ST72321J7-Auto STMicroelectronics, ST72321J7-Auto Datasheet - Page 219
ST72321J7-Auto
Manufacturer Part Number
ST72321J7-Auto
Description
8-bit MCU for automotive with 48 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
Manufacturer
STMicroelectronics
Datasheet
1.ST72321R9-AUTO.pdf
(243 pages)
Specifications of ST72321J7-Auto
Hdflash Endurance
100 cycles, data retention 20 years
Clock Sources
crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
4 Power Saving Modes
Halt, Active Halt, Wait and Slow
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ST72321xx-Auto
19.12.3
Figure 101. ADC error classification
1023
1022
1021
7
6
5
4
3
2
1
0
V
SSA
Digital Result ADCDR
1LSB
ADC accuracy
Conditions: V
Table 136. ADC accuracy
1. ADC Accuracy versus Negative Injection Current: Injecting negative current may reduce the accuracy of
2. Data based on characterization results, monitored in production to guarantee 99.73% within ± max value
Symbol
1
E
O
|E
|E
|E
|E
|E
the conversion being performed on another analog input.
Any positive injection current within the limits specified for I
affect the ADC accuracy.
from -40°C to 125°C (± 3distribution limits).
IDEAL
O
G
D
T
L
2
|
|
|
|
|
3
=
Total unadjusted error
Offset error
Gain error
Differential linearity error
Integral linearity error
V
--------------------------------------------
AREF
4
DD
1024
Parameter
= 5V
–
5
1 LSB
V
SSA
E
6
(1)
T
IDEAL
E
L
7
(1)
(2)
Doc ID 13829 Rev 1
E
D
1021 1022 1023 1024
(3)
CPU in run mode @ f
(1)
E
G
Conditions
V
AREF
INJ(PIN)
Legend:
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
E
between the actual and the ideal transfer curves.
E
actual transition and the first ideal one.
E
transition and the last actual one.
E
deviation between actual steps and the ideal
one.
E
between any actual transition and the end point
correlation line.
T
O
G
D
L
= Total Unadjusted Error: maximum deviation
= Integral Linearity Error: maximum deviation
= Offset Error: deviation between the first
= Gain Error: deviation between the last ideal
= Differential Linearity Error: maximum
ADC
and I
V
in
(LSB
2 MHz
INJ(PIN)
IDEAL
Electrical characteristics
)
in
Section 19.8
Typ
0.5
3
2
1
Max
4
3
3
2
does not
(2)
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Unit
LSB
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