LC88FC2F0B Datasheet, PDF (35/47 Pages) ON Semiconductor – 16-bit Microcontroller 384K-byte Flash ROM / 24Kbyte RAM / 100-pin

LC88FC2F0B
■ AD Converter Characteristics at Ta=–40 to +85C, VSS1=VSS2=VSS3=VSS4=0V
1. 12-bit AD Conversion Mode
Parameter
Applicable Pin
Symbol /Remarks
Conditions
Specification
VDD[V]
min
typ
max
unit
Resolution
NAD AN0 (P60)
2.7 to 3.6
12
bit
Absolute accuracy ETAD
to AN7 (P67), _{(Note 6-1)}
AN8 (P70)
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
s
230
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
2. 8-bit AD Conversion Mode
Parameter
Applicable Pin
Symbol /Remarks
Conditions
Specification
VDD [V]
min
typ
max
unit
Resolution
NAD AN0 (P60)
2.7 to 3.6
Absolute accuracy ETAD
to AN7 (P67), _{(Note 6-1)}
AN8 (P70)
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
8
bit
1.5
LSB
71
s
140
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:
TCAD8=
(
AD
52
division
ratio
+2)

tCYC
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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