Toshiba TLCS-90 Series Data Book page 155

TOSHIBA
TM.P 8049PI
-6, TMP
8039PI-6
JTF
Inst ruet ion
Re set ----:.
~-"
Timer Overflov:
S
Timer
Flag F-F
>--+---l
R
Conditional Jump Logic
------------~~~s Q~------~
Timer Interrupt
E>:ecution-----.:~
.....
Reset
INT pin
ALE
Timer
Overflow
R F-F
Inter-
RETR
Instruc-
tion
I
... c.:_
S
S-~
J.Q
~
~
tlC "t:
~
c:
c.:
.u
~ ~
R
c:
e,; -'
...... t::::;
u
01-----1
__
--~~~E>:ternal
inter-
CLK
rupt Recognized
Q
}-II-+-..........
---------i
D
Last cycle
of
Inst ruct ~on
E~; I
Inst ruet ion
s
~
Q
="'=
~
c:,;
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a,:
~
... r.:
~
R ~ ~
J..
t.~~ TC~T
I S . . . . . Q
Instruction
~
i:
~ ~
~
c.;
~
.....
~
Rf:~d.
Reset---~-+----------~
Instruction
DIS TCNTI
Instruction
CLR
Timer interrupt
Recognized
Execution
of
Inter-
rupt Call Instruction
Fig.3 Concept of Interrupt Control Circuit
(5) Interrupt Control Circuit
• There are two distinct types of Interrupts in the TMP8049.
(1) External Interrupt from the INT terminal
(2) Timer Interrupt caused by timer overflow
MCU48-145