R8C/2A Group, R8C/2B Group
5. Electrical Characteristics
Rev.1.00
Feb 09, 2007
REJ03B0182-0100
Figure 5.1
Ports P0 to P6, P8 Timing Measurement Circuit
NOTES:
1.
VCC/AVCC = Vref = 2.2 to 5.5 V at Topr = -20 to 85
°C (N version) / -40 to 85°C (D version), unless otherwise specified.
2.
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.
NOTES:
1.
VCC/AVCC = Vref = 2.7 to 5.5 V at Topr = -20 to 85
°C (N version) / -40 to 85°C (D version), unless otherwise specified.
2.
This applies when one D/A converter is used and the value of the DAi register (i = 0 or 1) for the unused D/A converter is 00h.
The resistor ladder of the A/D converter is not included. Also, even if the VCUT bit in the ADCON1 register is set to 0 (VREF
not connected), IVref flows into the D/A converters.
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
φAD = 10 MHz, Vref = AVCC = 5.0 V
±3
LSB
8-bit mode
φAD = 10 MHz, Vref = AVCC = 5.0 V
±2
LSB
10-bit mode
φAD = 10 MHz, Vref = AVCC = 3.3 V
±5
LSB
8-bit mode
φAD = 10 MHz, Vref = AVCC = 3.3 V
±2
LSB
10-bit mode
φAD = 5 MHz, Vref = AVCC = 2.2 V
±5
LSB
8-bit mode
φAD = 5 MHz, Vref = AVCC = 2.2 V
±2
LSB
Rladder
Resistor ladder
Vref = AVCC
10
40
k
tconv
Conversion time
10-bit mode
φAD = 10 MHz, Vref = AVCC = 5.0 V
3.3
s
8-bit mode
φAD = 10 MHz, Vref = AVCC = 5.0 V
2.8
s
Vref
Reference voltage
2.2
AVCC
V
VIA
0
AVCC
V
A/D operating
clock frequency
Without sample and hold
Vref = AVCC = 2.7 to 5.5 V
0.25
10
MHz
With sample and hold
Vref = AVCC = 2.7 to 5.5 V
1
10
MHz
Without sample and hold
Vref = AVCC = 2.2 to 5.5 V
0.25
5MHz
With sample and hold
Vref = AVCC = 2.2 to 5.5 V
1
5MHz
Table 5.4
D/A Converter Characteristics(1) Symbol
Parameter
Conditions
Standard
Unit
Min.
Typ.
Max.
Resolution
8Bit
Absolute accuracy
1.0
%
tsu
Setup time
3
s
RO
Output resistor
4
10
20
k
IVref
Reference power input current
1.5
mA
P0
P1
P2
P3
P4
P5
P6
P8
30pF