參數(shù)資料
型號(hào): SAB-C505C-LM
廠商: SIEMENS A G
元件分類: 微控制器/微處理器
英文描述: 8-Bit CMOS Microcontroller
中文描述: 8-BIT, MROM, 20 MHz, MICROCONTROLLER, PQFP44
封裝: PLASTIC, MQFP-44
文件頁(yè)數(shù): 17/85頁(yè)
文件大?。?/td> 487K
代理商: SAB-C505C-LM
C505L
Data Sheet
15
06.99
Memory Organization
The C505L CPU manipulates operands in the following five address spaces:
– up to 64 Kbytes of program memory (32K on-chip OTP memory)
– up to 64 Kbytes of external data memory
– 256 bytes of internal data memory
– 256 bytes of internal XRAM data memory
– 20 bytes of LCD Controller registers
– 16 bytes of Real-Time Clock (RTC) registers
– A 128-byte Special Function Register (SFR) area
Figure 5
illustrates the memory address spaces of the C505L.
Figure 5
C505L Memory Map
"Code Space"
(EA = 1)
Internal
H
0000
7FFFH
H
0000
"Data Space"
Data
Memory
External
External
External
Data
Memory
8000H
H
FFFF
Internal LCD
& RTC
(36 Byte)
F3DBH
Alternatively
Not used
(256 Byte)
Internal
XRAM
H
H
Register
Function
"Internal Data Space"
RAM
Internal
H
00
Internal
RAM
80H
7FH
Special
MCD03996
80H
Address
F3DC
F3FF
H
H
Address
Indirect
H
FFFF
FF00H
FF
Direct
FF
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