P90CE201 データシートの表示（PDF） - Philips Electronics

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P90CE201

16-bit microcontroller

Philips Electronics 

Philips Semiconductors

16-bit microcontroller

5.4.1 EXCEPTION VECTORS

Exception vectors are memory locations from which the

CPU fetches the address of a routine that will handle that

exception. All exception vectors are 2 words long (see Fig.6)

except for the reset vector which is made up of 4 words,

containing the Program Counter (PC) and the

Supervisor Stack Pointer (SSP). All exception vectors are

contained in the supervisor data space.

A vector number is an 8-bit number that, when multiplied

by 4, gives the address of an exception vector. Vector

numbers are generated internally. The memory map for

the exception vectors is given in Table 2.

handbook, hWalfopradge0

Word 1

NEW PROGRAM COUNTER (HIGH)

NEW PROGRAM COUNTER (LOW)

MCD509

Fig.6 Exception vector format.

Product specification

P90CE201

August 1993

11

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