Chris Kann
KORG RK-100 Retrofit
Replaces the RK-100 power supply and cpu boards. The 80pin TQFP is for the PIC18F micro I'll use. The FRAM is up and to the left of the PIC (FM1608 or FM1808). Quick note on using FRAM, you MUST cycle the chip enable line on the ram in order for it to latch the address value. So unlike using an ordinary SRAM where you could simply pull the CE to GND you actually need to cycle CE on every read / write.
FRAM is a non volatile SRAM, and almost a direct drop-in replacement for battery backed save ram, except for this one difference.
KORG RK-100 Retrofit
Replaces the RK-100 power supply and cpu boards. The 80pin TQFP is for the PIC18F micro I'll use. The FRAM is up and to the left of the PIC (FM1608 or FM1808). Quick note on using FRAM, you MUST cycle the chip enable line on the ram in order for it to latch the address value. So unlike using an ordinary SRAM where you could simply pull the CE to GND you actually need to cycle CE on every read / write.
FRAM is a non volatile SRAM, and almost a direct drop-in replacement for battery backed save ram, except for this one difference.