I think you'd really struggle getting Espuino into 64kb. It'll do 128k - just - but 64k is a step too far I'm afraid. It's a shame as I'd be pretty sure you can get some bigger chips in that package.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I think you'd really struggle getting Espuino into 64kb. It'll do 128k - just - but 64k is a step too far I'm afraid. It's a shame as I'd be pretty sure you can get some bigger chips in that package.