P89C51RC2

INTEGRATED CIRCUITS P89C51RA2xx/RB2xx/RC2xx/RD2xx 80C51 8-bit Flash microcontroller family 8KB/16KB/32KB/64KB ISP/IAP Flash with 512B/512B/512B/1KB RAM Preliminary data Supersedes data of 2002 May 20 2002 Jul 18 Philips Semiconductors http://www.Datasheet4U.com/ Philips Semiconductors Preliminary data 80C51 8-bit Flash microcontroller family 8KB/16KB/32KB/64KB ISP/IAP Flash with 512B/512B/512B/1KB RAM P89C51RA2/RB2/RC2/RD2xx DESCRIPTION The P89C51RA2/RB2/RC2/RD2xx contains a non-volatile 8KB/16KB/32KB/64KB Flash program memory that is both parallel programmable and serial In-System and In-Application Programmable. In-System Programming (ISP) allows the user to download new code while the microcontroller sits in the application. In-Application Programming (IAP) means that the microcontroller fetches new program code and reprograms itself while in the system. This allows for remote programming over a modem link. A default serial loader (boot loader) program in ROM allows serial In-System programming of the Flash memory via the UART without the need for a loader in the Flash code. For In-Application Programming, the user program erases and reprograms the Flash memory by use of standard routines contained in ROM. The dev ice supports 6-c loc k/12-c loc k mode selec tion by programming a Flas h bit using parallel programming or In-Sy stem Programming. In addition, an SFR bit (X2) in the cloc k control regis ter (CKCON) als o selec ts between 6-c lock/12-c lock mode. Addit...