MC9S08FL16 Datasheet, PDF (24/34 Pages) Freescale Semiconductor, Inc – 8-Bit S08 Central Processor Unit (CPU)

Electrical Characteristics
5.10 ADC Characteristics
Table 12. 8-Bit ADC Operating Conditions
Characteristic
Conditions
Symb
Min Typical¹ Max
Unit
Comment
Absolute
V_DDA
4.5
—
Supply voltage
Delta to V_DD (V_DD – V_DDA)²
ΔV_DDA
–100
0
Ground voltage Delta to V_SS (V_SS – V_SSA)²
ΔV_SSA
–100
0
5.5
V
100
mV
100
mV
Input voltage —
V_ADIN
V_REFL
—
V_REFH
V
Input
capacitance
—
C_ADIN
—
4.5
5.5
pF
Input resistance —
R_ADIN
—
3
5
kΩ
Analog source
resistance
8-bit mode (all valid f_ADCK)
R_AS
—
—
10
kΩ
External to MCU
ADC conversion ^{High speed (ADLPC = 0)}
clock frequency _{Low power (ADLPC = 1)}
0.4
—
8.0
f_ADCK
MHz
0.4
—
4.0
1 _{Typical values assume VDDA = 5.0 V, Temp = 25 °C, fADCK= 1.0 MHz unless otherwise stated. Typical values are for reference}
only and are not tested in production.
2 _{DC potential difference.}
R_AS
V_AS
+
–
Z_AS
C_AS
SIMPLIFIED
INPUT PIN EQUIVALENT
CIRCUIT
+
V_ADIN
–
Pad
leakage
due to
input
protection
Z_ADIN
SIMPLIFIED
CHANNEL SELECT
CIRCUIT
R_ADIN
ADC SAR
ENGINE
INPUT PIN
INPUT PIN
INPUT PIN
R_ADIN
R_ADIN
R_ADIN
Figure 16. ADC Input Impedance Equivalency Diagram
C_ADIN
MC9S08FL16 Series Data Sheet, Rev. 2
24
Freescale Semiconductor