XC912BC32CFU8 Motorola Semiconductor Products, XC912BC32CFU8 Datasheet - Page 340
XC912BC32CFU8
Manufacturer Part Number
XC912BC32CFU8
Description
M68HC12B Family Data Sheet
Manufacturer
Motorola Semiconductor Products
Datasheet
1.XC912BC32CFU8.pdf
(362 pages)
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Electrical Specifications
19.9 Analog Converter Operating Characteristics
Data Sheet
340
8-bit resolution
8-bit differential non-linearity
8-bit integral non-linearity
8-bit absolute error
2, 4, 8, and 16 ATD sample clocks
10-bit resolution
10-bit differential non-linearity
10-bit integral non-linearity
10-bit absolute error
Maximum source impedance
1. V
2. V
3. At V
4. Eight-bit absolute error of 1 count (20 mV) includes 1/2 count (10 mV) inherent quantization error and 1/2 count (10 mV)
5. Maximum source impedance is application-dependent. Error resulting from pin leakage depends on junction leakage into
2, 4, 8, and 16 ATD sample clocks
window parameters affecting the ATD accuracy, but they are not tested.
circuit (differential, integral, and offset) error.
the pin and on leakage due to charge-sharing with internal capacitance.
Error from junction leakage is a function of external source impedance and input leakage current. Expected error in result
value due to junction leakage is expressed in voltage (V
Where
DD
RH
I
speed, the number of channels being scanned, and source impedance. For 8-bit conversions, charge pump leakage is
computed as:
OFF
−V
REF
= 5.0 Vdc ± 10%, V
RL
is a function of operating temperature. Charge-sharing effects with internal capacitors are a function of ATD clock
V
V
= 5.12 V, one 8-bit count = 20 mV, and one 10-bit count = 5 mV. INL and DNL are characterized using the process
ERRJ
ERRJ
≥ 5.12 V; V
(2)
(2)
= 0.25 pF × V
= R
(3), (4)
(3)
S
Characteristic
× I
DDA
(3)
OFF
(3)
SS
−V
(3)
(3)
= 0 Vdc, T
SSA
DDA
= 5.12 V
× R
(1)
S
A
× ATDCLK/(8 × number of channels)
= T
L
to T
Electrical Specifications
H
, ATD clock = 2 MHz, unless otherwise noted
ERRJ
):
Symbol
1 count
1 count
DNL
DNL
INL
INL
AE
AE
R
S
−0.5
–2.5
Min
−1
−1
–2
–2
—
—
—
M68HC12B Family — Rev. 8.0
Typ
20
20
—
—
—
—
—
—
5
See
Max
+0.5
2.5
+1
+1
—
—
2
2
(5)
MOTOROLA
Count
Count
Count
Count
Count
Count
Unit
mV
mV
kΩ
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