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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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UPSD325X датащи(PDF) 156 Page - STMicroelectronics |
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UPSD325X датащи(HTML) 156 Page - STMicroelectronics |
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156 / 176 page  µPSD325X DEVICES 156/176 Table 119. External Data Memory AC Characteristics (with the 3V MCU Module) Note: 1. Conditions (in addition to those in Table 110, VCC = 3.0 to 3.6V): VSS = 0V; CL for Port 0, ALE and PSEN output is 100pF, for 5V devices, and 50pF for 3V devices; CL for other outputs is 80pF, for 5V devices, and 50pF for 3V devices) Table 120. A/D Analog Specification Symbol Parameter1 24MHz Oscillator Variable Oscillator 1/tCLCL = 8 to 24MHz Unit Min Max Min Max tRLRH RD pulse width 180 6tCLCL – 70 ns tWLWH WR pulse width 180 6tCLCL – 70 ns tLLAX2 Address hold after ALE 56 2tCLCL – 27 ns tRHDX RD to valid data in 118 5tCLCL – 90 ns tRHDX Data hold after RD 00 ns tRHDZ Data float after RD 63 2tCLCL – 20 ns tLLDV ALE to valid data in 200 8tCLCL – 133 ns tAVDV Address to valid data in 220 9tCLCL – 155 ns tLLWL ALE to WR or RD 75 175 3tCLCL – 50 tCLCL + 50 ns tAVWL Address valid to WR or RD 67 4tCLCL – 97 ns tWHLH WR or RD High to ALE High 17 67 tCLCL – 25 tCLCL + 25 ns tQVWX Data valid to WR transition 5 tCLCL – 37 ns tQVWH Data set-up before WR 170 7tCLCL – 122 ns tWHQX Data hold after WR 15 tCLCL – 27 ns tRLAZ Address float after RD 00 ns Symbol Parameter Test Condition Min. Typ. Max. Unit AVREF Analog Power Supply Input Voltage Range VSS VCC V VAN Analog Input Voltage Range VSS – 0.3 AVREF + 0.3 V IAVDD Current Following between VCC and VSS 200 µA CAIN Overall Accuracy ±2 l.s.b. NNLE Non-Linearity Error ±2 l.s.b. NDNLE Differential Non-Linearity Error ±2 l.s.b. NZOE Zero-Offset Error ±2 l.s.b. NFSE Full Scale Error ±2 l.s.b. NGE Gain Error ±2 l.s.b. TCONV Conversion Time at 8MHz clock 20 µs |
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