Microcontroller Programming
4-14
T8xC5121 Starter Kit User Guide
4186E–SCR–05/04
After Reset, if an AT24C128 EEPROM has been detected at U6 (see Figure 4-1), the
on-chip ROM Bootloader downloads the external EEPROM content (16K bytes) in the
Code RAM.
CAUTION:
If the ROM code marked on the package is DRW (Bootloader 1.2.2 version) or higher,
an hardware modification must be done on the 1.2.0 version Demoboard.
The wires to pins 5 and 6 of U6 must be cut. In place, the following wires must be added
Pin 26 of PLCC52 (P2.3) must be connected to U6.6
Pin 29 of PLCC52 (P2.0) must be connected to U6.5
Figure 4-5. EEPROM at U6 of Demonstration Board
U6
