Datasheet

M32C/87 Group (M32C/87, M32C/87A, M32C/87B) 5. Electrical Characteristics
REJ03B0127-0151 Rev.1.51 Jul 31, 2008
Page 54 of 85
Table 5.8 A/D Conversion Characteristics
(VCC1 = VCC2 = AVCC = VREF = 4.2 to 5.5 V, VSS = AVSS = 0 V, Topr = -20 to 85°C, f(CPU) =
32MHz unless otherwise specified)
NOTES:
1. The value is obtained when φAD frequency is at 16 MHz. Keep φAD frequency at 16 MHz or lower.
2. With using the sample and hold function
Table 5.9 D/A Conversion Characteristics
(VCC1 = VCC2 = VREF = 4.2 to 5.5 V, VSS = AVSS = 0 V, Topr = -20 to 85°C,
f(CPU) = 32MHz unless otherwise specified)
NOTE:
1. Measured 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 the VCUT
bit in the AD0CON1 register is set to 0 (VREF not connected)
Symbol Parameter Measurement Condition
Standard
Unit
Min. Typ. Max.
− Resolution VREF = VCC1 10 Bits
INL Integral nonlinearity error VREF = VCC1
= VCC2 = 5 V
AN_0 to AN_7,
AN0_0 to AN0_7,
AN2_0 to AN2_7,
AN15_0 to AN15_7,
ANEX0, ANEX1
±3 LSB
External op-amp
connection mode
±7 LSB
DNL Differential nonlinearity
error
±1 LSB
− Offset error ±3 LSB
− Gain error ±3 LSB
RLADDER Resistor ladder VREF = VCC1 8 40 kΩ
tCONV 10-bit conversion time
(1)(2)
2.06 μs
tCONV 8-bit conversion time
(1)(2)
1.75 μs
tSAMP Sampling time
(1)
0.188 μs
VREF Reference voltage 2 VCC1 V
VIA Analog input voltage 0 VREF V
Symbol Parameter Measurement Condition
Standard
Unit
Min. Typ. Max.
− Resolution 8Bits
− Absolute accuracy 1.0 %
tsu Setup time 3 μs
RO Output resistance 4 10 20 kΩ
IVREF Reference power supply
input current
(note 1)
1.5 mA
VCC1 = VCC2 = 5V