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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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EM73880 Fiches technique(PDF) 19 Page - ELAN Microelectronics Corp |
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EM73880 Fiches technique(HTML) 19 Page - ELAN Microelectronics Corp |
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19 / 40 page  19 * This specification are subject to be changed without notice. EM73880 EM73880 EM73880 EM73880 EM73880 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT 4-BIT MICRO-CONTROLLER FOR LCD PRODUCT 11.30.2001 Preliminary Preliminary Preliminary Preliminary Preliminary The value of 8-bit binary up counter can be presetted by P10 and P11. The value of registers can loaded into the HTC when the counter starts counting or occurs overflow. If user write value to the registers before the next overflow occurs, the preset value can be changed. The preset value will be changed when users output the different data to P10. Thus, the data must be output to P11 before P10 when users want to change the preset value. The count value of HTC can be read from P10 and P11. The value is unstable when user read the value during counting. Thus, user must disable the counter before reading the value. The P4.1/RGH pin will be the input pin in the event counter and pulse width measurement mode. User must output high to P4. 1/TRGH and then it can be the HTC external input pin. When the HTC is disabled, the P4. 1 pin is a normal I/O pin. INTERRUPT FUNCTION INTERRUPT FUNCTION INTERRUPT FUNCTION INTERRUPT FUNCTION INTERRUPT FUNCTION There are 6 interrupt sources, 2 external interrupt sources, 4 internal interrupt sources . Multiple interrupts are admitted according the priority . Type Type Type Type Type Interrupt source Interrupt source Interrupt source Interrupt source Interrupt source Priority Priority Priority Priority Priority Interrupt Interrupt Interrupt Interrupt Interrupt Interrupt Interrupt Interrupt Interrupt Interrupt Program ROM Program ROM Program ROM Program ROM Program ROM Latch Latch Latch Latch Latch Enable condition Enable condition Enable condition Enable condition Enable condition entry address entry address entry address entry address entry address External External interrupt(INT0) 1 IL5 EI=1 002H Internal High speed timer overflow interrupt (HTCI) 2 IL4 EI=1, MASK3=1 004H Internal TimerA overflow interrupt (TRGA) 3 IL3 EI=1, MASK2=1 006H Internal TimerB overflow interrupt (TRGB) 4 IL2 EI=1, MASK1=1 008H Internal Time base interrupt(TBI) 5 IL1 00AH Internal SPI (Speech interrupt) 6 IL0 EI=1,MASK0=1 00CH INTERRUPT STRUCTURE INTERRUPT STRUCTURE INTERRUPT STRUCTURE INTERRUPT STRUCTURE INTERRUPT STRUCTURE Reset by system reset and program instruction MASK0 MASK1 MASK1 MASK2 MASK3 IL0 SPI r0 IL1 TBI r1 IL2 r2 IL3 TRGA r3 IL4 r4 IL5 INT0 r5 Priority checker EI Entry address generator Interrupt request Interrupt entry address Reset by system reset and program instruction Set by program instruction TRGB HTCI |
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