PIC10F200 is the device number, it is an 8-pin microcontroller (or 6-pin in SMD package) and the smallest and simplest of all the Microchip MCU range. The difference in cost between 10F200, 10F202, 10F204, 10F206 and their slightly more powerful 10F22x cousins is very small, they are all very inexpensive and very easy to use.
They have factory trimmed internal oscillators so the frequency and timing they achieve is very accurate and they can produce almost as much current as an NE555. You do need to write simple software for them but the tools to do it are free and you need something to program them, again very inexpensive. if you can do it in an Arduino Nano you will have no problem with a PIC device. Use simple software loops to set the timing, although the 10F2xx devices do have hardware timers inside them, they are very basic compared to their more popular 16F, 18F, 24F and 33F products.
Brian.