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MCP4142T Datasheet(PDF) 11 Page - Microchip Technology |
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MCP4142T Datasheet(HTML) 11 Page - Microchip Technology |
11 / 88 page © 2008 Microchip Technology Inc. DS22059B-page 11 MCP414X/416X/424X/426X 1.1 SPI Mode Timing Waveforms and Requirements FIGURE 1-1: SPI Timing Waveform (Mode = 11). TABLE 1-1: SPI REQUIREMENTS (MODE = 11) # Characteristic Symbol Min Max Units Conditions SCK Input Frequency FSCK —10 MHz VDD = 2.7V to 5.5V —1 MHz VDD = 1.8V to 2.7V 70 CS Active (VIL or VIHH) to SCK↑ input TcsA2scH 60 — ns 71 SCK input high time TscH 45 — ns VDD = 2.7V to 5.5V 500 — ns VDD = 1.8V to 2.7V 72 SCK input low time TscL 45 — ns VDD = 2.7V to 5.5V 500 — ns VDD = 1.8V to 2.7V 73 Setup time of SDI input to SCK ↑ edge TDIV2scH 10 — ns 74 Hold time of SDI input from SCK ↑ edge TscH2DIL20 — ns 77 CS Inactive (VIH) to SDO output hi-impedance TcsH2DOZ — 50 ns Note 1 80 SDO data output valid after SCK ↓ edge TscL2DOV — 70 ns VDD = 2.7V to 5.5V 170 ns VDD = 1.8V to 2.7V 83 CS Inactive (VIH) after SCK↑ edge TscH2csI 100 — ns VDD = 2.7V to 5.5V 1ms VDD = 1.8V to 2.7V 84 Hold time of CS Inactive (VIH) to CS Active (VIL or VIHH) TcsA2csI 50 — ns Note 1: This specification by design. CS SCK SDO SDI 70 71 72 73 74 75, 76 77 78 79 80 SDI MSb LSb BIT6 - - - - - -1 MSb IN BIT6 - - - -1 LSb IN 83 84 VIH VIL VIHH VIH |
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