83C196MD データシートの表示（PDF） - Intel

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83C196MD

INDUSTRIAL MOTOR CONTROL MICROCONTROLLER

Intel 

8XC196MD

Interrupt Source

Capture Compare5

Compare4

Capture Compare4

Table 3 Interrupt Sources Vectors and Priorities

Interrupt Service

PTS Service

Symbol

Name Vector Priority Name Vector Priority

CAPCOMP5 INT12 2038H

12

PTS12 2058H

27

COMP4

INT11 2036H

11

PTS11 2056H

26

CAPCOMP4 INT10 2034H

10

PTS10 2054H

25

Interrupt and PTS Vectors

The 8XC196MD has three new interrupt and PTS

vectors which are Capture Compare5 Compare 4

and Capture Compare4 Table 3 shows these inter-

rupt vectors and priorities These are shown as re-

served vectors in the 8XC196MC User’s Manual

Frequency Generator

The Frequency Generator (FG) Peripheral which

was not available on the 8XC196MC device is avail-

able on the 8XC196MD device The FG outputs a

programmable-frequency 50% duty cycle waveform

on the FREQOUT pin (P7 7) There are two 8-bit reg-

isters which control the FG peripheral

Frequency Generator Control Register

(FG CON) at 1FB8h

Frequency Generator Period Count Register

(FG COUNT) at 1FBAh

The FG CON can be read or written This register

is loaded with a value which determines the number

of counts necessary for toggling the output The fol-

lowing equation should be used to calculate the

FG CON value

FG CON value e

FXTAL

b1

16 (FG Frequency)

where FG Frequency is from 4 kHz to 1 MHz

The FG COUNT is loaded with the FG CON reg-

ister value The FG COUNT register is decrement-

ed every eighth state time When it reaches 00h the

FG COUNT register will send a signal to toggle the

output pin and reload the FG COUNT register with

the value in the FG CON register The

FG COUNT can only be read not written

The FREQOUT pin (P7 7) must be configured for a

special function to use it for the Frequency Genera-

tor feature

Port 7

Port 7 is an additional bidirectional port that was not

available on the 8XC196MC device Port 7 can be

used as I O or some of the pins have special func-

tions The pins are listed below followed by their

special functions

Table 4 Port 7 Special Function Pins

Pin

Special Function

P7 0

CAPCOMP4

P7 1

CAPCOMP5

P7 2

CAPCOMP4

P7 3

CAPCOMP5

P7 4

P7 5

P7 6

P7 7

FREQOUT

The special functions of the pins are selected in the

Port 7 SFRs The Port 2 I O Port section of the

8XC196MC User’s Manual can be referenced when

setting up the Port 7 SFRs Port 7 SFRs are located

in the following locations

Table 5 Port 7 Special Function Registers

SFR

Address

P7 MODE

1FD1h

P7 DIR

1FD3h

P7 REG

1FD5h

P7 PIN

1FD7h

5

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