h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 407

• Manufacturer Part Number: h8s-2172
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
• Manufacturer: Renesas Electronics Corporation.

14.1.1
When each mode pin and the FWE pin are set in the reset state and reset start is performed, this
LSI enters each operating mode as shown in figure 14.2.
• Flash memory can be read in user mode, but cannot be programmed or erased.
• Flash memory can be read, programmed, or erased on the board only in user program mode,
• 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
Operating Mode
FWE = 0
FWE = 1
Figure 14.2 Mode Transition of Flash Memory
User program
mode
Reset state
On-board programming mode
User boot
Programmer mode setting
mode
Rev. 2.00, 03/04, page 375 of 534
=
0
Boot mode
Programmer
mode