LCD display using external Crystal

1074316

Hi,

I need to control an LCD display using MSP430F3xx,instead of using 32K crystal, is it possible to use a HF crystal like 8MHz for

Basic Timer1 clock?.the LCD display frequency range is (0 to 300 Hz).

Thnakyou...

William Goh over 17 years ago

Chakra,

According to the datasheet, it looks like the 3xx family does NOT support 8MHz as an external crystal. It looks like it supports 32kHz crystal only.

The 4xx devices also supports LCD and higher frequency crystals, is that an option?

William

1074316 over 17 years ago in reply to William Goh

William,

Thankyou.

I am very sorry, there was a mistake.I was suppose to type MSP430F43xx..

Regards.

Priya Thanigai over 17 years ago in reply to 1074316

Yes, it is possible to source BT1 off an 8MHz HF crystal.

You could select SMCLK as BT1 source in BTCTL (BTSSEL=1 BTDIV=0) and select HFXT2 as the clock source for SMCLK in FLL_CTL1 (SELS = 1). Use a HFXT2 code example to help set up the HF crystal correctly. http://focus.ti.com/mcu/docs/mcuflashtools.tsp?sectionId=95&tabId=1538&familyId=342

**Attention** This is a public forum

MSP low-power microcontroller forum