Я до конца этого месяца, должен зокончить проект на S3C4530

Самое близкое, для замены S3C4530, я нашол Netsilicon
NS9360 (Codename Cooper)
NS9360B-1-C103 ARM9 Controller 10.95 USD for 10K pcs.
Fast Ethernet MII
4 serial channel (UART or SPI or HDLC)
I2C
LCD controller
"we can help you with some very good new silicon and we have a strategy for long term availability (most of our customers ask for 8-10 years)."