參數(shù)資料
型號: ST72T141K2MARE
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDSO34
封裝: 0.300 INCH, LEAD FREE, PLASTIC, SOP-34
文件頁數(shù): 121/131頁
文件大小: 3096K
代理商: ST72T141K2MARE
ST72141K2-Auto
9/131
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 0.1F decoupling capacitors on the
power supply lines are a suggested EMC perform-
ance/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 4. Recommended External Connections
VPP
VDD
VSS
OSC1
OSC2
RESET
VDD
0.1F
+
See
Clocks
Section
VDD
0.1F
EXTERNAL RESET CIRCUIT
Or configure unused I/O ports
Unused I/O
10F
4.7K
10K
by software as input with pull-up
VDD
Detector (LVD) is used
Optional if Low Voltage
VDD
VSS
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