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AMIS-30522ANA Datasheet(PDF) 6 Page - AMI SEMICONDUCTOR |
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AMIS-30522ANA Datasheet(HTML) 6 Page - AMI SEMICONDUCTOR |
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6 / 28 page  AMIS-30522 Micro-stepping Motor Driver Data Sheet 6.4 AC Parameters The AC parameters are given for VBB and temperature in their operating ranges. Table 6: AC Parameters Symbol Pin(s) Parameter Remark/Test Conditions Min. Typ. Max. Unit Internal Oscillator fosc Frequency of internal oscillator 3.6 4 4.4 MHz Motordriver PWM frequency 20.8 22.8 24.8 kHz fPWM Double PWM frequency Frequency depends only on internal oscillator 41.6 45.6 49.6 kHz fj PWM jitter frequency tbd Hz fd MOTxx PWM jitter Depth tbd % fPWM EMC[1:0] = 00 150 V/µs EMC[1:0] = 01 100 V/µs EMC[1:0] = 10 50 V/µs Tbrise MOTxx Turn-on voltage slope, 10% to 90% EMC[1:0] = 11 25 V/µs EMC[1:0] = 00 150 V/µs EMC[1:0] = 01 100 V/µs EMC[1:0] = 10 50 V/µs Tbfall MOTxx Turn-off voltage slope, 90% to 10% EMC[1:0] = 11 25 V/µs Digital Outputs TH2L DO ERRB Output fall-time from VinH to VinL Capacitive load 400pF and pull- up resistor of 1.5 k Ω 50 ns Charge Pump fCP CPN CPP Charge pump frequency 250 kHz TCPU MOTxx Start-up time of charge pump Spec external components CLR Function TCLR CLR Hard reset duration time 20 90 µs Power-Up tPU Power-up time VBB=12V, ILOAD=50mA, CLOAD=220nF 110 µs tPD Power-down time External conditions tbd ms tPOR Reset duration 100 ms tRF PORB/ WD Reset filter time 1 µs Watchdog tWDTO Watchdog time out interval 32 512 ms tWDPR Prohibited watchdog acknowledge delay 2 ms tWDRD PORB/ WD Watchdog reset delay tbd µs 6.5 SPI Timing Table 7: SPI Timing Parameters Symbol Parameter Min. Typ. Max. Unit tCLK SPI clock period 1 µs tCLK_HIGH SPI clock high time 100 ns tCLK_LOW SPI clock low time 100 ns tSET_DI DI set up time, valid data before rising edge of CLK 50 ns tHOLD_DI DI hold time, hold data after rising edge of CLK 50 ns tCSB_HIGH CSB high time 2.5 µs tSET_CSB CSB set up time, CSB low before rising edge of CLK 100 ns tSET_CLK CLK set up time, CLK low before rising edge of CSB 100 ns 6 AMI Semiconductor – June 2007, M-20684-001 www.amis.com |
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