r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 682

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
26.6
26.6.1
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 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 programmer
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 26.8 lists the Pin Functions (Flash Memory Standard Serial I/O Mode 2) and Figure 26.17 shows Pin
Handling in Standard Serial I/O Mode 2. Table 26.9 lists the Pin Functions (Flash Memory Standard Serial I/O
Mode 3) and Figure 26.18 shows Pin Handling in Standard Serial I/O Mode 3.
After handling the pins shown in Table 26.8 and rewriting the flash memory using the programmer, apply a high-
level signal to the MODE pin and reset the hardware to run a program in the flash memory in single-chip mode.
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 5.3 ID Code Area for details on the ID code check function.
Standard Serial I/O Mode
ID Code Check Function
Preliminary document
Specifications in this document are tentative and subject to change.
26. Flash Memory
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