Z8F042AHJ020SG Datasheet, PDF (197/282 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F082A Series
Product Specification
180
On-Chip Debugger
The Z8 Encore! XP F082A Series devices contain an integrated On-Chip Debugger
(OCD) that provides advanced debugging features including:
• Single pin interface
• Reading and writing of the register file
• Reading and writing of program and data memory
• Setting of breakpoints and watchpoints
• Executing eZ8 CPU instructions
• Debug pin sharing with general-purpose input-output function to maximize pins avail-
able to the user (8-pin product only)
Architecture
The on-chip debugger consists of four primary functional blocks: transmitter, receiver,
auto-baud detector/generator and debug controller. Figure 23 displays the architecture of
the on-chip debugger.
Auto-Baud
Detector/Generator
System Clock
DBG Pin
PS022827-1212
Transmitter
Receiver
Debug Controller
Figure 23. On-Chip Debugger Block Diagram
PRELIMINARY
On-Chip Debugger