[aprssig] GPS and PIC16F628

Andrew Rich vk4tec at tech-software.net
Wed Apr 24 18:18:46 CDT 2013


I think it reads as 

1. Low voltage should be 0.8 volts or less
2. High voltage should be 2 volts or better 

- Andrew -
  ----- Original Message ----- 
  From: Andrew Rich 
  To: TAPR APRS Mailing List 
  Sent: Thursday, April 25, 2013 8:45 AM
  Subject: GPS and PIC16F628


  Hello

  Wondering if someone can help 

  I am having troubles spotting the minimum voltage swing for a GPS voltage on a PIC16F628 PIC MCU USART

  http://ww1.microchip.com/downloads/en/devicedoc/40300c.pdf

  I want to use Scotts TTL GPS but I need to make sure it swings high enough to make 1 and 0

  So I can do away with the MAX232 chip I am using now 

  - Andrew - 
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