Datasheet

Appendix A Electrical Characteristics and Timing Specifications
MC9S08AC16 Series Data Sheet, Rev. 9
Freescale Semiconductor 305
Figure A-8. ADC Input Impedance Equivalency Diagram
Table A-9. 5 Volt 10-bit ADC Characteristics (V
REFH
= V
DDAD
, V
REFL
= V
SSAD
)
Characteristic Conditions C Symb Min Typ
1
Max Unit
Supply current
ADLPC = 1
ADLSMP = 1
ADCO = 1
TI
DDAD
— 133 — A
Supply current
ADLPC = 1
ADLSMP = 0
ADCO = 1
TI
DDAD
— 218 — A
Supply current
ADLPC = 0
ADLSMP = 1
ADCO = 1
TI
DDAD
— 327 — A
Supply current
ADLPC = 0
ADLSMP = 0
ADCO = 1
TI
DDAD
— 582 — A
V
DDAD
< 5.5 V P — — 1 mA
ADC asynchronous clock source
t
ADACK
= 1/f
ADACK
High speed (ADLPC = 0)
P
f
ADACK
23.35MHz
Low power (ADLPC = 1) 1.25 2 3.3
Conversion time
(Including sample time)
Short sample (ADLSMP = 0) P t
ADC
—20—ADCK
cycles
Long sample (ADLSMP = 1) — 40 —
+
–
+
–
V
AS
R
AS
C
AS
V
ADIN
Z
AS
Pad
leakage
due to
input
protection
Z
ADIN
SIMPLIFIED
INPUT PIN EQUIVALENT
CIRCUIT
R
ADIN
ADC SAR
ENGINE
SIMPLIFIED
CHANNEL SELECT
CIRCUIT
INPUT PIN
R
ADIN
C
ADIN
INPUT PIN
R
ADIN
INPUT PIN
R
ADIN