ST72141K2-AUTO データシートの表示（PDF） - STMicroelectronics

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ST72141K2-AUTO

8-bit MCU for automotive with electric-motor control, ADC, 16-bit timers, SPI interface

STMicroelectronics 

ST72141K2-Auto

1.3 EXTERNAL CONNECTIONS

The following figure shows the recommended ex-

ternal connections for the device.

The VPP pin is only used for programming OTP

and EPROM devices and must be tied to ground in

user mode.

The 10nF and 0.1µF decoupling capacitors on the

power supply lines are a suggested EMC perform-

ance/cost tradeoff.

Figure 4. Recommended External Connections

The external reset network is intended to protect

the device against parasitic resets, especially in

noisy environments.

Unused I/Os should be tied high to avoid any un-

necessary power consumption on floating lines.

An alternative solution is to program the unused

ports as inputs with pull-up.

VDD

+

10µF

0.1µF

VPP

VDD

VSS

Optional if Low Voltage

Detector (LVD) is used

VDD

EXTERNAL RESET CIRCUIT

0.1µF

0.1µF

VDD

4.7K

RESET

VSS

See

Clocks

Section

OSC1

OSC2

Or configure unused I/O ports

by software as input with pull-up

10K

VDD

Unused I/O

9/131

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