 English |
|
|
|
|
|
|
|
| MC68HC908GP32 Datasheet, PDF (384/410 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs) | |||
| |||
| ◁ |
Freescale Semiconductor, Inc.
Electrical Specifications
23.13 ADC Characteristics
Characteristic(1)
Symbol
Min
Max
Unit
Comments
Supply voltage
VDDAD should be tied to
VDDAD
2.7
5.5
(VDD min) (VDD max)
V
the same potential as
VDD via separate
traces.
Input voltages
VADIN
0
VDDAD
V
VADIN ⤠VREFH
Resolution
BAD
8
8
Bits
Absolute accuracy
(VREFL = 0 V,
AAD
â
VREFH = VDDAD = 5 V ± 10%)
ADC internal clock
fADIC
0.5
±1
1.048
LSB
MHz
Includes quantization
tAIC = 1/fADIC, tested
only at 1 MHz
Conversion range
RAD
VREFL
VREFH
V
VREFH = VDDAD
VREFL = VSSAD
Power-up time
tADPU
16
tAIC cycles
Conversion time
Sample time(2)
Zero input reading(3)
Full-scale reading(3)
tADC
16
tADS
5
ZADI
00
FADI
FE
17
tAIC cycles
â
tAIC cycles
01
Hex
FF
Hex
VIN = VREFL
VIN = VREFH
Input capacitance
Input leakage(4)
Port B
CADI
â
(20) 8
pF
â
â
±1
µA
Not tested
Notes:
1. VDD = 5.0 Vdc ± 10%, VSS = 0 Vdc, VDDAD = 5.0 Vdc ± 10%, VSSAD = 0 Vdc, VREFH = 5.0 Vdc ± 10%, VREFL = 0
2. Source impedances greater than 10 k⦠adversely affect internal RC charging time during input sampling.
3. Zero-input/full-scale reading requires sufficient decoupling measures for accurate conversions.
4. The external system error caused by input leakage current is approximately equal to the product of R source and input
current.
Technical Data
382
MC68HC908GP32â¢MC68HC08GP32 â Rev. 6
Electrical Specifications
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese