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R8C3GA Datasheet(PDF) 29 Page - Renesas Technology Corp |
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R8C3GA Datasheet(HTML) 29 Page - Renesas Technology Corp |
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29 / 56 page  R8C/3GA Group 5. Electrical Characteristics REJ03B0235-0110 Rev.1.10 Sep. 10, 2009 Page 29 of 53 Notes: 1. VCC/AVCC = Vref = 2.2 to 5.5 V, VSS = 0 V at Topr = −20 to 85°C (N version) / −40 to 85°C (D version), unless otherwise specified. 2. When the CPU and flash memory stop, the A/D conversion result will be undefined. 3. When the analog input voltage is over the reference voltage, the A/D conversion result will be 3FFh in 10-bit mode and FFh in 8-bit mode. Table 5.3 A/D Converter Characteristics (1) Symbol Parameter Conditions Standard Unit Min. Typ. Max. − Resolution Vref = AVCC −− 10 Bit − Absolute accuracy 10-bit mode Vref = AVCC = 5.0 V AN0, AN1, AN5, AN6 input, AN8 to AN11 input −− ±3 LSB Vref = AVCC = 3.3 V AN0, AN1, AN5, AN6 input, AN8 to AN11 input −− ±5 LSB Vref = AVCC = 3.0 V AN0, AN1, AN5, AN6 input, AN8 to AN11 input −− ±5 LSB Vref = AVCC = 2.2 V AN0, AN1, AN5, AN6 input, AN8 to AN11 input −− ±5 LSB 8-bit mode Vref = AVCC = 5.0 V AN0, AN1, AN5, AN6 input, AN8 to AN11 input −− ±2 LSB Vref = AVCC = 3.3 V AN0, AN1, AN5, AN6 input, AN8 to AN11 input −− ±2 LSB Vref = AVCC = 3.0 V AN0, AN1, AN5, AN6 input, AN8 to AN11 input −− ±2 LSB Vref = AVCC = 2.2 V AN0, AN1, AN5, AN6 input, AN8 to AN11 input −− ±2 LSB φAD A/D conversion clock 4.0 V ≤ Vref = AVCC ≤ 5.5 V (2) 2 − 20 MHz 3.2 V ≤ Vref = AVCC ≤ 5.5 V (2) 2 − 16 MHz 2.7 V ≤ Vref = AVCC ≤ 5.5 V (2) 2 − 10 MHz 2.2 V ≤ Vref = AVCC ≤ 5.5 V (2) 2 − 5MHz − Tolerance level impedance − 3 − k Ω DNL Differential non-linearity error −− ±1 LSB tCONV Conversion time 10-bit mode Vref = AVCC = 5.0 V, φAD = 20 MHz 2.15 −− µs 8-bit mode Vref = AVCC = 5.0 V, φAD = 20 MHz 2.15 −− µs tSAMP Sampling time φAD = 20 MHz 0.75 −− µs IVref Vref current VCC = 5.0 V, XIN = f1 = φAD = 20 MHz − 45 −µA Vref Reference voltage 2.2 − AVCC V VIA Analog input voltage (3) 0 − Vref V |
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