
R01DS0033EJ0200 Rev.2.00
Page 55 of 115
Feb 07, 2011
M16C/63 Group
5. Electrical Characteristics
Figure 5.3
A/D Accuracy Measure Circuit
Notes:
1.
Use when AVCC = VCC1 = VCC2.
2.
Do not use A/D converter when VCC1 > VCC2.
3.
When analog input voltage is over reference voltage, the result of A/D conversion is 3FFh.
4.
Flash memory rewrite disabled. Except for the analog input pin, set the pins to be measured as input ports and
connect them to VSS. See Figure 5.3 “A/D Accuracy Measure Circuit”.
5.1.4
D/A Conversion Characteristics
Notes:
1.
This applies when using one D/A converter, with the D/A register for the unused D/A converter set to 00h.
2.
The current consumption of the A/D converter is not included. Also, the IVREF of the D/A converter will flow even
if the ADSTBY bit in the ADCON1 register is 0 (A/D operation stopped (standby)).
Table 5.7
A/D Conversion Characteristics (2/2) (1) AVCC = VCC1 = VCC2 = VREF = 1.8 to 5.5 V, VSS = AVSS = 0 V at Topr = -20°C to 85°C/-40°C to 85°C unless otherwise
specified.
Symbol
Parameter
Measuring Condition
Standard
Unit
Min.
Typ.
Max.
φAD
A/D operating clock frequency
≤ V
REF ≤ AVCC ≤ 5.5 V
2
20
MHz
3.2 V
≤ V
REF ≤ AVCC ≤ 5.5 V
2
16
MHz
3.0 V
≤ V
REF ≤ AVCC ≤ 5.5 V
2
10
MHz
1.8 V
≤ V
REF ≤ AVCC ≤ 5.5 V
2
5
MHz
-
Tolerance level impedance
3
k
Ω
DNL
Differential non-linearity error
±1
LSB
-
Offset error
±3
LSB
-
Gain error
±3
LSB
tCONV
10-bit conversion time
VCC1 = 5 V, φAD = 20 MHz
2.15
μs
tSAMP
Sampling time
0.75
μs
VREF
Reference voltage
1.8
AVCC
V
VIA
Analog input voltage (2), (3)
0VREF
V
Table 5.8
D/A Conversion Characteristics
VCC1 = AVCC = VREF = 3.0 to 5.5 V, VSS = AVSS = 0 V at Topr = -20°C to 85°C/-40°C to 85°C unless otherwise specified.
Symbol
Parameter
Measuring Condition
Standard
Unit
Min.
Typ.
Max.
-
Resolution
8Bits
-
Absolute Accuracy
2.5
LSB
tSU
Setup Time
3
μs
RO
Output Resistance
56
8.2
k
Ω
IVREF
Reference Power Supply Input Current
1.5
mA
AN
Analog input
AN: One of the analog input pin
P0 to P10: I/O pins other than AN
P0 to P10