M68HC16 Z SERIES
ELECTRICAL CHARACTERISTICS
MOTOROLA
USER’S MANUAL
A-63
Table A-33 Low Voltage ADC DC Electrical Characteristics (Operating)
(VSS = 0 Vdc, ADCLK = 1.05 MHz, T
A
within operating temperature range)
Num
Parameter
Symbol
Min
Max
Unit
1
Analog Supply1
NOTES:
1. Refers to operation over full temperature and frequency range.
VDDA
2.7
3.6
V
2
Internal Digital Supply1
VDDI
2.7
3.6
V
3VSS Differential Voltage
VSSI – VSSA
– 1.0
1.0
mV
4VDD Differential Voltage
VDDI – VDDA
– 0.6
0.6
V
5
Reference Voltage Low2, 3
2. To obtain full-scale, full-range results, VSSA ≤ VRL ≤ VINDC ≤ VRH ≤ VDDA.
3. Accuracy tested and guaranteed at VRH – VRL = 2.7 V ± 3.6 Vdc.
VRL
VSSA
VDDA / 2
V
6
Reference Voltage High2, 3
VRH
VDDA / 2
VDDA
V
7VREF Differential Voltage
3
VRH – VRL
2.7
3.6
V
8
Input Voltage2
VINDC
VSSA
VDDA
V
9
Input High, Port ADA
VIH
0.7 (VDDA)VDDA + 0.3
V
10
Input Low, Port ADA
VIL
VSSA – 0.3
0.2 (VDDA)V
11
Analog Supply Current
Normal Operation4
Low-Power Stop
4. Current measured at maximum system clock frequency with ADC active.
IDDA
—
1.0
200
mA
A
12
Reference Supply Current
IREF
—
120
A
13
Input Current, Off Channel5
5. Maximum leakage occurs at maximum operating temperature. Current decreases by approximately one-half
for each 10
°C decrease from maximum temperature.
IOFF
—
150
nA
14
Total Input Capacitance, Not Sampling
CINN
—10
pF
15
Total Input Capacitance, Sampling
CINS
—15
pF
Table A-34 Low Voltage ADC AC Characteristics (Operating)
(VDD and VDDA = 2.7 to 3.6 Vdc, VSS = 0 Vdc, TA within operating temperature range)
Num
Parameter
Symbol
Min
Max
Unit
1
ADC Clock Frequency
fADCLK
0.5
1.05
MHz
2
8-Bit Conversion Time1
fADCLK = 1.05 MHz
NOTES:
1. Conversion accuracy varies with fADCLK rate. Reduced conversion accuracy occurs at maximum.
tCONV
15.2
—
s
3
10-Bit Conversion Time1
fADCLK = 1.05 MHz
tCONV
17.1
—
s
4
Stop Recovery Time
tSR
—50
s