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STM32U073RCT6 Datasheet(PDF) 103 Page - STMicroelectronics |
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STM32U073RCT6 Datasheet(HTML) 103 Page - STMicroelectronics |
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103 / 146 page  Symbol Parameter Conditions Min Typ Max Unit V12 V Segment/Common 1/2 level voltage - 1/2 VLCD - V13 Segment/Common 1/3 level voltage - 1/3 VLCD - V14 Segment/Common 1/4 level voltage - 1/4 VLCD - V0 Segment/Common lowest level voltage - 0 - 1. LCD enabled with 3 V internal step-up active, 1/8 duty, 1/4 bias, division ratio= 64, all pixels active, no LCD connected. 6.3.26 Timer characteristics The parameters given in the following tables are specified by design, and not tested in production. Refer to Section 6.3.14: I/O port characteristics for details on the input/output alternate function characteristics (output compare, input capture, external clock, PWM output). Table 82. TIMx characteristics TIMx, is used as a general term in which x stands for 1,2,3,4,5,6,7,8,15,16 or 17. Symbol Parameter Conditions Min Max Unit tres(TIM) Timer resolution time - 1 - tTIMxCLK fTIMxCLK = 48 MHz 20.8 - ns fEXT Timer external clock frequency on CH1 to CH4 - 0 fTIMxCLK/2 MHz fTIMxCLK = 48 MHz 0 24 MHz ResTIM Timer resolution TIMx (except TIM2) - 16 bit TIM2 - 32 tCOUNTER 16-bit counter clock period - 1 65536 tTIMxCLK fTIMxCLK = 48 MHz 0.0208 1363.1 µs tMAX_COUNT Maximum possible count with 32-bit counter - - 65536 × 65536 tTIMxCLK fTIMxCLK = 48 MHz - 89.34 s Table 83. IWDG min/max timeout period at 32 kHz (LSI) The exact timings still depend on the phasing of the APB interface clock versus the LSI clock so that there is always a full RC period of uncertainty. Prescaler divider PR[2:0] bits Min timeout RL[11:0]= 0x000 Max timeout RL[11:0]= 0xFFF Unit /4 0 0.125 512 ms /8 1 0.250 1024 /16 2 0.500 2048 /32 3 1.0 4096 /64 4 2.0 8192 /128 5 4.0 16384 /256 6 or 7 8.0 32768 Table 84. WWDG min/max timeout at 56 MHz (PCLK) Prescaler WDGTB Min timeout value Max timeout value Unit 1 0 0.0358 2.2938 ms 2 1 0.0717 4.5875 4 2 0.1434 9.1750 STM32U073x8/B/C Electrical characteristics DS14548 - Rev 2 page 103/146 |
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