ST72561J6-Auto STMicroelectronics, ST72561J6-Auto Datasheet - Page 299

• 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

ST72561-Auto
Figure 143. Recommended C
1.
Figure 144. Typical application with ADC
Analog power supply and reference pins
Depending on the MCU pin count, the package may feature separate V
power supply pins. These pins supply power to the A/D converter cell and function as the
high and low reference voltages for the conversion. In smaller packages V
are not available and the analog supply and reference pads are internally bonded to the V
and V
Separation of the digital and analog power pins allow board designers to improve A/D
performance. Conversion accuracy can be impacted by voltage drops and noise in the event
of heavily loaded or badly decoupled power supply lines (see
guidelines).
General PCB design guidelines
To obtain best results, some general design and layout rules should be followed when
designing the application PCB to shield the noise-sensitive, analog physical interface from
noise-generating CMOS logic signals.
●
●
Figure 143
time and reduced to allow the use of a larger serial resistor (R
4 MHz.
Use separate digital and analog planes. The analog ground plane should be connected
to the digital ground plane via a single point on the PCB.
Filter power to the analog power planes. It is recommended to connect capacitors, with
good high frequency characteristics, between the power and ground lines, placing
SS
pins.
V
AIN
shows that depending on the input signal variation (f
R
AIN
C
1000
AIN
100
0.1
10
1
AINx
Doc ID 12370 Rev 8
AIN
0.01
/R
AIN
values
0.1
f
V
AIN
DD
(KHz)
V
0.6V
V
0.6V
T
T
1
AIN)
Cain 10 nF
Cain 22 nF
Cain 47 nF
AIN
2kΩ(max)
. It is valid for all f
I
±1µA
), C
L
10
AIN
General PCB design
can be increased for stabilization
10-Bit A/D
Conversion
Electrical characteristics
ADC
DDA
DDA
frequencies
and V
ST72XXX
and V
C
6pF
ADC
SSA
SSA
≤
analog
299/324
pins
DD