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AS5140HASST 数据表(PDF) 10 Page - ams AG |
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AS5140HASST 数据表(HTML) 10 Page - ams AG |
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10 / 37 page  www.austriamicrosystems.com/AS5140H Revision 1.4 10 - 37 AS5140H Data Sheet - E l e c t r i c a l C h a r a c t e r i s t i c s 6.5 Timing Characteristics TAMB = -40 to +150ºC, VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation), unless otherwise noted. Rprogrammed Programmed fuse resistance (log 1) 10µA max. current @ 100mV 100k Ω Runprogrammed Unprogrammed fuse resistance (log 0) 2mA max. current @ 100mV 50 100 Ω tPROG Programming time per bit Time to prog. a singe fuse bit 10 20 µs tCHARGE Refresh time per bit Time to charge the cap after tPROG 1µs fLOAD LOAD frequency Data can be loaded at n*2µs 500 kHz fREAD READ frequency Read the data from the latch 2.5 MHz fWRITE WRITE frequency Write the data to the latch 2.5 MHz Table 13. Synchronous Serial Interface (SSI) Symbol Parameter Conditions Min Typ Max Units tDO active Data output activated (logic high) Time between falling edge of CSn and data output activated 100 ns tCLK FE First data shifted to output register Time between falling edge of CSn and first falling edge of CLK 500 ns TCLK/2 Start of data output Rising edge of CLK shifts out one bit at a time 500 ns tDO valid Data output valid Time between rising edge of CLK and data output valid 413 ns tDO tristate Data output tristate After the last bit DO changes back to “tristate” 100 ns tCSn Pulse width of CSn CSn =high; To initiate read-out of next angular position 500 ns fCLK Read-out frequency Clock frequency to read out serial data >0 1 MHz Table 14. Pulse Width Modulation Output Symbol Parameter Conditions Min Typ Max Units fPWM PWM frequency Signal period = 1025µs ±5% at Tamb = 25ºC 0.927 0.976 1.024 kHz Signal period =1025µs ±10% at Tamb = -40 to +150ºC 0.878 0.976 1.074 PWMIN Minimum pulse width Position 0d; angle 0 degree 0.90 1 1.10 µs PWMAX Maximum pulse width Position 1023d; angle 359.65 degree 922 1024 1126 µs Table 15. Incremental Outputs Symbol Parameter Conditions Min Typ Max Units tIncremental outputs valid Incremental outputs valid after power-up Time between first falling edge of CSn after power-up and valid incremental outputs 500 ns tDir valid Directional indication valid Time between rising or falling edge of LSB output and valid directional indication 500 ns Table 12. Programming Conditions (Continued) Symbol Parameter Conditions Min Typ Max Units ∞ |
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