p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 497

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

19.1.1
When each mode pin is set in the reset state and the reset is started, this LSI enters each operating
mode as shown in figure 19.2.
1. Flash memory can be read in user mode, but cannot be programmed or erased.
2. Flash memory can be read, programmed, or erased on the board only in user program mode,
3. Flash memory can be read, programmed, or erased by means of the PROM programmer in
user boot mode, and boot mode.
programmer mode.
User mode
Mode Transitions
FLSHE = 0
FLSHE = 1
Figure 19.2 Mode Transition for Flash Memory
User program
mode
Reset state
On-board programming mode
Section 19 Flash Memory (0.18-µm F-ZTAT Version)
User boot
Programmer mode setting
mode
Rev. 1.00 Sep. 21, 2006 Page 459 of 658
RES = 0
Boot mode
REJ09B0310-0100
Programmer
mode