M32C8A Datasheet, PDF (337/372 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M32C/80 Series

M32C/8A Group
23. Electrical Characteristics
VCC1 = VCC2 = 3.3 V
Table 23.31 A/D Conversion Characteristics
(VCC1 = VCC2 = AVCC = VREF = 3.0 to 3.6 V, VSS = AVSS = 0 V, Topr = -20 to 85°C,
f(CPU) = 24MHz unless otherwise specified)
Symbol
Parameter
Measurement Condition
Standard
Unit
Min. Typ. Max.
−
Resolution
VREF = VCC1
10 Bits
INL
Integral nonlinearity error (8-bit)
VREF = VCC1 = VCC2 = 3.3 V
±2 LSB
DNL
Differential nonlinearity error (8-bit)
±1 LSB
−
Offset error (8-bit)
±2 LSB
−
Gain error (8-bit)
±2 LSB
RLADDER Resistor ladder
VREF = VCC1
8
40 kΩ
tCONV
8-bit conversion time⁽¹⁾⁽²⁾
4.9
μs
VREF
Reference voltage
3
VCC1 V
VIA
Analog input voltage
0
VREF V
NOTES:
1. The value when φAD frequency is at 10 MHz. Keep φAD frequency at 10 MHz or less.
If f(CPU) (=fAD) is 24 MHz, divide f(CPU) by 3 to make it 8 MHz. The conversion time in this case is 6.1 μs.
2. S&H not available.
Table 23.32 D/A Conversion Characteristics
(VCC1 = VCC2 = VREF = 3.0 to 3.6 V, VSS = AVSS = 0 V at Topr = -20 to 85°C,
f(CPU) = 24MHz unless otherwise specified)
Symbol
Parameter
Measurement Condition
Standard
Unit
Min. Typ. Max.
−
Resolution
8 Bits
−
Absolute accuracy
1.0 %
tsu
Setup time
3 μs
RO
Output resistance
4
10 20 kΩ
IVREF
Reference power supply
input current
(note 1)
1.0 mA
NOTE:
1. Measurement when one D/A converter is used, and the DAi register (i = 0, 1) of the unused D/A converter is set
to 00h. The current flown into the resistor ladder in the A/D converter is excluded. IVREF flows even if VCUT
bit in the AD0CON1 register is set to 0 (VREF not connected)
Rev.1.00 Jul 15, 2007 Page 320 of 352
REJ09B0385-0100