MC68HC908LJ12_1 Datasheet, PDF (6/16 Pages) Freescale Semiconductor, Inc – Addendum to MC68HC908LJ12 Technical Data

HC908LJ12AD/D
Freescale Semiconductor, Inc.
ADC Electrical
Characteristics
Characteristic
Supply voltage
Input range
Resolution
Absolute accuracy
ADC internal clock
Conversion range
ADC voltage
reference high
ADC voltage
reference low
Conversion time
Sample time
Monotonically
Zero input reading
Full-scale reading
Input capacitance
Input impedance
V_REFH/V_REFL
70
60
– 40 °C
50
+ 25 °C
40
+ 85 °C
30
20
10
0
2
3
4
5
6
Supply Voltage, V_DD (V)
Figure 1. Typical Internal Oscillator Frequency
Table 6. ADC Electrical Characteristics (2.4 to 3.3V)
Symbol
V_DDA
V_ADIN
B_AD
A_AD
f_ADIC
R_AD
Min
Max
2.4
3.3
0
V_DDA
10
10
See Figure 2 and Figure 3.
32 k
V_REFL
2M
V_REFH
Unit
V
V
bits
Hz
V
Notes
V_ADIN ≤ V_DDA
1,024 counts
Includes quantization.
±1 ADC count = ±0.5 LSB
t_ADIC = 1/f_ADIC
V_REFH
—
V_DDA + 0.1
V
V_REFL
t_ADC
t_ADS
M_AD
Z_ADI
F_ADI
C_ADI
R_ADI
I_VREF
V_SSA – 0.1
—
16
17
5
000
3FC
—
20 M
—
—
Guaranteed
001
3FF
20
—
1.6
V
t_ADIC
cycles
t_ADIC
cycles
V_SSA is tied to V_SS internally.
HEX
HEX
pF
Ω
mA
V_ADIN = V_REFL
V_ADIN = V_REFH
Not tested.
Measured at 5V
Not tested.
Addendum to MC68HC908LJ12 Technical Data
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