SDA30C163-2 데이터 시트보기 (PDF) - Infineon Technologies

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SDA30C163-2

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SDA 30C163-2

Internal Data RAM

The internal data RAM provides a 256-byte scratch pad memory, which includes four register banks

and 128 direct addressable software flags. Each register bank contains registers R0 – R7. The

addressable flags are located in the 16-byte locations starting at byte address 32 and ending with

byte location 47 of the RAM-address space.

In addition to this standard internal data RAM the processor contains additional 1024 bytes internal

RAM. It can be considered as a part of an external data memory. It is located at addresses 63488

to 64511 of the external data memory address space and is referenced by MOVX-instructions

(MOVX A, @DPTR).

Arithmetic/Logic Unit (ALU)

The arithmetic section of the processor performs many data manipulation functions and includes

the Arithmetic/Logic Unit (ALU) and the A, B and PSW-registers. The ALU accepts 8-bit data words

from one or two sources and generates an 8-bit result under the control of the instruction decoder.

The ALU performs the arithmetic operations of add, subtract, multiply, divide, increment,

decrement, BCD-decimal-add-adjust and compare, and the logic operations of and, or, exclusive-

or, complement and rotate (right, left, or nibble swap).

The A-register is the accumulator, the B-register is dedicated during multiply and divide and serves

as both a source and a destination. During all other operations the B-register is simply another

location of the special function register space and may be used for any purpose.

Boolean Processor

The Boolean processor is an integral part of the processor architecture. It is an independent bit

processor with its own instruction set, its own accumulator (the carry flag) and its own bit-

addressable RAM and l/O. The bit manipulation instructions allow the direct addressing of 128 bits

within the internal data RAM and several bits within the special function registers. The special

function registers which have addresses exactly divisible by eight contain directly addressable bits.

The Boolean processor can perform, on any addressable bit, the bit operations of set, clear,

complement, jump-if-set, jump-if-not-set, jump-if-set then-clear and move to/from carry. Between

any addressable bit (or its complement) and the carry flag it can perform the bit operation of logical

AND or logical OR with the result returned to the carry flag.

Semiconductor Group

14

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