LC877816A_08 Datasheet, PDF (15/21 Pages) Sanyo Semicon Device – 8-bit 1-chip Microcontroller

LC877816A/12A/08A
AD Converter Characteristics at Ta = -30°C to +70°C, VSS1 = VSS2 = 0V
Parameter
Resolution
Absolute
accuracy
Conversion
Symbol
N
ET
tCAD
Pin/Remarks
AN0(P00) to
AN4(P04),
AN5(P70) to
AN8(P73)
Conditions
(Note 6-1)
AD conversion time=32×tCYC
VDD[V]
2.4 to 3.6
2.4 to 3.6
min
22.4
Specification
typ
max
unit
8
bit
±1.5 LSB
640
time
(ADCR2=0) (Note 6-2)
3.0 to 3.6 (tCYC=
(tCYC=
Normal mode
0.70μs)
20μs)
128
640
2.4 to 3.6 (tCYC=
(tCYC=
4.00μs)
20μs)
AD conversion time=32×tCYC
128
640
(ADCR2=0) (Note6-2)
Power save mode
AD conversion time=64×tCYC
2.4 to 3.6
(tCYC=
4.00μs)
44.8
(tCYC=
20μs)
μs
1280
(When ADCR2=1) (Note 6-2)
Normal mode
3.0 to 3.6
(tCYC=
0.70μs)
(tCYC=
20μs)
256
1280
2.4 to 3.6 (tCYC=
(tCYC=
4.00μs)
20μs)
AD conversion time=32×tCYC
256
1280
(ADCR2=0) (Note6-2)
2.4 to 3.6 (tCYC=
(tCYC=
Power save mode
4.00μs)
20μs)
Analog input
voltage range
VAIN
2.4 to 3.6
VSS
VDD
V
Analog port
IAINH
VAIN=VDD
2.4 to 3.6
input current
IAINL
VAIN=VSS
2.4 to 3.6
-1
Note 6-1: The quantization error (±1/2LSB) is excluded from the absolute accuracy value.
1
μA
Note 6-2: The conversion time refers to the interval from the time the instruction for starting the converter is issued till
the time the complete digital value corresponding to the analog input value is loaded in the required register.
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