Datasheet

Section 3 MCU Operating Modes
Rev.7.00 Mar. 18, 2009 page 80 of 1136
REJ09B0109-0700
RAM: 24 kbytes
Modes 1 and 2
(Expanded mode with
on-chip ROM disabled)
ROM: 384 kbytes
RAM: 24 kbytes
Mode 3
(Boot mode)
H'000000
H'FF4000
H'FF6000
H'FFC000
H'FFC800
H'000000
H'FFFC00
External address
space
On-chip RAM/
external address
space
*
1
External address space
External address space
Internal I/O registers
On-chip ROM
H'FFFFFF
H'FFFC00
H'FFFF00
H'FFFF20
H'FFFFFF
H'FFFF00
H'FFFF20
H'060000
External address
space/
Reserved area
*
2
*
4
Reserved area
*
4
Reserved area
*
4
H'FF4000
H'FF6000
H'FFC000
H'FFC800
Reserved area
*
4
Reserved area
*
4
Notes: 1. This area is specified as the external address space by clearing the RAME bit in SYSCR to 0.
2. When EXPE = 1, external address space; when EXPE = 0, reserved area.
3. On-chip RAM is used for flash memory programming. Do not clear the RAME bit in SYSCR to 0.
4. A reserved area should not be accessed.
Internal I/O registers
Internal I/O registers
Internal I/O registers
External address space/
reserved area
*
2
*
4
On-chip RAM
*
3
External address space/
reserved area
*
2
*
4
Figure 3.3 Memory Map for H8S/2377 and H8S/2377R (1)