
Electrical Specifications
Technical Data
MC68HC08AZ32A — Rev 1.0
428
Electrical Specifications
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MOTOROLA
24.7 ADC Characteristics
Characteristic
Min
Max
Unit
Comments
Resolution
8
8
Bits
Absolute Accuracy
(V
REFL
= 0 V, V
DDA
= V
REFH
= 5 V
±
0.5v)
–1
+1
LSB
Includes
Quantization
Conversion Range (see Note 1)
V
REFL
V
REFH
V
V
REFL
= V
SSA
Power-Up Time
16
17
μ
s
Conversion Time
Period
Input Leakage (see Note 3)
Ports B and D
– 1
1
μ
A
Input Leakage (see Note 4)
Ports B and D
– 10
10
μ
A
Conversion Time
16
17
ADC
Clock
Cycles
Includes Sampling
Time
Monotonicity
Inherent within Total Error
Zero Input Reading
00
01
Hex
V
IN
= V
REFL
Full-Scale Reading
FE
FF
Hex
V
IN
= V
REFH
Sample Time (see Note 2)
5
—
ADC
Clock
Cycles
Input Capacitance
—
8
pF
Not Tested
ADC Internal Clock
500 k
1.048 M
Hz
Tested Only at 1 MHz
Analog Input Voltage
V
REFL
V
REFH
V
1.V
DD
= 5.0 Vdc
±
0.5v, V
SS
= 0 Vdc, V
DDA
/V
DDAREF
= 5.0 Vdc
±
0.5v, V
SSA
= 0 Vdc, V
REFH
= 5.0 Vdc
±
0.5v
2.Source impedances greater than 10 k
adversely affect internal RC charging time during input sampling.
3.The external system error caused by input leakage current is approximately equal to the product of R
source and input current.
4.When subjected to a Human Body Model (HBM) ESD event as specified in AEC Q100-002 these pins may exhibit
recoverable leakage values within the specification indicated.
F
Freescale Semiconductor, Inc.
n
.