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MMA6255EGR2 Datasheet(PDF) 11 Page - Freescale Semiconductor, Inc |
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MMA6255EGR2 Datasheet(HTML) 11 Page - Freescale Semiconductor, Inc |
11 / 34 page MMA6222EG Sensors Freescale Semiconductor 11 2.4 CONTROL TIMING VL ≤ (VCC - VSS) ≤ VH, TL ≤ TA ≤ TH, |ΔTA| < 4 K/min unless otherwise specified Notes: 1. Functionality verified 100% via scan. Timing characteristic is directly determined by internal oscillator frequency. 2. Verified by characterization, not tested in production. 3. Parameters tested 100% at final test. 4. Parameters tested 100% at unit probe. 5. Devices are trimmed at 100 Hz with 1000 Hz low-pass filter option selected. 6. Cutoff frequencies shown are -4dB referenced to 0 Hz response, to correspond with previous specifications. Ref Characteristic Symbol Min Typ Max Units 106 107 DSP Low-Pass Filter (5) Cutoff frequency (6) DSP Low-Pass Filter Cutoff frequency (-3dB, referenced to 0 Hz) 380 335 400 353 420 371 Hz Hz (1) (1) 108 109 DSP High-Pass Filter Cutoff frequency Filter Order fC(HPF) OHPF 0.095 — 0.1 1 0.105 — Hz 1 (1) (1) 110 111 Power-On Recovery Time POR negated to CS low Power applied to XOUT, YOUT valid tOP tXY — — — — 840 10 μs ms (1) (2) 112 Internal Oscillator Frequency fOSC 3.8 4.0 4.2 MHz (3) 113 Clock Monitor Threshold fMON 3.6 — 4.4 MHz (1) 114 Chip Select to Internal Reset (See Figure 2-3) tCSRES 486 512 538 μs (1) 115 116 117 118 119 120 121 Serial Interface Timing (See Figure 2-4) Clock period CS asserted to SCLK high Data setup time Data hold time SCLK low to data out SCLK high to CS negated CS negated to CS asserted tSCLK tCSCLK tDC tCDIN tCDOUT tCHCSH tCSN 120 60 20 10 — 60 526 — — — — — — — — — — — 50 — — ns ns ns ns ns ns ns (1) (1) (1) (1) (1) (1) (1) 122 DAC Low-Pass Filter Cutoff Frequency fC 5 10 20 kHz (4) 123 Sensing Element Rolloff Frequency (-3 dB) BWGCELL — 3 — kHz (2) |
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