MC68HC908LJ24 Datasheet, PDF (443/464 Pages) Motorola, Inc – Microcontrollers

24.12 5V ADC Electrical Characteristics
Electrical Specifications
5V 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
Table 24-10. 5V ADC Electrical Characteristics
Symbol
V_DDA
V_ADIN
B_AD
A_AD
f_ADIC
R_AD
Min
4.5
0
10
—
32 k
V_REFL
Max
5.5
V_DDA
10
± 1.5
2M
V_REFH
Unit
V
V
bits
LSB
Hz
V
Notes
V_DDA is an dedicated pin and
should be tied to V_DD on the
PCB with proper decoupling.
V_ADIN ≤ V_DDA
Includes quantization.
±0.5 LSB = ±1 ADC count.
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
V_SSA is tied to V_SS internally.
t_ADIC
cycles
t_ADIC
cycles
HEX
HEX
pF
Ω
mA
V_ADIN = V_REFL
V_ADIN = V_REFH
Not tested.
Not tested.
MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
Electrical Specifications
Data Sheet
443