Datasheet

R01DS0190EJ0100 Rev.1.00 Page 89 of 107
Jun 19, 2013
RX111 Group 5. Electrical Characteristics
Note: • The characteristics apply when no pin functions other than A/D converter input are used. Absolute accuracy includes
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. As the test conditions, the number of sampling
states is indicated.
Note 2. The value in parentheses indicates the sampling time.
Note: • The characteristics apply when no pin functions other than A/D converter input are used. Absolute accuracy includes
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. As the test conditions, the number of sampling
states is indicated.
Note 2. The value in parentheses indicates the sampling time.
Table 5.37 A/D Conversion Characteristics (2)
Conditions: VCC = AVCC0 = VREFH0 = 2.4 to 2.7 V, VSS = AVSS0 = VREFL0 = VSS_USB = 0 V, PCLKD = 4 to 16 MHz,
T
a
= –40 to +105°C
Item Min. Typ. Max. Unit Test Conditions
Resolution
——12Bit
Conversion time*
1
(Operation at
fPCLKD = 16 MHz)
Permissible signal source
impedance (Max.) = 1.0 kΩ
2.062
(0.625)*
2
——µs
High-precision channel
ADCSR.ADHSC bit = 1
ADSSTRn.SST[7:0] bits = 09h
2.750
(1.313)*
2
——µs
Normal-precision channel
ADCSR.ADHSC bit = 1
ADSSTRn.SST[7:0] bits = 14h
Offset error
— ±0.5 ±6.0 LSB
Full-scale error
— ±1.25 ±6.0 LSB
Quantization error
— ±0.5 — LSB
Absolute accuracy
— ±3.0 ±8.0 LSB
DNL differential nonlinearity error
— ±1.0 — LSB
INL integral nonlinearity error
— ±1.5 ±3.0 LSB
Table 5.38 A/D Conversion Characteristics (3)
Conditions: VCC = AVCC0 = VREFH0 = 1.8 to 2.4 V, VSS = AVSS0 = VREFL0 = VSS_USB = 0 V, PCLKD = 1 to 8 MHz,
T
a
= –40 to +105°C
Item Min. Typ. Max. Unit Test Conditions
Resolution
——12Bit
Conversion time*
1
(Operation at
PCLKD = 8 MHz)
Permissible signal source
impedance (Max.) = 5.0 kΩ
4.875
(1.250)*
2
——µs
High-precision channel
ADCSR.ADHSC bit = 0
ADSSTRn.SST[7:0] bits = 09h
6.250
(2.625)*
2
——
Normal-precision channel
ADCSR.ADHSC bit = 0
ADSSTRn.SST[7:0] bits = 14h
Offset error
— ±0.5 ±24.0 LSB
Full-scale error
— ±1.25 ±24.0 LSB
Quantization error
— ±0.5 — LSB
Absolute accuracy
— ±2.75 ±32.0 LSB
DNL differential nonlinearity error
— ±1.0 — LSB
INL integral nonlinearity error
— ±1.25 ±12.0 LSB