
R8C/14 Group, R8C/15 Group 19. Electrical Characteristics
Rev.2.10 Jan 19, 2006 Page 218 of 253
REJ09B0164-0210
NOTES:
1. V
CC = AVCC = 2.7 to 5.5V at Topr = -20 to 85 °C / -40 to 85 °C, unless otherwise specified.
2. If f1 exceeds 10MHz, divide the f1 and hold A/D operating clock frequency (
φAD) 10MHz or below.
3. If the AVcc is less than 4.2V, divide the f1 and hold A/D operating clock frequency (
φAD) f1/2 or below.
4. Hold V
CC = Vref
Figure 19.1 Port P1, P3 and P4 Measurement Circuit
Table 19.3 A/D Converter Characteristics
Symbol Parameter Conditions
Standard
Unit
Min. Typ. Max.
− Resolution Vref = VCC −−10 Bits
− Absolute
Accuracy
10-Bit Mode φAD = 10MHz, Vref = VCC = 5.0V −−±3 LSB
8-Bit Mode
φAD = 10MHz, Vref = VCC = 5.0V −−±2 LSB
10-Bit Mode
φAD = 10MHz, Vref = VCC = 3.3V
(3)
−−±5 LSB
8-Bit Mode
φAD = 10MHz, Vref = VCC = 3.3V
(3)
−−±2 LSB
R
ladder Resistor Ladder Vref = VCC 10 − 40 kΩ
tconv Conversion Time 10-Bit Mode
φAD = 10MHz, Vref = VCC = 5.0V
3.3
−−µs
8-Bit Mode
φAD = 10MHz, Vref = VCC = 5.0V
2.8
−−µs
V
ref Reference voltage −
VCC
(4)
− V
V
IA Analog Input Voltage 0 − Vref V
− A/D Operating
Clock
Frequency
(2)
Without Sample & Hold 0.25 − 10 MHz
With Sample & Hold 1
− 10 MHz
P1
P3
P4
30pF
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