HD6432138SW datasheet(682/1061 Pages) RENESAS

Part #	HD6432138SW

Description	Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series

PDF	1061 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

Logo

682 / 1061 page

Section 22 ROM (H8S/2138 F-ZTAT A-Mask Version, H8S/2134 F-ZTAT A-Mask Version)

Rev. 4.00 Jun 06, 2006 page 628 of 1004

REJ09B0301-0400

22.4.3

Flash Memory Operating Modes

Mode Transitions: When the mode pins are set in the reset state and a reset-start is executed, the

MCU enters one of the operating modes shown in figure 22.3. In user mode, flash memory can be

read but not programmed or erased.

Flash memory can be programmed and erased in boot mode, user program mode, and programmer

mode.

Boot mode

On-board programming mode

User

program mode

User mode with

on-chip ROM

enabled

Reset state

Programmer

mode

RES = 0

SWE = 1

SWE = 0

Notes: Only make a transition between user mode and user program mode when the CPU is

not accessing the flash memory.

1. MD0 = MD1 = 0, P92 = P91 = P90 = 1

2. MD0 = MD1 = 0, P92 = 0, P91 = P90 = 1

RES = 0

MD1 = 1

Figure 22.3 Flash Memory Mode Transitions

HD6432138SW Datasheet(PDF) 682 Page - Renesas Technology Corp