R5F72115D160FPV datasheet(944/1228 Pages) RENESAS

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Section 21 Flash Memory

Rev. 2.00 May. 08, 2008 Page 920 of 1200

REJ09B0344-0200

21.5

On-Board Programming Mode

When the pin is set in on-board programming mode and the reset start is executed, the on-board

programming state that can program/erase the on-chip flash memory is entered. On-board

programming mode has three operating modes: user program mode, user boot mode, and boot

mode.

For details on the pin setting for entering each mode, see table 21.1. For details on the state

transition of each mode for flash memory, see figure 21.2.

21.5.1

Boot Mode

Boot mode executes programming/erasing user MAT and user boot MAT by means of the control

command and program data transmitted from the host using the on-chip SCI. The tool for

transmitting the control command and program data must be prepared in the host. The SCI

communication mode is set to asynchronous mode. When reset start is executed after this LSI's pin

is set in boot mode, the boot program in the microcontroller is initiated. After the SCI bit rate is

automatically adjusted, the communication with the host is executed by means of the control

command method.

The system configuration diagram in boot mode is shown in figure 21.6. For details on the pin

setting in boot mode, see table 21.1. Interrupts are ignored in boot mode, so do not generate them.

Note that the AUD cannot be used during boot mode operation.

Host

RXD1

TXD1

Control command,

analysis execution

software (on-chip)

Flash

memory

On-chip RAM

On-chip SCIF

This LSI

Boot

programming

tool and program

data

Control command, program data

Reply response

Figure 21.6 System Configuration in Boot Mode

R5F72115D160FPV Datasheet(PDF) 944 Page - Renesas Technology Corp