C505_9708 SIEMENS [Siemens Semiconductor Group], C505_9708 Datasheet - Page 22

• Manufacturer Part Number: C505_9708
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

3
The C505 CPU manipulates operands in the following four address spaces:
Figure 3-1 illustrates the memory address spaces of the C505.
Figure 3-1
C505 Memory Map
Semiconductor Group
– up to 64 Kbytes of program memory (16K on-chip program memory for C505-2R)
– up to 64 Kbytes of external data memory
– 256 bytes of internal data memory
– 256 bytes of internal XRAM data memory
– 256 bytes CAN controller registers / data memory (C505C only)
– a 128 byte special function register area
C505C only
Memory Organization
(EA = 1)
Int.
"Code Space"
Ext.
(EA = 0)
Ext.
FFFF
4000
H
H
3FFF
0000
H
H
Memory
Data
Ext.
"Data Space"
Alternatively
3-1
Memory
Data
Ext.
(256 KByte)
(256 Byte)
Not used
Int. CAN
Internal
XRAM
Contr.
F6FF
0000
H
H
FFFF
FF00
F7FF
F700
Indirect
Internal
Addr.
RAM
H
H
H
H
Memory Organization
"internal Data Space"
Internal
FF
80
RAM
H
H
C505 / C505C
Function
Special
Direct
Regs.
Addr.
7F
00
H
H
1997-08-01
MCD03288
FF
80
H
H