HT49R50 Просмотр технического описания (PDF) - Holtek Semiconductor

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HT49R50

8-Bit Microcontroller

Holtek Semiconductor 

HT49R50

· Location 004H

Location 004H is reserved for the external in-

terrupt service program. If the INT0 input

pin is activated, and the interrupt is enabled,

and the stack is not full, the program begins

execution at location 004H.

· Location 008H

Location 008H is reserved for the external in-

terrupt service program also. If the INT1 in-

put pin is activated, and the interrupt is

enabled, and the stack is not full, the program

begins execution at location 008H.

· Location 00CH

Location 00CH is reserved for the timer/event

counter 0 interrupt service program. If a

timer interrupt results from a timer/event

counter 0 overflow, and if the interrupt is en-

abled and the stack is not full, the program

begins execution at location 00CH.

· Location 010H

Location 010H is reserved for the timer/event

counter 1 interrupt service program. If a

timer interrupt results from a timer/event

000H

D e v ic e in itia liz a tio n p r o g r a m

004H

E x te r n a l in te r r u p t 0 s u b r o u tin e

008H

E x te r n a l in te r r u p t 1 s u b r o u tin e

00C H

T im e r /e v e n t c o u n te r 0 in te r r u p t s u b r o u tin e

010H

T im e r /e v e n t c o u n te r 1 in te r r u p t s u b r o u tin e

014H

T im e B a s e In te r r u p t

018H

R T C In te rru p t

n00H

L o o k - u p ta b le ( 2 5 6 w o r d s )

nFFH

P ro g ra m

ROM

L o o k - u p ta b le ( 2 5 6 w o r d s )

FFFH

1 5 b its

N o te : n ra n g e s fro m 0 to F

Program memory

counter 1 overflow, and if the interrupt is en-

abled and the stack is not full, the program

begins execution at location 010H.

Mode

Program Counter

*11 *10 *9 *8 *7 *6 *5 *4 *3 *2 *1 *0

Initial Reset

0000000000 00

External Interrupt 0

0000000001 00

External Interrupt 1

0000000010 00

Timer/event counter 0 overflow 0 0 0 0 0 0 0 0 1 1 0 0

Timer/event counter 1 overflow 0 0 0 0 0 0 0 1 0 0 0 0

Time Base Interrupt

0000000101 00

RTC Interrupt

0000000110 00

Skip

PC+2

Loading PCL

*11 *10 *9 *8 @7 @6 @5 @4 @3 @2 @1 @0

Jump, Call Branch

#11 #10 #9 #8 #7 #6 #5 #4 #3 #2 #1 #0

Return From Subroutine

S11 S10 S9 S8 S7 S6 S5 S4 S3 S2 S1 S0

Note:

*11~*0: Program counter bits

#11~#0: Instruction code bits

Program counter

S11~S0: Stack register bits

@7~@0: PCL bits

10

October 22, 1999

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