MC908AP32CFBE Datasheet, PDF (308/324 Pages) Freescale Semiconductor, Inc – The following revision history table summarizes changes contained in this document. For your convenience, the page number designators have been linked to the appropriate location.

Electrical Specifications
22.12 3V ADC Electrical Characteristics
Table 22-11. ADC Electrical Characteristics (3V)
Characteristic⁽¹⁾
Symbol
Min
Max
Unit
Supply voltage
V_DDA
2.7
3.3
V
Input range
Resolution
V_ADIN
0
B_AD
10
V_DDA
V
10
bits
Absolute accuracy
A_AD
—
± 1.5
LSB
ADC internal clock
f_ADIC
500 k
1.048 M
Hz
Conversion range
R_AD
V_REFL
V_REFH
V
ADC voltage reference
high
V_REFH
—
V_DDA + 0.1
V
ADC voltage reference
low
V_REFL
V_SSA – 0.1
—
V
Conversion time
t_ADC
16
17
t_ADIC
cycles
Sample time
t_ADS
5
—
t_ADIC
cycles
Monotonicity
M_AD
Guaranteed
Zero input reading
Z_ADI
000
001
HEX
Full-scale reading
F_ADI
3FD
3FF
HEX
Input capacitance
C_ADI
—
20
pF
Input impedance
R_ADI
20 M
—
Ω
V_REFH/V_REFL
I_VREF
—
1.6
mA
1. V_DD = 2.7 to 3.3 Vdc, V_SS = 0 Vdc, T_A = T_L to T_H, unless otherwise noted.
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 step.
t_ADIC = 1/f_ADIC
V_ADIN = V_REFL
V_ADIN = V_REFH
Not tested.
Not tested.
MC68HC908AP Family Data Sheet, Rev. 4
306
Freescale Semiconductor