H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 710

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 18 ROM (H8S/2351 Only)
18.2
The on-chip ROM is connected to the CPU by a 16-bit data bus, and both byte and word data can
be accessed in one state. Even addresses are connected to the upper 8 bits, and odd addresses to
the lower 8 bits. Word data must start at an even address.
The on-chip ROM is enabled and disabled by setting the mode pins (MD
settings are shown in table 18.1.
In normal mode, a maximum of 56 kbytes of ROM can be used.
Table 18.1 Operating Modes and ROM Area
Operating Mode
Mode 1
Mode 2
Mode 3
Mode 4
Mode 5
Mode 6
Mode 7
Rev. 3.00 Sep 15, 2006 page 676 of 988
REJ09B0330-0300
Operation
Normal expanded mode with
on-chip ROM disabled
Normal expanded mode with
on-chip ROM enabled
Normal single-chip mode
Advanced expanded mode
with on-chip ROM disabled
Advanced expanded mode
with on-chip ROM disabled
Advanced expanded mode
with on-chip ROM enabled
Advanced single-chip mode
MD
0
1
2
Mode Pin
MD
0
1
0
1
1
MD
1
0
1
0
1
0
1
0
2
, MD
On-Chip ROM
Disabled
Enabled (56 kbytes)
Disabled
Enabled
1
, and MD
0
). These