Z8FMC16100 Series Flash MCU
Product Specification
241
On-Chip Debugger
The Z8FMC16100 Series Flash MCU device includes an integrated On-Chip Debugger
(OCD) that provides advanced debugging features, including:
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Reading and writing of the Register File
Reading and writing of program and data memory
Setting of break points
Execution of eZ8 CPU instructions
Architecture
The On-Chip Debugger consists of four primary functional blocks: Transmitter, Receiver,
Autobaud Generator, and Debug Controller. Figure 41 illustrates the architecture of the
On-Chip Debugger.
System
Clock
Autobaud
Detector/Generator
eZ8 CPU
Control
Transmitter
Receiver
Debug Controller
DBG Pin
Figure 41. On-Chip Debugger Block Diagram
OCD Interface
The On-Chip Debugger (OCD) uses the DBG pin for communication with an external
host. This one-pin interface is a bidirectional open-drain interface that transmits and
PS024604-1005
P R E L I M I N A R Y
Architecture
ZILOG [ ZILOG, INC. ]
