M68HC16 Z SERIES
ELECTRICAL CHARACTERISTICS
USER’S MANUAL
A-63
Table A-33 Low Voltage ADC DC Electrical Characteristics (Operating)
(V
SS
= 0 Vdc, ADCLK = 1.05 MHz, T
A
within operating temperature range)
Num
Parameter
Symbol
Min
Max
Unit
1
Analog Supply
1
NOTES:
1. Refers to operation over full temperature and frequency range.
V
DDA
2.7
3.6
V
2
Internal Digital Supply
1
V
DDI
2.7
3.6
V
3
V
SS
Differential Voltage
V
SSI
–
V
SSA
– 1.0
1.0
mV
4
V
DD
Differential Voltage
V
DDI
–
V
DDA
– 0.6
0.6
V
5
Reference Voltage Low
2, 3
2. To obtain full-scale, full-range results, V
SSA
≤
V
RL
≤
V
INDC
≤
V
RH
≤
V
DDA.
3. Accuracy tested and guaranteed at V
RH
– V
RL
= 2.7 V
±
3.6 Vdc.
V
RL
V
SSA
V
DDA
/ 2
V
6
Reference Voltage High
2, 3
V
RH
V
DDA
/ 2
V
DDA
V
7
V
REF
Differential Voltage
3
V
RH
–
V
RL
2.7
3.6
V
8
Input Voltage
2
V
INDC
V
SSA
V
DDA
V
9
Input High, Port ADA
V
IH
0.7 (V
DDA
)
V
DDA
+ 0.3
V
10
Input Low, Port ADA
V
IL
V
SSA
–
0.3
0.2 (V
DDA
)
V
11
Analog Supply Current
Normal Operation
4
Low-Power Stop
4. Current measured at maximum system clock frequency with ADC active.
I
DDA
—
—
1.0
200
mA
µ
A
12
Reference Supply Current
I
REF
—
120
µ
A
13
Input Current, Off Channel
5
5. Maximum leakage occurs at maximum operating temperature. Current decreases by approximately one-half
for each 10
°
C decrease from maximum temperature.
I
OFF
—
150
nA
14
Total Input Capacitance, Not Sampling
C
INN
—
10
pF
15
Total Input Capacitance, Sampling
C
INS
—
15
pF
Table A-34 Low Voltage ADC AC Characteristics (Operating)
(V
DD
and V
DDA
= 2.7 to 3.6 Vdc, V
SS
= 0 Vdc, T
A
within operating temperature range)
Num
Parameter
Symbol
Min
Max
Unit
1
ADC Clock Frequency
f
ADCLK
0.5
1.05
MHz
2
8-Bit Conversion Time
1
f
ADCLK
=
1.05 MHz
NOTES:
1. Conversion accuracy varies with f
ADCLK
rate. Reduced conversion accuracy occurs at maximum.
t
CONV
15.2
—
µ
s
3
10-Bit Conversion Time
1
f
ADCLK
=
1.05 MHz
t
CONV
17.1
—
µ
s
4
Stop Recovery Time
t
SR
—
50
µ
s
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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