M32C8B_09 Datasheet, PDF (56/69 Pages) Renesas Technology Corp – RENESAS MCU

M32C/8B Group
5. Electrical Characteristics
VCC1 = VCC2 = 3.3 V
Table 5.32
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
−
Resolution
INL
Integral nonlinearity error (8-bit)
Measurement Condition
Standard
Unit
Min. Typ. Max.
VREF = VCC1
10 Bits
VREF = VCC1 = VCC2 = 3.3 V
±2 LSB
DNL
Differential nonlinearity error (8-bit)
−
Offset error (8-bit)
−
Gain error (8-bit)
RLADDER Resistor ladder
tCONV
8-bit conversion time⁽¹⁾⁽²⁾
VREF = VCC1
±1 LSB
±2 LSB
±2 LSB
4
20 kΩ
4.9
μs
VREF
VIA
Reference voltage
Analog input voltage
3
VCC1 V
0
VREF V
NOTES:
1. The value when φAD frequency is at 10 MHz. Keep φAD frequency at 10 MHz or lower.
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 5.33 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
−
−
tsu
RO
IVREF
Resolution
Absolute accuracy
Setup time
Output resistance
Reference power supply
input current
Measurement Condition
(note 1)
Standard
Unit
Min. Typ. Max.
8 Bits
1.0 %
3 μs
4
10 20 kΩ
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).
REJ03B0242-0100 Rev.1.00 Nov 01, 2009
Page 56 of 67