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EM78P346N 数据表(PDF) 42 Page - ELAN Microelectronics Corp |
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EM78P346N 数据表(HTML) 42 Page - ELAN Microelectronics Corp |
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42 / 96 page  EM78P346N 8-Bit Microprocessor with OTP ROM 36 • Product Specification (V1.0) 12.25.2007 (This specification is subject to change without further notice) Case [c] If Comparator output status change is used to wake up the EM78P346N and the CMPWE bit of the RE register is enabled before SLEP, WDT must be disabled by software. Hence, the EM78P346N can be awakened only with Case 4. Wake-up time is dependent on oscillator mode. In RC mode the reset time is 32 clocks (for stable oscillators). In High Crystal mode, wake-up time is 0.8ms (HXT2, 4MHz), no matter what the oscillator type or mode is (except when it’s in low Crystal mode). In low Crystal mode, wake-up time is 2s~3s. Case [d] If AD conversion completed status is used to wake up the EM78P346N and ADWE bit of the RE register is enabled before SLEP, WDT must be disabled by software. Hence, the EM78P346N can be awakened only with Case 5. The wake-up time is 15 TAD (ADC clock period). Case [e] If Low voltage detector is used to wake up the EM78P346N and LVDWE bit of BANK0-RE register is enabled before SLEP, WDT must be disabled by software. Hence, the EM78P346N can be awakened only with Case 6. Wake-up time is dependent on oscillator mode. In RC mode the reset time is 32 clocks (for stable oscillators). In High Crystal mode, wake-up time is 0.8ms (HXT2, 4MHz), no matter what the oscillator type or mode is (except when it’s in low Crystal mode). In low Crystal mode, wake-up time is 2s~3s. If Port 6 Input Status Change Interrupt is used to wake up the EM78P346N (as in Case [b] above), the following instructions must be executed before SLEP: BC R3, 7 ; Select Segment 0 MOV A, @001110xxb ; Select WDT prescaler and Disable WDT IOW IOCE0 WDTC ; Clear WDT and prescaler MOV R6, R6 ; Read Port 6 ENI (or DISI) ; Enable (or disable) global interrupt MOV A, @00000x1xb ; Enable Port 6 input change wake-up bit MOV RE MOV A, @00000x1xb ; Enable Port 6 input change interrupt IOW IOCF0 SLEP ; Sleep Similarly, if the Comparator Interrupt is used to wake up the EM78P346N (as in Case [c] above), the following instructions must be executed before SLEP: BC R3, 7 ; Select Segment 0 MOV A, @xxxxxx10b ; Select an comparator and P60 act as CO pin IOW IOCA0 MOV A, @001110xxb ; Select WDT prescaler and Disable WDT IOW IOCE0 WDTC ; Clear WDT and prescaler ENI (or DISI) ; Enable (or disable) global interrupt MOV A, @000001xxb ; Enable comparator output status change wake-up bit MOV RE MOV IOW A, @000001xxb IOCF0 ; Enable comparator output status change interrupt SLEP ; Sleep |
类似零件编号 - EM78P346N |
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类似说明 - EM78P346N |
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