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| MC68HC908JK1 Datasheet, PDF (201/210 Pages) Motorola, Inc – MC68HC908JK1 | |||
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Electrical Specifications
ADC Characteristics
18.13 ADC Characteristics
Table 18-10. ADC Characteristics
Characteristic
Symbol
Min
Max
Unit
Comments
Supply voltage
VDDAD
2.7
(VDD min)
5.5
(VDD max)
V
Input voltages
VADIN
VSS
VDD
V
Resolution
BAD
8
8
Bits
Absolute accuracy
AAD
± 0.5
± 1.5
LSB
Includes quantization
ADC internal clock
fADIC
0.5
1.048
MHz
tAIC = 1/fADIC, tested
only at 1 MHz
Conversion range
RAD
VSS
VDD
V
Power-up time
tADPU
16
tAIC cycles
Conversion time
Sample time(1)
Zero input reading(2)
Full-scale reading(3)
tADC
16
tADS
5
ZADI
00
FADI
FE
17
tAIC cycles
â
tAIC cycles
01
Hex
VIN = VSS
FF
Hex
VIN = VDD
Input capacitance
Input leakage(3)
Port B/port D
CADI
â
â
â
(20) 8
pF
±1
µA
Not tested
NOTES:
1. Source impedances greater than 10 k⦠adversely affect internal RC charging time during input sampling.
2. Zero-input/full-scale reading requires sufficient decoupling measures for accurate conversions.
3. The external system error caused by input leakage current is approximately equal to the product of R source and input
current.
MC68H(R)C908JL3 â Rev. 1.0
MOTOROLA
Electrical Specifications
Technical Data
201
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