Re: 9S12DP256 oscillator circuit

Started by Doron Fael December 5, 2003
Robert,

Please note the 9S12DP256 does not support the Pierce crystal
configuration. It only supports the Colpitts crystal configuration or an
external 2.5V square-wave clock generator. (Pierce crystal is more robust,
Colpitts is less robust but consumes less power).

The ability to handle Pierce crystal, Colpitts crystal or external
clock-generator is found only in all the other MC9S12D family members -
i.e. 9S12Dx512, 9S12Dx128, 9S12Dx64 and 9S12D32, as well as 9S12DT / J /
G256 - latest mask-set 0L91N.

Hope this helps,
Doron
Nohau Corporation
HC12 In-Circuit Emulators
www.nohau.com/emul12pc.html

At 09:36 05/12/2003 -0800, you wrote:
>Hello
>
>The discussion around the D60A oscillators is prompting me to finally take
>the leap to build a first circuit board around the 112 pin version of the
>9S12DP256 (or one of the pin-compatible other derivatives with fewer CAN
>ports).
>
>Would anyone be willing to share their Eagle design for the cpu library
>part, or may be even the "core" design with the oscillator circuitry?
>
>with much gratitude
>Robert Imhoff




Hello

The discussion around the D60A oscillators is prompting me to finally take the leap to build a first circuit board around the 112 pin version of the 9S12DP256 (or one of the pin-compatible other derivatives with fewer CAN ports).

Would anyone be willing to share their Eagle design for the cpu library part, or may be even the "core" design with the oscillator circuitry?

with much gratitude
Robert Imhoff