HD64F3048VTF8 Datasheet, PDF (602/903 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip

Section 18 ROM (H8/3048F-ONE: Single Power Supply, H8/3048B Mask ROM Version)
18.1.2 Mode Pin Settings
The H8/3048F-ONE has 128 kbytes of on-chip flash memory. The flash memory is connected to
the CPU by a 16-bit data bus. The CPU accesses both byte data and word data in two states,
enabling rapid data transfer.
The mode pins (MD₂ to MD₀), FWE pin, and RXD1 pin can be set to enable or disable the on-chip
ROM as indicated in table 18.1.
Table 18.1 Operating Mode and ROM
Mode
Mode 1
(1-Mbyte expanded mode
with on-chip ROM disabled)
Mode 2
(1-Mbyte expanded mode
with on-chip ROM disabled)
Mode 3
(16-Mbyte expanded mode
with on-chip ROM disabled)
Mode 4
(16-Mbyte expanded mode
with on-chip ROM disabled)
Mode 5
(1-Mbyte expanded mode
with on-chip ROM enabled)
Mode 6
(16-Mbyte expanded mode
with on-chip ROM enabled)
Mode 7 (single-chip mode)
MD₂
0
MD₁
0
0
1
0
1
1
0
1
0
1
1
1
1
Pin Name
MD₀ FWE
1
0
0
0
1
0
0
0
1
0
0
0
1
0
RXD1
0/1
On-Chip ROM
Disabled (external
address area)
0/1
0/1
0/1
0/1 Enabled
0/1
0/1
The H8/3048F-ONE can be set to PROM mode and programmed with a general-purpose PROM
programmer.
Rev. 3.00 Sep 27, 2006 page 574 of 872
REJ09B0325-0300