SAB-C163-LF datasheet(11/68 Pages) SIEMENS

Part #	SAB-C163-LF

Description	16-bit CMOS Single-Chip Microcontroller

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Manufacturer	SIEMENS [Siemens Semiconductor Group]

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11 / 68 page

11Aug98@14:48h Intermediate Version

Semiconductor Group

9

1998-08

C163-L

Memory Organization

The memory space of the C163-L is configured in a Von Neumann architecture which means that

code memory, data memory, registers and I/O ports are organized within the same linear address

space which includes 16 MBytes. The entire memory space can be accessed bytewise or wordwise.

Particular portions of the on-chip memory have additionally been made directly bit addressable.

The C163-L is prepared to incorporate on-chip mask-programmable ROM, OTP or Flash memory

for code or constant data. Currently no program memory is integrated.

1 KByte of on-chip RAM is provided as a storage for user defined variables, for the system stack,

general purpose register banks and even for code. A register bank can consist of up to 16 wordwide

(R0 to R15) and/or bytewide (RL0, RH0, …, RL7, RH7) so-called General Purpose Registers

(GPRs).

1024 bytes (2 * 512 bytes) of the address space are reserved for the Special Function Register

areas (SFR space and ESFR space). SFRs are wordwide registers which are used for controlling

and monitoring functions of the different on-chip units. Unused SFR addresses are reserved for

other/future members of the C166 family.

In order to meet the needs of designs where more memory is required than is provided on chip, up

to 16 MBytes of external RAM and/or ROM can be connected to the microcontroller.

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