mb91101 Fujitsu Microelectronics, Inc., mb91101 Datasheet - Page 92

• Manufacturer Part Number: mb91101
• Description: 32-bit Risc Microcontroller Cmos
• Manufacturer: Fujitsu Microelectronics, Inc.

92
MB91101/MB91101A
5. A/D Converter Block Electrical Characteristics
*1: AV
*2 Current value for A/D converters not in operation, CPU stop mode (V
Notes:
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
• Analog input circuit
CC
= 2.7 V to 3.6 V
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 < 10 k .
If output impedance of external circuit is too high, analog voltage sampling time may be too short for
accurate sampling (sampling time is 5.6 s for a machine clock of 25 MHz).
Parameter
Analog input
Note: Listed values are for reference purposes only.
R
R
R
R
ON1
ON2
ON3
ON4
0.2 k
1.4 k
1.4 k
0.2 k
R
ON1
(AV
C
C
0
1
CC
16.6 pF
R
Symbol
4.0 pF
ON2
= 2.7 V to 3.6 V, AV
V
V
V
I
I
I
—
—
—
—
—
—
—
AIN
I
I
AH
RH
FST
AIN
OT
R
A
R
ON3
AN0 to AN3
AN0 to AN3 AVRH – 4.5 AVRH – 1.5 AVRH + 0.5 LSB
AN0 to AN3
AN0 to AN3
AN0 to AN3
Pin name
AVRH
AVRH
AVRH
AV
AV
R
—
—
—
—
—
Sample and hold circuit
ON4
CC
CC
SS
= 0.0 V, AVRH = 2.7 V, T
C
1
5.6 *
AV
AV
–1.5
Min
CC
—
—
—
—
—
—
—
—
—
—
C
SS
SS
0
= AV
1
CC
Comparator
= AVRH = 3.6 V)
Value
+0.5
Typ
200
0.1
10
—
—
—
—
—
—
—
—
—
4
A
= –40 C to +70 C)
AVRH
AV
Max
+2.5
5 *
5 *
10
10
—
—
—
4.0
3.5
2.0
4
CC
2
2
Unit
LSB
LSB
LSB
LSB
LSB
mA
bit
V
V
A
A
A
A
s