h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 715

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

22.1
The H8S/2169 or H8S/2149 has 64 kbytes of on-chip ROM (flash memory). The ROM is
connected to the bus master by a 16-bit data bus. The bus master accesses both byte and word data
in one state, enabling faster instruction fetches and higher processing speed.
The mode pins (MD1 and MD0) and the EXPE bit in MDCR can be set to enable or disable the
on-chip ROM.
The chip can be erased and programmed on-board as well as with a general-purpose PROM
programmer.
22.1.1
Figure 22.1 shows a block diagram of the ROM.
Overview
Block Diagram
Figure 22.1 ROM Block Diagram
H'00FFFE
H'000000
H'000002
Internal data bus (upper 8 bits)
Internal data bus (lower 8 bits)
Section 22 ROM
H'00FFFF
H'000001
H'000003
Rev. 3.00 Jan 18, 2006 page 687 of 1044
REJ09B0280-0300
Section 22 ROM