r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 693
r5f21346mnfp
Manufacturer Part Number
r5f21346mnfp
Description
Single-chip Mcus Incorporates The R8c Cpu Core
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R5F21346MNFP.pdf
(776 pages)
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R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
32.5
32.5.1
In standard serial I/O mode, a serial programmer which supports the MCU can be used to rewrite the user ROM
area while the MCU is mounted on-board.
There are three types of standard serial I/O modes:
•
•
•
Standard serial I/O mode 2 and standard serial I/O mode 3 can be used for the MCU.
Refer to Appendix 2. Connection Examples between Serial Programmer and On-Chip Debugging Emulator
for examples of connecting to a serial programmer. Contact the serial programmer manufacturer for more
information. Refer to the user’s manual included with your serial programmer for instructions.
Table 32.7 lists the Pin Functions (Flash Memory Standard Serial I/O Mode 2) and Figure 32.18 shows Pin
Handling in Standard Serial I/O Mode 2. Table 32.8 lists the Pin Functions (Flash Memory Standard Serial I/O
Mode 3) and Figure 32.19 shows Pin Handling in Standard Serial I/O Mode 3.
After handling the pins shown in Table 32.8 and rewriting the flash memory using the programmer, apply a “H”
level signal to the MODE pin and reset the hardware to run a program in the flash memory in single-chip mode.
Standard serial I/O mode 1 .................Clock synchronous serial I/O used to connect to a serial programmer
Standard serial I/O mode 2 .................Clock asynchronous serial I/O used to connect to a serial programmer
Standard serial I/O mode 3 .................Special clock asynchronous serial I/O used to connect to a serial
The ID code check function determines whether the ID codes sent from the serial programmer and those written
in the flash memory match.
Refer to 12. ID Code Areas for details of the ID code check.
Standard Serial I/O Mode
ID Code Check Function
programmer
32. Flash Memory
Page 661 of 740
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