MB91470/480 Series
81
(2) 12-bit A/D Converter
(VCC
= 4.0 V to 5.5 V, AVRHn = 4.0 V to 5.5 V, VSS = AVSS12 = 0 V, TA = 40 °C to + 85 °C)
* : The current when the CPU is in stop mode and the A/D converter is not operating (at VCC
= AVCC10 =
AVRHn
= 5.0 V) .
Notes :
The above figures do not guarantee the accuracy between each unit.
Output impedance of the external circuit ≤ 2 k
AVRHn = AVRH3, AVRH4
Parameter
Symbol
Pin Name
Value
Unit
Remarks
Min
Typ
Max
Resolution
12
bit
Linearity error
3.6
+ 3.6
LSB
When AVRHn
=
5.0 V
Differential
linearity error
3
+ 3LSB
Zero transition
voltage
VOT
AN3-0 to AN3-3
AN4-0 to AN4-3
Typ
20 mV
AVSS12
+
0.5 LSB
Typ
+
20 mV
Full-scale
transition voltage
VFST
AN3-0 to AN3-3
AN4-0 to AN4-3
Typ
20 mV
AVRHn
1.5 LSB
Typ
+
20 mV
Conversion time
2.0
s
When peripheral
clock
= 33 MHz
2.2
s
When peripheral
clock
= 40 MHz
Analog port
input current
IAIN
AN3-0 to AN3-3
AN4-0 to AN4-3
10
A
Analog input
voltage
VAIN
AN3-0 to AN3-3
AN4-0 to AN4-3
AVSS12
AVRHn
V
Reference
voltage
AVRHn
AVSS12
AVCC12
V
Analog supply
current
(analog
+ digital)
IA
AVCC12
2
mA
For each unit
IAH*AVCC12
5
A
Reference
voltage supply
current
(between AVRH
and AVSS)
IR
AVRHn
1
mA
For each unit,
at AVRHn
= 5.0 V,
AVSS12
= 0 V
IRH*
AVRHn
5
A
For each unit,
at stop mode
Analog input
capacitance
18
pF
Interchannel
disparity
AN3-0 to AN3-3
AN4-0 to AN4-3
4LSB