mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 390

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Electrical Specifications
23.7 ADC Characteristics
Technical Data
388
Resolution
Absolute accuracy
Conversion range
Powerup time
Input leakage
Conversion time
Monotonicity
Zero input reading
Full-scale reading
Sample time
Input capacitance
ADC internal clock
Analog input voltage
1. V
2. The external system error caused by input leakage current is approximately equal to the product of R source and input
3. Source impedances greater than 10 kΩ adversely affect internal RC charging time during input sampling.
(V
Ports B and D
current.
REFL
DD
= 5.0 Vdc ± 10%, V
= 0 V, V
(3)
(2)
DDA
Characteristic
(1)
= V
SS
REFH
= 0 Vdc, V
= 5 V ± 10%)
DDA
/V
DDAREF
Electrical Specifications
= 5.0 Vdc ± 10%, V
V
500 k
–0.3
Min
REFL
FE
–1
16
—
16
00
—
8
5
V
1.048 M
SSA
DD
V
Max
REFH
± 1
FF
+1
17
17
01
—
8
8
Inherent within total error
+ 0.3
= 0 Vdc, V
cycles
cycles
REFH
clock
clock
ADC
ADC
Unit
LSB
Hex
Hex
Bits
µA
pF
Hz
µs
V
V
= 5.0 Vdc ± 10%
Freescale Semiconductor
Includes quantization
Tested only at 1 MHz
Includes sampling
Conversion Time
V
V
Comments
V
MC68HC08QA24
REFL
Not tested
In
In
period
= V
time
= V
= V
REFH
REFL
SSA