LC88FC3K0A Datasheet, PDF (37/48 Pages) ON Semiconductor – 16-bit Microcontroller

LC88FC3K0A
■ AD Converter Characteristics at Ta=–40 to +85C, VSS1=VSS2=VSS3=VSS4=0V
12-bit AD Conversion Mode
Parameter
Symbol
Applicable Pin
/Remarks
Conditions
Specification
VDD [V]
min
typ
max
unit
Resolution
NAD
AN0 (P60)
to AN7 (P67),
2.7 to 3.6
12
bit
Absolute accuracy ETAD _{AN8 (P70)}
(Note 6-1)
2.7 to 3.6
16
LSB
Conversion time
TCAD12 ^{to AN15 (P77)} Conversion time calculated
3.0 to 3.6
64
2.7 to 3.6
128
115
230
s
Analog input
voltage range
VAIN
2.7 to 3.6
VSS
VDD
V
Analog port
input current
IAINH
IAINL
VAIN=VDD
VAIN=VSS
2.7 to 3.6
2.7 to 3.6
1
1
A

Conversion
time
calculation
formula
:
TCAD12
=
(
AD
52
division
ratio
+2)

tCYC
8-bit AD Conversion Mode
Parameter
Symbol
Applicable Pin
/Remarks
Conditions
VDD [V]
min
Resolution
Absolute accuracy
NAD
ETAD
AN0 (P60)
to AN7 (P67),
AN8 (P70)
(Note 6-1)
2.7 to 3.6
2.7 to 3.6
Conversion time
TCAD8 ^{to AN15 (P77)} Conversion time calculated
3.0 to 3.6
39
2.7 to 3.6
79
Analog input
voltage range
VAIN
2.7 to 3.6
VSS
Analog port
input current
IAINH
IAINL
VAIN=VDD
VAIN=VSS
2.7 to 3.6
2.7 to 3.6
1

Conversion
time
calculation
formula
:
TCAD8
=
(
AD
52
division
ratio
+2)

tCYC
Specification
typ
max
unit
8
bit
1.5
LSB
71
140
s
VDD
V
1
A
Note 6-1 : The quantization error (±1/2LSB) is excluded from the absolute accuracy.
Note 6-2 : The conversion time refers to the interval from the time a conversion starting instruction is issued
till the time the complete digital value against the analog input value is loaded in the result register.
The conversion time is twice the normal value when one of the following conditions occurs:
- The first AD conversion is executed in the 12-bit AD conversion mode after a system reset.
- The first AD conversion is executed after the AD conversion mode is switched from 8-bit to 12-bit AD
conversion mode.
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