.....tools.....links......notes for developers

 Some 8051 tools and links

 AT89LP213 / AT89LP214 / LP216 informations 

If you want to test LP213/214/216 in your existing 20 pin PDIP Design:

LP213 / LP214 / LP216 TSSOP - PDIP adapter

A small PCB in Eagle format to adapt LP213 / LP214 or LP216 in TSSOP Package to 20pin PDIP (download in zip, inc. Atmel LIB)

LPTSSOP-PDIP

AT89LP21x Reset
The Reset is active low, can be enabled by a reset fuse and is a little bit different compared with the AT89LPx052 devices or other 8051 devices. During a power-up sequence, the fuse selection is always overridden and therefore the pin will always function as a reset input.

 AT89LP2052 / AT89LP4052 / LPx052EVAL development informations 

AT89LPx052 Crystal (XTAL1-XTAL2) is not working?
The default settings might be that the XTAL Osc. Bypass fuse is enabled.

Ports not working?
Default settings: all Ports are configured for input mode after reset. You have to set P1M0, P1M1, P3M0 and P3M1.

Atmel ISP Programming Cable
Please take a look to our flash / programmers section

Test PWM via ser. Port
We have some small assembler / hex code available to test PWM settings / PWM Modes and you can control the settings with a small vb utility.

Alternatives to PWM?
If you need a different way for PWM then you should have a look to the 16 bit timer and Timer interrupts. Because the timer register counts each clock cycle you easily can achieve various frequencies and pulse width settings.   

Questions ?
Any input is welcome: Mail j.hulzebosch@gms2000.de