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ST7MC1 数据表(PDF) 138 Page - STMicroelectronics |
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ST7MC1 数据表(HTML) 138 Page - STMicroelectronics |
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138 / 308 page  ST7MC1/ST7MC2 138/308 MOTOR CONTROLLER (Cont’d) Table 23. MTC Registers 10.6.2 Main Features ■ Two on-chip analog comparators, one for BEMF zero-crossing detection, the other for current regulation or limitation ■ Seven selectable reference voltages for the hysteresis comparator (0.2 V, 0.6 V, 1 V, 1.5 V, 2 V, 2.5 V, 3.5 V) and the possibility to select an external reference pin (MCVREF). ■ 8-bit timer (MTIM) with three compare registers and two capture features, which may be used as the Delay manager of a speed measurement unit ■ Measurement window generator for BEMF zero-crossing detection ■ Filter option for the zero-crossing detection. ■ Auto-calibrated prescaler with 16 division steps ■ 8x8-bit multiplier ■ Phase input multiplexer ■ Sophisticated output management: – The six output channels can be split into two groups (high & low) – The PWM signal can be multiplexed on high, low or both groups, alternatively or simultane- ously, for six-step motor drives – 12-bit PWM generator with full modulation ca- pability (0 and 100% duty cycle), edge or cent- er-aligned patterns – Dedicated interrupt for PWM duty cycles up- dating and associated PWM repetition coun- ter. – Programmable deadtime insertion unit. – Programmable High frequency Chopper in- sertion and high current PWM outputs for di- rect optocoupler drives. – The output polarity is programmable channel by channel. – A programmable bit (active low) forces the outputs in HiZ, Low or High state, depending on option byte 1 (refer to “ST7FMC Device Configuration And Ordering Information” sec- tion). – An “emergency stop” input pin (active low) asynchronously forces the outputs in HiZ, Low or High state, depending on option byte 1 (re- fer to “ST7FMC Device Configuration And Or- dering Information” section). Register Description Register page (RPGS bit) Page MTIM Timer Counter Register 0 206 MTIML Timer LSB (mode depend- ent) 0 206 MZPRV Capture Zn-1 Register 0 206 MZREG Capture Zn Register 0 206 MCOMP Compare Cn+1 Register 0 206 MDREG Demagnetization Reg. 0 206 MWGHT An Weight Register 0 207 MPRSR Prescaler & Sampling Reg. 0 207 MIMR Interrupt Mask Register 0 207 MISR Interrupt Status Register 0 208 MCRA Control Register A 0 209 MCRB Control Register B 0 211 MCRC Control Register C 0 212 MPHST Phase State Register 0 213 MDFR D Event Filter Register 0 215 MCFR Current Feedback Filter Register 0 214 MREF Reference register 0 216 MPCR PWM Control Register 0 217 MREP Repetition Counter Reg. 0 218 MCPWH Compare W Register High 0 218 MCPWL Compare W Register Low 0 218 MCPVH Compare V Register High 0 218 MCPVL Compare V Register Low 0 218 MCPUH Compare U Register High 0 219 MCPUL Compare U Register Low 0 219 MCP0H Compare 0 Register High 0 219 MCP0L Compare 0 Register Low 0 219 MDTG Dead Time Generator reg. 1 220 MPOL Polarity Register 1 221 MPWME PWM register 1 222 MCONF Configuration register 1 223 MPAR Parity register 1 224 MZFR Z Event Filter Register 1 225 MSCR Sampling Clock Register 1 226 1 |
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