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ST92141 Scheda tecnica(PDF) 10 Page - STMicroelectronics |
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ST92141 Scheda tecnica(HTML) 10 Page - STMicroelectronics |
10 / 179 page 10/179 ST92141 - GENERAL DESCRIPTION 9 Table 1. Power Supply Pins Table 2. Primary Function pins Name Function VPP Programming voltage for EPROM/OTP devices. Must be connected to VSS in user mode. 24 25 VDD Main power supply voltage (5V ± 10% (2 pins internally connected) 17 18 11 VSS Digital Circuit Ground (2 pins in- ternally connected) 18 19 32 34 AVDD Analog VDD of the Analog to Digit- al Converter 910 AVSS Analog VSS of the Analog to Digit- al Converter 10 11 Name Function TACHO Signal input from a tachogenera- tor to the IMC controller for measuring the rotor speed 31 33 UH U-phase PWM output signal 26 28 VH V-phase PWM output signal 30 32 WH W-phase PWM output signal 28 30 UL The complemented UH, VH, WH output signals with added dead time to avoid crossover conduc- tion from the power driver 25 27 VL 29 31 WL 27 29 RESET Reset (input, active low). The ST9+ is initialised by the Reset signal. With the deactivation of RESET, program execution be- gins from the memory location pointed to by the vector con- tained in memory locations 00h and 01h 21 22 OSCIN OSCIN is the input of the oscilla- tor inverter and internal clock generator. OSCIN and OSCOUT connect a parallel-resonant crys- tal (3 to 5 MHz), or an external source to the on-chip clock oscil- lator and buffer 19 20 OSCOUT OSCOUT is the output of the os- cillator inverter 20 21 |
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