Lpc2000

---- Original Message ----
From: "Gus" <gus_is_working@...>
To: <lpc2000@yahoogroups.com>
Sent: Monday, December 26, 2005 7:30 PM
Subject: [lpc2000] The right crystal for 70Mhz LPC2103

> What would be the closest crystal to 70 Mhz while keeping the
> standard UART baud rates?
>
> It would be nice if it would work with x6 pll multiplier so we an
> stop the pll to go in lower power mode

The LPC2101/02/03 have the fractional baudrate generator, so you can get
almost any baudrates with any crystal.  10 MHz lets you hit 70 MHz exactly,
and pclk = 70 MHz also gets almost exact baud rates without the fractional
divider.

10 MHz only lets you do ISP with 38400 bps, but it is less important with
the limited amount of flash to program.

Karl Olsen