46
H'FFF8
RAM
(1024 bytes)
ECR
EPR
DR
DDR
H'FFF9
H'FFFA
H'FFFB
H'FFFE
H'FFFF
H'FBC0
H'FFBF
H'8000
H'C1FF
H'BFFF
ROM
(32 kbytes)
IRQ
H'0000
H'0000/H'0001
H'0002/H'0003
H'0004/H'0005
H'0006/H'0007
H'0008/H'0009
Exception vectors
H'7FFF
Registers for I/O port
Registers for EEPROM
EWE interrupt
UDF interrupt
H'000A/H'000B
H'000C/H'000D
TCSR
TCNT
Registers for WDT
H'FFFC
H'FFFD
RCSR
RNRR
TCWA
SYSCR
Registers for RNG
Register for WDT
H'FFF0
H'FFF2
H'FFF3
H'FFF4
H'FFF5
Address
Address
Access
Reset
PBM
= 1
PBM
= 0
EEPROM
data area
(16 kbytes)
EEPROM
protection area
(Read
only)
(Read
only)
(Read
only)
Word
Byte
x
x
x
x
x
x
x
: Access possible
: Access not possible
x
Note:
Switched by EPR
(
PBM
bit)
Register for CPU clock selection
(512 bytes)
Shaded areas are unavailable to the user. User programs must not access these areas.
Figure 3.2 H8/3153 Memory Map