Q67120-C1054 Просмотр технического описания (PDF) - Siemens AG

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Q67120-C1054

8-Bit CMOS Microcontroller

Siemens AG 

C501

Memory Organization

The C501 CPU manipulates data and operands in the following four address spaces:

– up to 64 Kbyte of internal/external program memory

– up to 64 Kbyte of external data memory

– 256 bytes of internal data memory

– a 128 byte special function register area

Figure 7 illustrates the memory address spaces of the C501.

FFFF H

FFFF H

External

External

Internal

(EA = 1)

2000 H

External

(EA = 0)

1FFF H

0000 H

"Code Space"

0000 H

"Data Space"

Indirect

Address

FFH

Internal

RAM

80 H

Internal

RAM

Direct

Address

Special FFH

Function

Register

80 H

7F H

00 H

"Internal Data Space"

MCD03224

Figure 7

C501 Memory Map

Semiconductor Group

15

1997-04-01

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