Advertisement
25.1.1
Operating Mode
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 25.2.
•
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 boot mode, user
program mode, and user boot mode.
•
Flash memory can be read, programmed, or erased by means of the PROM programmer in
programmer mode.
FLSHE = 0
→ FWE = 0
User mode
FWE = 1 →
FLSHE = 1
Reset state
User program
mode
Figure 25.2 Mode Transition of Flash Memory
RES = 0
Programmer mode setting
User boot
mode
On-board programming mode
Rev. 1.00 Mar. 12, 2008 Page 919 of 1178
Section 25 Flash Memory
Programmer
mode
Boot mode
SCI_1/USB
REJ09B0403-0100
Advertisement
