ML63611 User’s Manual
Chapter 10 Ports (INPUT, I/O PORT)
10 – 31
OPTION B (D): 1.5 V (3.0 V), With regulator
circuit for LCD bias
OPTION A (C): 1.5 V (3.0 V), Without regulator
circuit for LCD bias
10.7.3 Port E.3 External Interrupt Function (External Interrupt 2)
Port E.3 has external interrupt 2 allocated as secondary function.
External interrupt generation for PE.3 is triggered by the falling edge of the 128 Hz or 4 kHz time base counter,
which is the sampling clock.
After the port level changes, the interrupt request signal (XI2INT) is output, and the interrupt request flag (QXI2)
is set. The maximum delay for this sequence is one cycle of the sampling clock (128 Hz or 4 kHz).
The interrupt start address for external interrupt 2 is 0018H.
Figure 10-16 shows the equivalent circuit for external interrupt 2 control.
Figure 10-16 External Interrupt 2 Control Equivalent Circuit
Figure 10-17 shows the external interrupt 2 generation timing.
Figure 10-17 External Interrupt 2 Generation Timing
QXI2
XI2INT
PE.3
128 Hz or
4 kHz
Level change
detect circuit
128 Hz
4 kHz
PEMOD
PEF
IE1.0
IE1
EXI2
to interrupt priority
encoder
IRQ1.0
IRQ1
QXI2
XI2INT
PE.3
Содержание ML63611
Страница 9: ...Chapter 1 Overview...
Страница 33: ...Chapter 2 CPU and Memory Spaces...
Страница 42: ...Chapter 3 CPU Control Functions...
Страница 49: ...Chapter 4 Interrupt INT...
Страница 62: ...Chapter 5 Clock Generator Circuit OSC...
Страница 71: ...Chapter 6 Time Base Counter TBC...
Страница 75: ...Chapter 7 Timers TIMER...
Страница 99: ...Chapter 8 100 Hz Timer Counter 100HzTC...
Страница 103: ...Chapter 9 Watchdog Timer WDT...
Страница 108: ...Chapter 10 Ports INPUT I O PORT...
Страница 140: ...Chapter 11 Melody Driver MELODY...
Страница 152: ...Chapter 12 Serial Port SIO...
Страница 179: ...Chapter 13 LCD Driver LCD...
Страница 200: ...Chapter 14 Battery Low Detect Circuit BLD...
Страница 204: ...Chapter 15 Power Supply Circuit POWER...
Страница 215: ...Chapter 16 A D Converter ADC...
Страница 238: ...Appendixes...
Страница 271: ...ML63611 User s Manual First Edition May 2001 Second Edition June 2001 2001 Oki Electric Industry Co Ltd PEUL63611 02...