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Programator pentru Atmel AT27C256R-70PU

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Salut,

Caut de ceva vreme (dar fara succes din pacata) un programator care sa poata scrie pe un Chip AT27C256R-70PU (https://ro.mouser.com/ProductDetail/556-AT27C256R70PU/)
Am gasit un singur model de programator dar destul de scump pentru ce vreau eu sa fac.. undeva la 800 lei.

Gasesc un programator de buget (100-200 lei) pe undeva? Sau singura solutie "ieftina" este sa folosesc un Arduino si sa scriu pe chip?

Multumesc,
Claudiu

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In lista pentru TL866A/CS (Software Version: V6.50, desi eu am 6.85) de la https://rarecomponents.com/store/tl866-device-list apare AT27C256R

Si in lista pentru TL866II Plus (Software Version: V10.75) http://www.autoelectric.cn/MiniPro/TL866II_List.txt apare AT27C256R (chiar daca in anumite cazuri nu e musai sa fie de la acelasi producator daca se citeste foaia de catalog)

 

Este adevarat ca in manualul de la varianta TL866+ scrie asa:

(TL866II programming voltage VPP only supports up to 18V, for early 27C series ROM, the chip with 21V 25V VPP voltage no longer supports writing, but can be read. If it is used, the VPP with the same type of programming voltage can be used as 13V or 12V chip replacement, for example: 27C32 21V or13V Vpp chip ,Pay attention to the VPP voltage)

 

Si la producator pe site apare ca varianta noua poare furniza tensiune de programare pentru VPP maxim 18V, in loc de 21V ca la modelele vechi.

TL866-new-vs-oldd.png

 

Eu am varinata veche de programator si 27C256R apare in lista si la selectia automata de VPP este 13.5V

 

TL866A.png

 

Totusi ai verificat catalogul memoriei? http://ww1.microchip.com/downloads/en/DeviceDoc/doc0014.pdf

Cat are nevoie pe VPP pentru programare (pag. 7) ? si cat e VPP maxim suportat (pag.3) ?

 

De ce la tine in documentatie scrie ca nu se poate programa 27? Nu stiu sa iti raspund dar eu am programat memorii din familia 27C mult mai vechi ca ce ai tu si au functionat fara probleme.

Edited by Stefan
corecturi si atasare poze
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