Restrictions | Solution |
| FHX808 | H8S | ・When using the boot mode of the microcontroller, the flash memory is completely erased and cannot be read. | ・Due to the device specifications, reading is not possible. |
| FHX819 | SH | ・When using the boot mode of the microcontroller, the flash memory is completely erased and cannot be read. | ・Due to the device specifications, reading is not possible. |
| FHX820 | SH | ・When using the boot mode of the microcontroller, the flash memory is completely erased and cannot be read. | ・Due to the device specifications, reading is not possible. |
| FRX802 | R8C/2x | ・If ID authentication does not match, reading is not possible | ・Use a KEY file that matches the ID data when programming. |
| FRX805 | R8C/3x | ・If ID authentication does not match, reading is not possible | ・Use a KEY file that matches the ID data when programming. |
| FRX816 | M16C | ・If ID authentication does not match, reading is not possible | ・Use a KEY file that matches the ID data when programming. |
| FLX818 | M32R | ・If ID authentication does not match, reading is not possible | ・Use a KEY file that matches the ID data when programming. |
| FNX820 | V850 | ・If security is set to read-prohibited, reading is not possible. | ・If you want to read after programming, do not set security to prohibit reading. |
| FNX859 | 78K0 | ・Reading is not possible because there is no reading function in flash programming mode. | ・Due to the device specifications, reading is not possible. |
| FNX860 | V850E2 | ・If security is set to read-prohibited, reading is not possible. | ・If you want to read after programming, do not set security to prohibit reading. |
| FNX861 | V850E2 | ・If security is set to read-prohibited, reading is not possible. | ・If you want to read after programming, do not set security to prohibit reading. |
| FRX821 | RX210 RX621 RX62T RX630 RX63N | ・If ID authentication is enabled, reading is not possible unless ID authentication matches.(Control code 52h and ID code other than 50h(P), 72h(r), 6Fh(o), 74h(t), 65h(e), 63h(c), 74h(t), FFh, ..., FFh) ・If the setting results in a mismatch regardless of whether ID authentication is successful or not, reading is not possible.(Control code 52h and ID code 50h(P), 72h(r), 6Fh(o), 74h(t), 65h(e), 63h(c), 74h(t), FFh, ..., FFh) ・If ID authentication is enabled, reading is not possible unless ID authentication matches. If ID authentication fails three times in a row, the flash memory will be completely erased and future reading will be impossible.(Control code 45h) ・If ID authentication is disabled (using a control code other than the above), the flash memory will be completely erased and will be unreadable. | ・Use a KEY file that matches the ID data when programming. ・When reading after programming, do not set control code 52h and ID code 50h(P), 72h(r), 6Fh(o), 74h(t), 65h(e), 63h(c), 74h(t), FFh, ..., FFh. |
| FRX822 | RX24T | ・If ID authentication is enabled, reading is not possible unless ID authentication matches(Control code 52h and ID code other than 50h(P), 72h(r), 6Fh(o), 74h(t), 65h(e), 63h(c), 74h(t), FFh, ..., FFh) ・If the setting results in a mismatch regardless of whether ID authentication is successful or not, reading is not possible.(Control code 52h and ID code 50h(P), 72h(r), 6Fh(o), 74h(t), 65h(e), 63h(c), 74h(t), FFh, ..., FFh) ・If ID authentication is enabled, reading is not possible unless ID authentication matches. If ID authentication fails three times in a row, the flash memory will be completely erased and future reading will be impossible.(Control code 45h) ・If ID authentication is disabled (using a control code other than the above), the flash memory will be completely erased and will be unreadable. | ・Use a KEY file that matches the ID data when programming. ・When reading after programming, do not set control code 52h and ID code 50h(P), 72h(r), 6Fh(o), 74h(t), 65h(e), 63h(c), 74h(t), FFh, ..., FFh. |
| FRX823 | RX651 RX65N | ・If the flash programmer connection is prohibited, reading is not possible. ・If ID authentication is enabled, reading is not possible unless ID authentication matches(Control code other than 45h) ・If ID authentication is enabled, reading is not possible unless ID authentication matches. If ID authentication fails three times in a row, the flash memory will be completely erased and future reading will be impossible.(Control code 45h) | ・If you want to read after programming, do not prohibit the serial programmer connection. ・Use a KEY file that matches the ID data when programming. |
| FRX824 | RX66T | ・If the flash programmer connection is prohibited, reading is not possible. ・In ID authentication mode, reading is not possible unless the ID authentication matches ・If the security setting is set to read-prohibited in command protection mode, reading is not possible. | ・If you want to read after programming, do not prohibit the serial programmer connection. ・Use the YDD file that matches the authentication ID at the time of programming. ・If you want to read after programming, do not set security to prohibit reading. |
| FRX830 | RH850 | ・If the flash programmer connection is prohibited, reading is not possible. ・In ID authentication mode, reading is not possible unless the ID authentication matches ・If the security setting is set to read-prohibited in command protection mode, reading is not possible. | ・If you want to read after programming, do not prohibit the serial programmer connection. ・Use the YDD file that matches the authentication ID at the time of programming. ・If you want to read after programming, do not set security to prohibit reading. |
| FRX830-S10 | RH850 | ・If the flash programmer connection is prohibited, reading is not possible. ・In ID authentication mode, reading is not possible unless the ID authentication matches ・If the security setting is set to read-prohibited in command protection mode, reading is not possible. ・The secure area of data flash cannot be read. | ・If you want to read after programming, do not prohibit the serial programmer connection. ・Use the YDD file that matches the authentication ID at the time of programming. ・If you want to read after programming, do not set security to prohibit reading. |
| FRX830-S20 | RH850 | ・If the flash programmer connection is prohibited, reading is not possible. ・In ID authentication mode, reading is not possible unless the ID authentication matches ・If the security setting is set to read-prohibited in command protection mode, reading is not possible. ・The secure areas of code flash and data flash cannot be read. | ・If you want to read after programming, do not prohibit the serial programmer connection. ・Use the YDD file that matches the authentication ID at the time of programming. ・If you want to read after programming, do not set security to prohibit reading. |
| FRX833 | RH850/U2x | ・If ID authentication does not match, reading is not possible | ・Use the YID file that matches the data in the YDD file when programming. |
| FRX833-S20 | RH850/U2x | ・If ID authentication does not match, reading is not possible ・The secure areas of code flash and data flash cannot be read. | ・Use the YID file that matches the data in the YDD file when programming. |
| FRX840 | Synergy | ・If an OCD/serial programmer ID is set, reading is not possible unless the ID authentication matches. | ・Use the YCR file that matches the data in the YDD file when programming. |
| FRX850 | RL78 | ・Reading is not possible because there is no reading function in flash programming mode. | ・Due to the device specifications, reading is not possible. |
| FRX852 | RL78 | ・Reading is not possible because there is no reading function in flash programming mode. | ・Due to the device specifications, reading is not possible. |
| FRX853 | RL78 | ・Reading is not possible because there is no reading function in flash programming mode. | ・Due to the device specifications, reading is not possible. |
| FRX853-S10 | RL78 | ・Reading is not possible because there is no reading function in flash programming mode. | ・Due to the device specifications, reading is not possible. |