Hi Everyone...
Being a noob with the msp430, we purchased two launchpad kits. I noticed the 32khz crystal (MS3V-T1R) is a micro can style. Since we are short for space on an existing PCB we'd like to use an SMD crystal if possible.
Any of you forsee an issue using these crystals? I see some specs are the same, such as similar load capacitance, 20ppm, Rs is 50/70K. I would tend to think it should be fine. I am compelled to ask since working with atmel a lot I've come across uC chips that won't work without a low ESR (low swing) crystal despite everything else being fine.
http://www.microcrystal.com/Products/Quartz-Crystals/10---2100-kHz/SMD-Ceramic.aspx
I'd be curious to know if I could use the smallest crystal on this page... the CM8V-T1A. All the specs seem the same except series resistance which is 90K instead of 50K. Uses only 0.5uW too... less than the launchpad crystal..
http://focus.ti.com/lit/an/slaa322b/slaa322b.pdf
I noticed in this document, it says that typical ESR is 30K to 100K... should be ok to use CM8V-T1A?
Thanks
Jeff