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watchdog timer is not reset within 3–4 seconds through the program, the CPU will be initially reset. This option selection is for indicating whether to use or not this watchdog timer.

*** OPTION NO.4 ***

WATCH DOG TIMER 1. USE

2. NOT USE PLEASE SELECT NO.(1)? 1

1. USE SELECTED

In the message prompting entry, enter the value correspond-ing to the option to be selected. When " " alone is pressed, the value in parentheses at the message prompt will be selected.

In the above display screen sample, "1" is entered to select

"USE" as the option. In return, the confirmation is displayed that "USE" has been selected.

Watchdog timer

SPECIFICATION

SELECTION PROCEDURE

Select the terminal group to generate the input interrupt factor from among K00–K03. Any one may be selected from among 4 types: from a single-terminal (K00 only) input interrupt to all 4-terminal (K00–K03) input interrupt.

Although it is necessary that at least one terminal (K00) be selected from among K00–K03 terminal groups to serve as terminal for generating the interrupt factor, when interrupt for all 4 terminals is not required, interrupt request to the CPU will not be issued if the interrupt mask register (EIK0) is masked through the program.

*** OPTION NO.5 ***

KEY INTERRUPT ( K00-K03 ) 1. K00

2. K00, K01 3. K00, K01, K02 4. K00, K01, K02, K03 PLEASE SELECT NO.(4)? 4

4. K00, K01, K02, K03 SELECTED

In the message prompting entry, enter the value correspond-ing to the option to be selected. When " " alone is pressed, the value in parentheses at the message prompt will be selected.

In the above display screen sample, "4" is entered to select

"K00, K01, K02, K03" as the option. In return, the confirma-tion is displayed that "K00, K01, K02, K03" has been se-lected.

Input interrupt (K00–

K03)

SPECIFICATION

SELECTION PROCEDURE

CHAPTER 3: OPTION GENERATOR OPERATION PROCEDURE

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OPG6266

SPECIFICATION

SELECTION PROCEDURE

Select the terminal group to generate the input interrupt factor from among K10–K13. Any one may be selected from among 4 types: from a single-terminal (K10 only) input interrupt to all 4-terminal (K10–K13) input interrupt.

Although it is necessary that at least one terminal (K10) be selected from among K10–K13 terminal groups to serve as terminal for generating the interrupt factor, when interrupt for all 4 terminals is not required, interrupt request to the CPU will not be issued if the interrupt mask register (EIK1) is masked through the program.

*** OPTION NO.6 ***

KEY INTERRUPT ( K10-K13 ) 1. K10

2. K10, K11 3. K10, K11, K12 4. K10, K11, K12, K13 PLEASE SELECT NO.(4)? 1

1. K10 SELECTED

In the message prompting entry, enter the value correspond-ing to the option to be selected. When " " alone is pressed, the value in parentheses at the message prompt will be selected.

In the above display screen sample, "1" is entered to select

"K10" as the option. In return, the confirmation is displayed that "K10" has been selected.

Input interrupt (K10–

K13)

In order to prevent occurrence to the input terminal of inter-rupt errors due to noise or chattering, the K00–K03 input interrupt circuit has built-in noise rejector based on 5 types of frequency. Moreover, when high speed response is re-quired for input interrupt, "NOT USE" may be selected for the noise rejector.

*** OPTION NO.7 ***

INTERRUPT NOISE REJECTOR ( K00-K03 ) 1. USE

2. NOT USE PLEASE SELECT NO.(1)? 1

1. USE SELECTED

In the message prompting entry, enter the value correspond-ing to the option to be selected. When " " alone is pressed, the value in parentheses at the message prompt will be selected.

In the above display screen sample, "1" is entered to select

"USE" as the option. In return, the confirmation is displayed that "USE" has been selected.

SPECIFICATION

Input interrupt noise rejector (K00–K03)

SELECTION PROCEDURE

CHAPTER 3: OPTION GENERATOR OPERATION PROCEDURE

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OPG6266

SPECIFICATION In order to prevent occurrence to the input terminal of inter-rupt errors due to noise or chattering, the K10–K13 input interrupt circuit has built-in noise rejector based on 5 types of frequency. Moreover, when high speed response is re-quired for input interrupt, "NOT USE" may be selected for the noise rejector.

*** OPTION NO.8 ***

INTERRUPT NOISE REJECTOR ( K10-K13 ) 1. USE

2. NOT USE PLEASE SELECT NO.(1)? 1

1. USE SELECTED

In the message prompting entry, enter the value correspond-ing to the option to be selected. When " " alone is pressed, the value in parentheses at the message prompt will be selected.

In the above display screen sample, "1" is entered to select

"USE" as the option. In return, the confirmation is displayed that "USE" has been selected.

Input interrupt noise rejector (K10–K13)

SELECTION PROCEDURE

Select the sampling frequency for the input interrupt noise rejector. Depending on the selection, K00–K13 will have the same sampling frequencies.

*** OPTION NO.9 ***

INTERRUPT NOISE REJECT FREQUENCY 1. 3.2K [HZ]

2. 1.6K [HZ]

3. 800 [HZ]

4. 400 [HZ]

5. 200 [HZ]

PLEASE SELECT NO.(1) ? 1

1. 3.2K [HZ] SELECTED

In the message prompting entry, enter the value correspond-ing to the option to be selected. When " " alone is pressed, the value in parentheses at the message prompt will be selected.

In the above display screen sample, "1" is entered to select

"3.2K [Hz]" as the option for the input interrupt noise reject frequency. In return, the confirmation is displayed that

"3.2K [Hz]" has been selected for the input interrupt noise reject frequency.

Input interrupt noise reject frequency

SPECIFICATION

SELECTION PROCEDURE

CHAPTER 3: OPTION GENERATOR OPERATION PROCEDURE

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OPG6266

In order to prevent occurrence to the event counter input terminal of interrupt errors due to noise or chattering, the input circuit has built-in noise rejector based on 5 types of frequency. Moreover, when high speed input signal counting is required, "NOT USE" may be selected for the noise rejector.

*** OPTION NO.10 ***

EVENT COUNTER NOISE REJECTOR 1. USE

2. NOT USE PLEASE SELECT NO.(1) ? 1

1. USE SELECTED

In the message prompting entry, enter the value correspond-ing to the option to be selected. When " " alone is pressed, the value in parentheses at the message prompt will be selected.

In the above display screen sample, "1" is entered to select

"USE" as the option for the the event counter noise rejector.

In return, the confirmation is displayed that "USE" has been selected for the event counter noise rejector.

Event counter noise

Im Dokument CMOS 4-BIT SINGLE CHIP MICROCOMPUTER (Seite 91-97)

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