mcf51ac256 Freescale Semiconductor, Inc, mcf51ac256 Datasheet - Page 24

• Manufacturer Part Number: mcf51ac256
• Description: Mcf51ac256 Coldfire Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Preliminary Electrical Characteristics
24
Supply
CurrentADLPC
=1ADLSMP=1
ADCO=1
Supply
CurrentADLPC
=1ADLSMP=0
ADCO=1
Supply
CurrentADLPC
=0ADLSMP=1
ADCO=1
Supply
CurrentADLPC
=0ADLSMP=0
ADCO=1
Supply Current
Characteristic
1
2
Typical values assume V
reference only and are not tested in production.
DC potential difference.
V
AS
+
–
Table 14. 5 Volt 12-bit ADC Characteristics (V
Stop, Reset, Module Off
R
AS
Conditions
DDAD
Figure 8. ADC Input Impedance Equivalency Diagram
MCF51AC256 ColdFire Microcontroller Data Sheet, Rev.1
C
AS
= 5.0 V, Temp = 25°C, f
Z
Preliminary—Subject to Change Without Notice
AS
V
+
–
ADIN
C
T
T
T
P
INPUT PIN EQUIVALENT
Pad
leakage
due to
input
protection
INPUT PIN
INPUT PIN
INPUT PIN
Symb
SIMPLIFIED
I
I
I
I
I
ADCK
DDAD
DDAD
DDAD
DDAD
DDAD
CIRCUIT
=1.0 MHz unless otherwise stated. Typical values are for
Min
—
—
—
—
—
REFH
Typical
= V
0.582
0.011
Z
133
218
327
ADIN
DDAD
1
CHANNEL SELECT
R
R
R
R
ADIN
ADIN
ADIN
ADIN
, V
SIMPLIFIED
CIRCUIT
REFL
Max
—
—
—
1
1
= V
SSAD
Freescale Semiconductor
Unit
mA
μA
μA
μA
μA
C
)
ADIN
ADC SAR
ENGINE
Comment