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ST72213G1M3 数据表(PDF) 9 Page - STMicroelectronics

部件名 ST72213G1M3
功能描述  8-BIT MCU WITH 4 TO 8K ROM/OTP/EPROM, 256 BYTES RAM, ADC, WDG, SPI AND 1 OR 2 TIMERS
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST72213G1M3 数据表(HTML) 9 Page - STMicroelectronics

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ST72101/ST72212/ST72213
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 10 nF and 0.1
µF decoupling capacitors on
the power supply lines are a suggested EMC per-
formance/cost tradeoff.
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.
Figure 8. Recommended External Connections
VPP
VDD
VSS
OSCIN
OSCOUT
RESET
VDD
0.1
µF
+
See
Clocks
Section
VDD
0.1
µF
0.1
µF
EXTERNAL RESET CIRCUIT
Or configure unused I/O ports
Unused I/O
10nF
4.7K
10K
by software as input with pull-up
VDD
9


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