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ST7L15 数据表(PDF) 108 Page - STMicroelectronics |
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ST7L15 数据表(HTML) 108 Page - STMicroelectronics |
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108 / 138 page  ST7L15, ST7L19 108/138 SUPPLY CURRENT CHARACTERISTICS (cont’d) 13.4.2 On-chip Peripherals Notes: 1. Data based on a differential IDD measurement between reset configuration (timer stopped) and a timer running in PWM mode at fCPU =8 MHz. 2. Data based on a differential IDD measurement between reset configuration and a permanent SPI master communica- tion (data sent equal to 55h). 3. Data based on a differential IDD measurement between reset configuration and continuous A/D conversions. 13.5 CLOCK AND TIMING CHARACTERISTICS Subject to general operating conditions for VDD, fOSC and TA. 13.5.1 General Timings Notes: 1. Guaranteed by Design. Not tested in production. 2. Data based on typical application software. 3. Time measured between interrupt event and interrupt vector fetch. Dtc(INST) is the number of tCPU cycles needed to finish the current instruction execution. 13.5.2 Auto Wake-Up from Halt Oscillator (AWU)1) Notes: 1. Guaranteed by Design. Not tested in production. Symbol Parameter Conditions Typ Unit IDD(AT) 12-bit Auto-Reload Timer supply current1) fCPU =4 MHz VDD = 3.3V 150 µA fCPU =8 MHz VDD = 5V 1000 IDD(SPI) SPI supply current2) fCPU =4 MHz VDD = 3.3V 50 fCPU =8 MHz VDD = 5V 200 IDD(ADC) ADC supply current when converting3) fADC =4 MHz VDD = 3.3V 250 VDD = 5V 1100 Symbol Parameter1) Conditions Min Typ2) Max Unit tc(INST) Instruction cycle time fCPU =8 MHz 23 12 tCPU 250 375 1500 ns tv(IT) Interrupt reaction time3) tv(IT) = ∆tc(INST) + 10 10 22 tCPU 1.25 2.75 µs Symbol Parameter Conditions Min Typ Max Unit fAWU AWU oscillator frequency 50 125 250 kHz tRCSRT AWU oscillator start-up time 50 µs |
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