參數(shù)資料
型號: ST72141K2B3/XXX
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32
封裝: 0.400 INCH, PLASTIC, SDIP-32
文件頁數(shù): 123/133頁
文件大?。?/td> 2615K
代理商: ST72141K2B3/XXX
Obsolete
Product(s)
- Obsolete
Product(s)
ST72141K2
9/133
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 de-
vices and must be tied to ground in user mode.
The 10 nF and 0.1 F 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 5. 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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