MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 382

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MC68HC708AS48

Manufacturer Part Number
MC68HC708AS48
Description
Advance Information
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
Electrical Specifications
21.7 ADC Characteristics
Characteristic
Resolution
Absolute accuracy
(V
= 0 V, V
= V
= 5 V 10%)
REFL
DDA
REFH
(1)
Conversion range
Powerup time
(2)
Input leakage
Ports B and D
Conversion time
Monotonicity
Zero input reading
Full-scale reading
(3)
Sample time
Input capacitance
ADC internal clock
Analog input voltage
1. V
= 5.0 Vdc 10%, V
= 0 Vdc, V
DD
SS
2. The external system error caused by input leakage current is approximately equal to the product of R source and input
current.
3. Source impedances greater than 10 k adversely affect internal RC charging time during input sampling.
Advance Information
382
Min
Max
8
8
–1
+1
V
V
REFL
REFH
16
17
1
16
17
Inherent within Total Error
00
01
FE
FF
5
8
500 k
1.048 M
–0.3
V
+ 0.3
DD
/V
= 5.0 Vdc 10%, V
= 0 Vdc, V
DDA
DDAREF
SSA
Electrical Specifications
Unit
Comments
Bits
LSB
Includes quantization
V
V
= V
REFL
SSA
Conversion time
s
period
A
ADC
Includes sampling
clock
time
cycles
Hex
V
= V
IN
REFL
Hex
V
= V
IN
REFH
ADC
clock
cycles
pF
Not tested
Hz
Tested only at 1 MHz
V
= 5.0 Vdc 10%
REFH
MC68HC708AS48
Rev. 4.0
MOTOROLA

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