Datasheet

R8C/22 Group, R8C/23 Group 5. Electrical Characteristics
Rev.2.00 Aug 20, 2008 Page 29 of 48
REJ03B0097-0200
NOTES:
1. V
CC = AVCC = 2.7 to 5.5 V at Topr = -40 to 85°C (D, J version) / -40 to 125°C (K version), unless otherwise specified.
2. When analog input voltage exceeds reference voltage, A/D conversion result is 3FFh in 10-bit mode, FFh in 8-bit mode.
Figure 5.1 Ports P0 to P4, P6 Timing Measurement Circuit
Table 5.3 A/D Converter Characteristics
Symbol Parameter Conditions
Standard
Unit
Min. Typ. Max.
− Resolution V
ref = AVCC −− 10 Bits
− 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
R
ladder Resistor ladder Vref = AVCC 10 − 40 kΩ
t
conv Conversion time 10-bit mode φAD = 10 MHz, Vref = AVCC = 5.0 V 3.3 −−µs
8-bit mode φAD
= 10 MHz, Vref = AVCC = 5.0 V 2.8 −−µs
V
ref Reference voltage 2.7 − AVCC V
V
IA
Analog input voltage
(2)
0 − AVCC V
− A/D operating
clock frequency
Without sample & hold 0.25 − 10 MHz
With sample & hold 1 − 10 MHz
P0
P3
P2
P1
P6
P4
30pF