saf-xc888cm-8ffi5v Infineon Technologies Corporation, saf-xc888cm-8ffi5v Datasheet - Page 27

• Manufacturer Part Number: saf-xc888cm-8ffi5v
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

3.2
The XC886/888 CPU operates in the following five address spaces:
•
•
•
•
•
Figure 7
24-Kbyte Flash devices, the shaded banks are not available.
Figure 7
For both 24-Kbyte and 32-Kbyte ROM devices, the last four bytes of the ROM from
7FFC
Data Sheet
P-Flash Banks 4 and 5
P-Flash Banks 2 and 3
P-Flash Banks 0 and 1
12 Kbytes of Boot ROM program memory
256 bytes of internal RAM data memory
1.5 Kbytes of XRAM memory
(XRAM can be read/written as program memory or external data memory)
A 128-byte Special Function Register area
24/32 Kbytes of Flash program memory (Flash devices); or
24/32 Kbytes of ROM program memory, with additional 4 Kbytes of Flash
(ROM devices)
Program Space
D-Flash Bank 1
D-Flash Bank 0
D-Flash Bank 0
D-Flash Bank 1
2 x 4 Kbytes
2 x 4 Kbytes
2 x 4 Kbytes
H
1.5 Kbytes
Boot ROM
12 Kbytes
4 Kbytes
4 Kbytes
4 Kbytes
4 Kbytes
XRAM
to 7FFF
illustrates the memory address spaces of the 32-Kbyte Flash devices. For the
Memory Organization
1)
Memory Map of XC886/888 Flash Device
H
are reserved for the ROM signature and cannot be used to store user
F600
F000
FFFF
C000
B000
A000
8000
7000
6000
5000
4000
2000
0000
H
H
H
H
H
H
H
H
H
H
H
H
H
External Data Space
1.5 Kbytes
XRAM
20
F600
F000
FFFF
0000
H
H
H
H
Internal RAM
7F
00
Address
Indirect
H
H
1)
Internal Data Space
Functional Description
In 24-Kbyte Flash devices, the upper 2-
Kbyte of Banks 4 and 5 are not available.
Internal RAM
XC886/888CLM
Special Function
Registers
Address
Direct
V1.1, 2009-01
FF
80
H
H