跳转到主内容
Knowledgebase
Home
Renesas Electronics China - Knowledgebase

Is leaving the CNVss pin causes problem when connected to Vss with MSU?

Latest Updated:09/29/2006

Question:

(Noise)  When I connect the CNVss pin to the Vss, I leave it open because the MCU is sensitive to noise. Sometimes, the MCU doesn't start up. Is leaving the CNVss pin open a problem? [2006/09/29]

Answer:

Do not leave the CNVss pin open. If it is left open, the mode at start-up will become instable, so proper operation may not occur. Also, note that, in versions other than Mask ROM, the CNVss pin is also used as the Vpp pin. Please refer to the datasheet for information on how to handle the Vpp pin. (#105535)
Suitable Products
3803H
3803L
3823
3850A
3858
38D2
38D5
7544
7545
7546
7547
7548
7549