Datasheet

R01DS0011EJ0101 Rev.1.01 Page 79 of 102
Oct 28, 2011
R8C/LA3A Group, R8C/LA5A Group, R8C/LA6A Group, R8C/LA8A Group 5. Electrical Characteristics
5.2.3 Peripheral Function Characteristics
Notes:
1. The A/D conversion result will be undefined in wait mode, stop mode, power-off mode, when the flash memory stops, and in
low-current-consumption mode. Do not perform A/D conversion in these states or transition to these states during A/D
conversion.
2. This applies when the peripheral functions are stopped.
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 5.32 A/D Converter Characteristics
(V CC /AV CC = Vref = 1.8 to 5.5 V, V SS = 0 V, and T opr = − 20 to 85 ° C (N version) / −40 to
85°C (D version)
, unless otherwise specified.)
Symbol Parameter Conditions
Standard
Unit
Min. Typ. Max.
– Resolution V
ref = AVCC ––10Bit
–
Absolute accuracy
(2)
10-bit mode Vref = AVCC = 5.0 V AN0 to AN11 input – – ±3 LSB
V
ref = AVCC = 2.2 V AN0 to AN11 input – – ±5 LSB
V
ref = AVCC = 1.8 V AN0 to AN11 input – – ±5 LSB
8-bit mode V
ref = AVCC = 5.0 V AN0 to AN11 input – – ±2 LSB
V
ref = AVCC = 2.2 V AN0 to AN11 input – – ±2 LSB
V
ref = AVCC = 1.8 V AN0 to AN11 input – – ±2 LSB
φAD A/D conversion clock
4.0
≤ Vref = AVCC ≤ 5.5 V
(1)
1–20MHz
3.2
≤ Vref = AVCC ≤ 5.5 V
(1)
1–16MHz
2.7
≤ Vref = AVCC ≤ 5.5 V
(1)
1–10MHz
1.8
≤ Vref = AVCC ≤ 5.5 V
(1)
1–8MHz
– Tolerance level impedance – 3 – k
Ω
tCONV Conversion time 10-bit mode Vref = AVCC = 5.0 V, φAD = 20 MHz 2.2 – – µs
8-bit mode V
ref = AVCC = 5.0 V, φAD = 20 MHz 2.2 – – ms
t
SAMP Sampling time φAD = 20 MHz 0.8 – – µs
I
Vref Vref current Vcc = 5 V, XIN = f1 = φAD = 20 MHz - 45 – µA
V
ref Reference voltage 1.8 – AVCC V
V
IA
Analog input voltage
(3)
0–Vref V
OCVREF On-chip reference voltage 2 MHz
≤ φAD ≤ 4 MHz 1.53 1.70 1.87 V
Table 5.33 Temperature Sensor Characteristics
(VSS = 0 V and Topr = −20 to 85
° C (N version)/−40 to 85 ° C (D version), unless
otherwise specified.)
Symbol Parameter Conditions
Standard
Unit
Min. Typ. Max.
V
TMP Temperature sensor output voltage 1.8 V ≤ Vref = AVCC ≤ 5.5 V
φAD = 1.0 MHz to 5.0 MHz
Ambient temperature = 25
°C
550 600 650 mV
– Temperature coefficient 1.8 V
≤ Vref = AVCC ≤ 5.5 V
φAD = 1.0 MHz to 5.0 MHz
Ambient temperature = 25
°C
–
−2.1 – mV/°C
– Start-up time 1.8 V
≤ Vref = AVCC ≤ 5.5 V
φAD = 1.0 MHz to 5.0 MHz
– – 200
µs
I
TMP Operating current 1.8 V ≤ Vref = AVCC ≤ 5.5 V
φAD = 1.0 MHz to 5.0 MHz
– 100 –
µA