[HELP] Hope RFM 50 module

Hi guys,

I have question here. Does anybody have any experience with hoperf RFM series ?
I need help to determine what kind of uC that it uses. My first goal is to try make the LED blink in some ports (which it should be an easy task to do) however based on the datasheet, it doesn't mention enough information about the uC.

Let me make some points to make it clear of my questions;
1) What kind of specific uC that RFM50 use ?
2) Is it possible to program and do interfacing for RFM50 with Keil ?
3) If Yes, what kind IC that I should use for library ?
4) Is it same code like AT89X51/2 series to blink the LED ?

I try to use Keil uVision to program it. Please help me, I'm kind a stuck here

I tried to follow reading some of the links here, but I believe it's kind a different type of interfacing

Thank you

Cheers

1) Si1000
2) Yes, Keil and SDCC are the two compilers I'm aware of for 8051 based chips.
3) Si1000
4) No idea

Ah thank you but well I'm kind a new with this microC but the thing should work in the same way like other uC. However, I'm facing difficulties to find the way to communicate between Rx and Tx, let's say I want to transmit the LED. The thing that I've already observed is the application notes from Silicon Labs, which I have no idea with Master and slave mode from the code.

Could somebody tell me what should I do first to transmit between Tx and Rx, just want to make sure my idea is going to work.

Thank you