In SX Microcontrollers, SX/B Compiler and SX-Key Tool, loojade wrote:

Hallo everybody,

Still my experience on SX very low so... I did a application with SX28 using internal clock (4MHz); everything work well. Now I would like to test the system with external clock 50MHz to improve the response of the system.
This are  the questions: 

- Is the 50MHz resonator  marked 500Q ???

- 50 MHz resonator has 3 pin. the midle one must connected to GND and the side pins to OSC1 and OSC2... right???

- between OSC1 and OSC2 is it necessary a 10Kohm resistor?

- Is the correct DEVICE code line  the following??? 

[code]
DEVICE          SX28, OSCHS2, TURBO, STACKX, OPTIONX
FREQ            50_000_000, 45_000_000
[/code]

Before with internal clock I used the following:

[code]
DEVICE          SX28, OSC4MHZ, TURBO, STACKX, OPTIONX
FREQ            4_000_000, 3_600_000
IRC_CAL         IRC_4MHZ                        
[/code]

Must I set any thing in SX-Key before program SX chip???

Thanks in advance for your help

Loojade

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