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UPD17933 Datasheet(PDF) 19 Page - NEC

Part # UPD17933
Description  4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE
PDF  252 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD17933 Datasheet(HTML) 19 Page - NEC

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µPD17933, 17934
1.4 Cautions on Using TEST Pin
When VDD is applied to the TEST pin, the device is set in the test mode. Therefore, be sure to keep the wiring
length of this pin as short as possible, and directly connect it to the GND pin.
If the wiring length between the TEST pin and GND pin is too long, or if external noise is superimposed on
the TEST pin, generating a potential difference between the TEST pin and GND pin, your program may not run
normally.
GND TEST
Short



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