HD64F7050 RENESAS [Renesas Technology Corp], HD64F7050 Datasheet - Page 557

• Manufacturer Part Number: HD64F7050
• Description: 32-Bit RISC Microcomputer SuperH RISC engine Family/
• Manufacturer: RENESAS [Renesas Technology Corp]

18.2.2
When the mode pins and the FWE pin are set in the reset state and a reset-start is executed, the
SH7050 enters one of the operating modes shown in figure 18.2. 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.
Notes: Only make a transition between user mode and user program mode when the CPU is
FWE = 1
User mode
Mode Transitions
not accessing the flash memory.
1. RAM emulation possible
2. MD0 = 1, MD1 = 0, MD2 = 1, MD3 = 1
On-board programming mode
program mode
FWE = 0
* 1
User
Figure 18.2 Flash Memory Mode Transitions
MD1 = 1,
FWE = 0
MD1 = 1,
FWE = 1
* 1
RES = 0
RES = 0
MD1 = 0,
FWE = 1
Reset state
Boot mode
Rev. 5.00 Jan 06, 2006 page 537 of 818
RES = 0
Section 18 ROM (128 kB Version)
* 2
RES = 0
REJ09B0273-0500
Programmer
mode