SH7018 datasheet(375/431 Pages) RENESAS

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2. A RAM area cannot be erased by execution of software in accordance with the erase

algorithm while flash memory emulation in RAM is being used.

16.10

Note on Flash Memory Programming/Erasing

In the on-board programming modes (user mode and user program mode), NMI input should be

disabled to give top priority to the program/erase operations (including RAM emulation).

16.11

Flash Memory Programmer Mode

Programs and data can be written and erased in programmer mode as well as in the on-board

programming modes. In programmer mode, flash memory read mode, auto-program mode, auto-

erase mode, and status read mode are supported. In auto-program mode, auto-erase mode, and

status read mode, a status polling procedure is used, and in status read mode, detailed internal

signals are output after execution of an auto-program or auto-erase operation.

Table 16.10 shows the pin settings for programmer mode. For the pin names in programmer mode,

see section 1.3.2, Pin Functions.)

Table 16.10 Programmer Mode Pin Settings

Pin Names

Settings

Mode pins: MD3, MD2, MD1, MD0

MD3 = 1, MD2 = 1, MD1 = 0, MD0 = 1

FWE pin

High level input (in auto-program and auto-erase

modes)

RES pin

Power-on reset circuit

XTAL, EXTAL pins

Oscillator circuit

Note:

In programmer mode, the FWP pin has its polarity reversed and functions as the FWE

(flash write enable) pin.

SH7018 Datasheet(PDF) 375 Page - Renesas Technology Corp