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| MC68HC08AS32 Datasheet, PDF (376/394 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs) | |||
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Electrical Speciï¬cations
21.7 ADC Characteristics
Characteristic
Min
Max
Unit
Comments
Resolution
8
8
Bits
Absolute Accuracy
(VREFL = 0 V, VDDA = VREFH = 5 V ± 10%)
Conversion Range(1) (see Note 1)
Power-Up Time
Input Leakage(2) (see Note 3)
Ports B and D
â1
VREFL
16
â
+1
VREFH
17
±1
LSB
V
µs
µA
Includes
Quantization
VREFL = VSSA
Conversion Time
Period
Conversion Time
16
17
ADC
Clock
Cycles
Includes Sampling
Time
Monotonicity
Inherent within Total Error
Zero Input Reading
Full-Scale Reading
Sample Time(3) (see Note 2)
00
01
Hex
VIN = VREFL
FE
FF
Hex
VIN = VREFH
ADC
5
â
Clock
Cycles
Input Capacitance
â
8
pF
Not Tested
ADC Internal Clock
500 k 1.048 M
Hz
Tested Only at 1 MHz
Analog Input Voltage
â0.3
VDD + 0.3
V
1. VDD = 5.0 Vdc ± 10%, VSS = 0 Vdc, VDDA/VDDAREF = 5.0 Vdc ± 10%, VSSA = 0 Vdc, VREFH = 5.0 Vdc ± 10%
2. The external system error caused by input leakage current is approximately equal to the product of R source and input
current.
3. Source impedances greater than 10 k⦠adversely affect internal RC charging time during input sampling.
Advance Information
376
Electrical Specifications
MC68HC08AS32 â Rev. 3.0
MOTOROLA
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