Datasheet Summary
NEe Microputers, Inc.
4-81T SINGLE CHIP MICROPUTER
NEe fLPD550
OESCR IPTION
The f,lPD550 is a f,l-45 4-bit single chip microputer with high voltage outputs that can be pulled to
- 35V for direct interfacing to vacuum fluorescent displays_ The f,lPD550 is manufactured with a standard PMOS process, allowing use of a single -10V power supply_ The f,lPD550 provides all of the hardware Features of the f,l-45 family, except that it has a 640 x 8 bit ROM to reduce device cost_ The f,lPD550 executes all 58 instructions of the f,l-45 instruction set_
PIN CONFIGURATION
Cll PCo PCl
PC2 PC3 PDO PDl PD2 PD3 PEO PEl PE2 PE3 VSS
Clo VGG RESET iN'f
PA3 PA2
PAl PAO PGO PF3 PF2 PFl...