ST72561J6-Auto STMicroelectronics, ST72561J6-Auto Datasheet - Page 300

• Manufacturer Part Number: ST72561J6-Auto
• Description: 8-bit MCU for automotive
• Manufacturer: STMicroelectronics

Specifications of ST72561J6-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years at 55 °C
• 5 Power Saving Modes: halt, auto wake up from halt, active halt, wait and slow

Electrical characteristics
300/324
●
●
Software filtering of spurious conversion results
For EMC performance reasons, it is recommended to filter A/D conversion outliers using
software filtering techniques.
Figure 145. Power supply filtering
ADC accuracy
Table 123. ADC accuracy with f
1. Data based on characterization results, not tested in production. ADC accuracy vs. negative injection
2. Under characterization.
Symbol
|E
|E
|E
|E
|E
current: injecting negative current on any of the standard (non-robust) analog input pins should be avoided
as this significantly reduces the accuracy of the conversion being performed on another analog input. It is
recommended to add a Schottky diode (pin to ground) to standard analog pins which may potentially inject
negative current. The effect of negative injection current on robust pins is specified in
pin
Any positive injection current within the limits specified for I
pin characteristics
0.1µF and optionally, if needed 10pF capacitors as close as possible to the ST7 power
supply pins and a 1 to 10µF capacitor close to the power source (see
The analog and digital power supplies should be connected in a star network. Do not
use a resistor, as V
resistance would cause a voltage drop and a loss of accuracy.
Properly place components and route the signal traces on the PCB to shield the analog
inputs. Analog signals paths should run over the analog ground plane and be as short
as possible. Isolate analog signals from digital signals that may switch while the analog
inputs are being sampled by the A/D converter. Do not toggle digital outputs on the
same I/O port as the A/D input being converted.
O
G
D
T
L
|
|
characteristics.
|
|
|
Total unadjusted error
Offset error
Gain error
Differential linearity error
Integral linearity error
does not affect the ADC accuracy
(1)
(1)
Parameter
POWER
SUPPLY
SOURCE
V
DD
DDA
1 to 10µF
is used as a reference voltage by the A/D converter and any
(1)
(1)
Doc ID 12370 Rev 8
ST7
DIGITAL NOISE
FILTERING
(1)
CPU
EXTERNAL
NOISE
FILTERING
= 8 MHz, f
0.1µF
0.1µF
Conditions
ADC
INJ(PIN)
= 4 MHz R
V
V
V
V
SS
DD
DDA
SSA
and ΣI
ST72XXX
INJ(PIN)
AIN
in
Typ
2.5
1.5
< 10kW, V
4
3
Section 20.9: I/O port
Section 20.9: I/O port
Figure
Note
ST72561-Auto
Max
4
2
DD
(2)
145).
= 5V
Unit
LSB