DS07-16303-3E Datasheet, PDF (90/97 Pages) Fujitsu Component Limited. – 32-bit RISC Microcontroller CMOS FR30 Series

MB91121
5. A/D Converter Block Electrical Characteristics
(VCC = AVCC = AVRH = 3.3 V, AVSS = 0.0 V, TA = 0 °C to + 70 °C)
Parameter
Symbol Pin name
Min.
Value
Typ.
Unit
Max.
Resolution
Total error
Linearity error
Differentiation linearity error
Zero transition voltage
Full-scale transition voltage
Conversion time
Analog port input current
Analog input voltage
Reference voltage
Power supply current
Reference voltage supply current
Conversion variance between channels



10
10
BIT




±5.0 LSB




±3.5 LSB




±2.0 LSB
VOT AN0 to AN7
−1.5
+0.5
+2.5 LSB
VFST AN0 to AN7 AVRH − 4.5 AVRH − 1.5 AVRH + 0.5 LSB


5.6*¹


µs
IAIN AN0 to AN7

0.1
10
µA
VAIN AN0 to AN7
AVSS

AVRH
V

AVRH
AVSS

AVCC
V
IA

4

mA
AVCC
IAH


5*²
µA
IR

200

µA
AVRH
IRH


5*²
µA
 AN0 to AN7


5
LSB
*1 : Machine clock = 25 MHz
*2 : Current value for A/D converters not in operation, CPU stop mode (VCC = AVCC = AVRH = 3.3 V)
Note : • As the absolute value of AVRH decreases, relative error increases.
• Output impedance of external circuit of analog input under following conditions;
Output impedance of external circuit < 5 kΩ
If output impedance of external circuit is too high, analog voltage sampling time may be too short for
accurate sampling.
Analog input circuit example
Analog input
Sample-and-hold circuit
C0
RON1
RON2
RON3
RON4
C1
RON1 : 0. 2 kΩ
RON2 : 1. 4 kΩ
RON3 : 1. 4 kΩ
RON4 : 0. 2 kΩ
C0 : 16.6 pF
C1 : 4.0 pF
Note : These values are given for reference purposes.
Comparator
90