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ST7LITEUSX Datasheet(PDF) 71 Page - STMicroelectronics |
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ST7LITEUSX Datasheet(HTML) 71 Page - STMicroelectronics |
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71 / 108 page  ST7LITEUSx 71/108 OPERATING CONDITIONS (Cont’d) 12.3.4 Voltage drop between AVD flag set and LVD reset generation Note: 1. Not tested in production, guaranteed by characterization. 12.3.5 Internal RC oscillator 12.3.5.1 Internal RC oscillator calibrated at 5.0V The ST7 internal clock can be supplied by an internal RC oscillator (selectable by option byte). Notes: 1. See “INTERNAL RC OSCILLATOR ADJUSTMENT” on page 17 2. Guaranteed by Design. To improve clock stability and frequency accuracy, it is recommended to place a decoupling capacitor, typically 100nF, between the VDD and VSS pins as close as possible to the ST7 device Parameter Min 1) Typ 1) Max 1) Unit AVD med. Threshold - AVD low. threshold 700 950 1200 mV AVD high. Threshold - AVD low threshold 900 1150 1400 AVD high. Threshold - AVD med. threshold 100 200 300 AVD low Threshold - LVD low threshold 0 100 300 AVD med. Threshold - LVD low threshold 800 1000 1300 AVD med. Threshold - LVD med. threshold 50 200 300 AVD high. Threshold - LVD low threshold 850 1250 1700 AVD high. Threshold - LVD med. threshold 200 400 600 Symbol Parameter Conditions Min Typ Max Unit fRC Internal RC oscillator frequency RCCR = FF (reset value), TA=25°C,VDD=5V 4.5 MHz RCCR = RCCR01),TA=25°C,VDD=5V 8 ACCRC Accuracy of Internal RC oscillator with RCCR=RCCR01) TA=25°C, VDD=5V -2 +2 % TA=25°C, VDD=4.5 to 5.5V -3 +3 % TA=0 to +85°C, VDD=5V -3.5 +4.5 % TA=0 to +85°C, VDD=4.5 to 5.5V -4 +5 % TA=0 to +125°C, VDD=5V -3.5 +6 % TA=0 to +125°C, VDD=4.5 to 5.5V -5 +7 % TA=-40°C to 0°C, VDD=4.5 to 5.5V -6 +5 % IDD(RC) RC oscillator current consumption TA=25°C, VDD=5V 900 2) µA tsu(RC) RC oscillator setup time TA=25°C, VDD=5V 4 2) µs 1 |
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