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RA4C1 Datasheet(PDF) 62 Page - Renesas Technology Corp |
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RA4C1 Datasheet(HTML) 62 Page - Renesas Technology Corp |
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62 / 97 page  2.4 ADC12 Characteristics VREFH0 5.0 4.0 3.0 2.0 1.0 1.0 2.0 3.0 4.0 5.0 A/D Conversion Characteristics (2) ADCSR.ADHSC = 0 2.7 2.4 2.4 2.7 AVCC0 VREFH0 5.0 4.0 3.0 2.0 1.0 1.0 2.0 3.0 4.0 5.0 ADCSR.ADHSC = 1 3.6 2.4 2.4 2.7 AVCC0 1.8 1.8 A/D Conversion Characteristics (3) A/D Conversion Characteristics (4) A/D Conversion Characteristics (5) A/D Conversion Characteristics (6) A/D Conversion Characteristics (7) 1.6 1.6 3.6 3.6 3.6 A/D Conversion Characteristics (1) Figure 2.43 AVCC0 to VREFH0 voltage range Table 2.46 A/D conversion characteristics (1) in high-speed A/D conversion mode Conditions: VCC = AVCC0 = VREFH0 = 2.7 to 3.6 V*5, VSS = AVSS0 = VREFL0 = 0 V Reference voltage range applied to the VREFH0 and VREFL0. Parameter Min Typ Max Unit Test conditions PCLKC (ADCLK) frequency 1 — 48 MHz — Analog input capacitance*2 Cs — — 9*3 pF High-precision channel — — 10*3 pF Normal-precision channel Analog input resistance Rs — — 1.9*3 kΩ High-precision channel — — 6.0*3 kΩ Normal-precision channel Analog input voltage range Ain 0 — VREFH0 V — Resolution — — 12 Bit — Conversion time*1 (Operation at PCLKC = 48 MHz) Permissible signal source impedance Max. = 0.3 kΩ 0.67 (0.219)*4 — — µs High-precision channel ADCSR.ADHSC = 0 ADSSTRn.SST[7:0] = 0x0A ADACSR.ADSAC = 1 1.29 (0.844)*4 — — µs Normal-precision channel ADCSR.ADHSC = 0 ADSSTRn.SST[7:0] = 0x28 ADACSR.ADSAC = 1 Offset error — ±1.0 ±5.5 LSB High-precision channel ±7.0 LSB Other than specified Full-scale error — ±1.0 ±5.5 LSB High-precision channel ±7.0 LSB Other than specified Quantization error — ±0.5 — LSB — Absolute accuracy — ±2.5 ±6.0 LSB High-precision channel ±9.0 LSB Other than specified DNL differential nonlinearity error — ±1.0 — LSB — INL integral nonlinearity error — ±1.5 ±3.0 LSB — Note: The characteristics apply when no pin functions other than 12-bit A/D converter input are used. Absolute accuracy does not include quantization errors. Offset error, full-scale error, DNL differential nonlinearity error, and INL integral nonlinearity error do not include quantization errors. Note 1. The conversion time is the sum of the sampling time and the comparison time. The number of sampling states is indicated for the test conditions. RA4C1 Datasheet 2. Electrical Characteristics R01DS0457EJ0110 Rev.1.10 Jul 4, 2025 Page 62 of 97 |
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