JPS6065367A - Interruption control circuit of integrated circuit - Google Patents

Abstract

PURPOSE:To ensure the effective actuation of an IC by selecting the contents of input for start of an interruption according to the state set previously to an FF and forms an interruption controlling signal. CONSTITUTION:An IC1 has a stand-by mode where all circuits stop their operations excepting for a clock generator 4 and a liquid crystal display circuit 3. Then the stopped circuits are started again via a start control circuit 5 when an exclusive OR output obtained between key inputs K1-K5 applied from a gate circuit 7 and an output signal C of an FF6 is set at ''1''. The state of the FF6 is controlled by a program and set before a stand-by mode is set. Then a state ''1'' or ''0'' is decided for the IC1. In other words, a start mode is set in case the signal C is ''0'' and either one of inputs K1-K5 is set at ''1'' or in case the inputs K1-K5 are all set at ''0'' with the signal C set at ''1'' respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an interrupt control circuit in an integrated circuit.

〈Conventional technique (+l, j > CMO5I/Rashinuta is 1\゛1-1 Mr. consumption'' since it costs 1 yen to the city horn, so this] 1) The integrated circuit constructed using IJy can also be operated with punishment. In order not to impair the effect of the power consumption, rather than reducing the power consumption, efforts are being made to reduce the power consumption.

For example, the first festival to operate a mechanism using an integrated circuit, the movement ('Ij!
If a stand-by mode is set up during the 11-day period, and if the ``IE desk-1~IL111111 path'' is set, during this stand-by mode, other components included in the integrated circuit, except for the evening lock and the liquid crystal display circuit, will be disabled. A circuit operation is adopted in which the operation of a circuit part is stopped, thereby reducing power consumption and power.In general, integrated circuits are used.
The operation of turning on the stand-by mode as described in item 1 is disabled by a command, and the turning operation is carried out manually. However, when the human key input is used as a signal as in the conventional circuit, the period of key operation is usually very uneven, and the integrated circuit continues to function as 1-11 and standby mode 1-1. There are often cases in which Nukut becomes a river and C I) U etc. perform the action 5.
I decided to continue, consuming 'IL power, I! ;”; Invited one person and achieved the II target of place j91 +1x L,? ',) How long does it take to be 1℃?

1-J: Unama jIlflKari, as another method, provide a counter that counts the trailing edge bounce of the key,
Perform the key count 1- with the bar 1-'', and when the count reaches the predetermined value, collect 4;'i CI in the circuit.
) U, etc., are also stationed for the most part.

However, in this method, the bounce count time is 1
．． ', I is set, and by lengthening the stop period 6
There is also a risk that this may cause problems with the 11 calculation J111.

Even in ISUKU, it was difficult to say that the secondary side 1 operation was performed efficiently when an interrupt was activated, such as when in scunto-bi mode or ranonukuto.

<Objective of the Invention> The present invention eliminates the drawbacks of the conventional interrupt control circuits described above and provides an integrated circuit that can efficiently receive interrupts and perform operations only when necessary.

<-nogo him 1st row>! The CMO5I chip microcomputer for electric 4L shown in Figure 1 is installed as a single bond circuit, and the interrupt source is the standby node from the standby mode! ? ? ? ;
Let me explain.

The integrated circuit 1 has the same CI (5) J as this type of conventional circuit.
) U 2 , a liquid crystal display circuit b'lj 3, a tarot generator 4 and a control circuit 5 are integrally provided, and a memory circuit (1) for storing instructions and data is also provided.
1 (not shown), etc., and the circuits are interconnected so that the integrated circuit 1 can function as a calculator. In particular, the CPU 2 in the integrated circuit of this embodiment includes a flip-flop 6 for interrupt control. The signal C representing the state of the Frisopfloc 16 is:
5 is given to the key power from 1 to the gate circuit 7, and υ1 is given to the key power from 1 to 5 and the signal C is given to the gate circuit 7.
Alternative disjunctions are taken and a human input signal to the Nuku-1 control circuit 5 is formed.

The integrated circuit has a standby mode, and in this standby mode, all circuits of the integrated circuit 1 except the clock generator 4 and the liquid crystal display circuit 3 stop operating. Stand by mode 1-ni lZJ', entered by git command, startup from stand high mode' is by case l'
When the key output from circuit 7 reaches 1~, and the output signal C of Furinoff'Fronoso°6 becomes 1, the output signal C is output from circuit 7. It is carried out according to

Here, the state of the flip-flop 6 is procl.
The flip-flop controlled by n11] enters the standby mode 1-1) is set to iJ, then integrated 1!4
The state ゛1゛° depends on whether you want the 1st road to be in the state like .

"'0" is set. That is, when the output signal C of the flip-flop is 0°, when any one of the key inputs K1 to I becomes 1, the switch is set to 1.

When the output signal C is still "1", the operation starts when the keys 1 to 5 (1) are "'0".

This will be explained in "Further Revised Embodiment 1" 111 using flowchart 1 in FIG.

Now, Furinozofronop 6 outputs signal C by Procra 11.
Assume that the camera enters standby mode with the camera set to '0°'. This is because integrated circuits are the key to human power.7. +
i is in a standby state, and at the start (teyo-), there is a key person of 5 in ~1; 1 le is determined, tlte CP
U2 starts its operation from a predetermined star 1 address. Collection ("(" circuit +71: 71.it XI heat treatment actual 1 according to the key pressed manually through the key press routine
1 shift, tfk crystal display no tesozo, blue l-1
``Kunno Ni'', 11h power (j
``J'' as i, lli, and C.

Set W. Flip-flop 6 state 1: IIS LR
After being set to '1', the CENI command enters the 17 circuit (1':1 scundby mode).

In the integrated circuit installed in the stand ``Hymo 1-'', if any key is kept pressed for a long time, that is, if the key is pressed manually, the output No. 1-j of the flip flop will be ``'' ] Since the circuit is in the state of 4'+', the circuit maintains the machine state, and only when the key is stiffened does it switch to 3, the key human power signal and the flip-flop 1. Since the other logical sum is the start signal for changing from standby mode to start-up state, if the key number 1-1 continues to be output, the flip-flop 6C1゜"1" Because the start signal is in the J12. state, the start signal is not generated and the rIJ interval is +)'7.When the key is pressed and the nut is pressed 1, the key is pressed and the key is pressed. li moving angle 1; C-0 of force/composition
After the key shown in the NO route of Discrimination Steno°? l Kai Haransu Riki Kun I Routine fi:! No.C wo”
CI', NP instruction is executed after setting to ``o''.

In other words, the trailing edge Haun Mega J! When the li reaches constant 1 and the counter overflows, it is assumed that the bounce count has been completed, and the solinograph 1-I sozo 6 is set to C=O, and the maximum θ is
J's key, 5chi, return to the book. If the key count is not completed, flip-flop 6 is set to 0.
Hold it at -1 and execute the CEND command, then wait until the mountain key is exhausted.

In this way, in the control circuit of this embodiment, even if the key is kept pressed, '4. It is possible to remain in the aircraft state, and the consumption of gravity can be reduced.

The above example shows how to scoot from standby mode: l
I mentioned r control, but with an integrated circuit where consumption gravity is not a problem, standby mode is set to 1''' in state C;
171i! 11, J1 included I! , j l'J (
・-)/Cme0jin no Tsuki 1. 4) 11 peaks 1'' white of the output and the output of the flip-flop.
As a result, according to the present invention, the CPLJU of the circuit 41'1 is calculated by applying the 1 (1 degree) configuration in the song to the 1 j force 11.
l, key 1.1'', the interrupt will be received only when the key Hound count power is at a minimum, and the collection (L
Required as 11 circuit; 33114J'/C operation, low power consumption 1)...'j,':';C')
4"l1 point &-J, and the ability to process other calculations is completely unknown, East (3, 4.1 n1 i'!- which can operate 6 circuits efficiently) 'i'l' 7:1 i explanation 51 Figure is a block diagram of the main part of the example integration circuit 'trl', Figure 2 explains the operation of the same actual temperature example. This is the flowchart 1-, 1: Integrated circuit, 2: Cl'' [1, 3: Fitter crystal table small circuit, 5 Nisku I control circuit, 6: Turinopflo knob, 7: Gate circuit, K, ~1 ri: key.

￥Jl 1n I color 2 diagram

Claims (1)

[Claims] 1 Frisopf fi in which the r-shaped ■ is set as a program
7, and the content of the human power needed to activate the interrupt.''
an integrated circuit which selects according to a preset state of the flip-flop and forms an interrupt control signal;
Interrupt control circuit for i-i1 path. 2. The human power required to activate the interrupt is a plurality of key manpowers, and the event in which any one of the plurality of key manpowers is true; - All of the key manpowers of the number indicated are false. 11. An interrupt control circuit for an integrated circuit, characterized in that an interrupt control circuit selects an element in a flip-flop state.