SH7280 Datasheet, PDF (1415/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 26 Flash Memory
Table 26.1
Relationship between FWE and MD Pins and Operating Modes
ROM ROM User User
USB
Reset Invalid Valid Program Boot Boot Boot Programmer
Pin
State Mode Mode Mode Mode*³ Mode Mode*³*⁴ Mode
RES
0
1
1
1
1
1
1
FWE
0/1
0
0
1
1
1
1
MD0
0/1
0/1*¹
0/1*²
0
1
0
1
MD1
0/1
0
1
1
0
0
1
Setting value
depends on
the condition
of the
specialized
PROM
programmer.
Notes: 1. MD0 = 0: 16-bit external bus, MD0 = 1: 8-bit external bus
2. MD0 = 0: External bus can be used, MD0 = 1: Single-chip mode (external bus cannot
be used)
3. Setting is prohibited in the SH7243.
4. Pin state can be user program mode in a single chip mode if FWE = 0 before releasing
the RES pin or FWE = 1 after releasing the RES pin.
Rev. 1.00 Jun. 26, 2008 Page 1385 of 1692
REJ09B0393-0100