SH7050 Datasheet, PDF(587/841 Page) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH RISC engine Family/

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SH7050 Datasheet, PDF (587/841 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH RISC engine Family/

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Section 18 ROM (128 kB Version)

18.10 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).

18.11 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.

In programmer mode, set the mode pins to PLLx2 mode (see table 18.9) and input a 6 MHz input

clock, so that the SH7050 runs at 12 MHz.

Table 18.9 shows the pin settings for programmer mode. For the pin names in programmer mode,

see section 1.3.3, Pin Assignments.

Table 18.9 PROM Mode Pin Settings

Pin Names

Mode pins: MD3, MD2, MD1, MD0

FWE pin

RES pin

XTAL, EXTAL, PLLVCC, PLLCAP,

PLLV pins

SS

Settings

1101 (PLL Ã 2)

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

modes)

Power-on reset circuit

Oscillator circuit

Rev. 5.00 Jan 06, 2006 page 567 of 818

REJ09B0273-0500

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