z8f1621 ZiLOG Semiconductor, z8f1621 Datasheet - Page 209

• Manufacturer Part Number: z8f1621
• Description: High Performance 8-bit Microcontrollers
• Manufacturer: ZiLOG Semiconductor

On-Chip Debugger
Architecture
Operation
PS019921-0308
System
Clock
DBG
Pin
OCD Interface
The Z8 Encore! XP
(OCD) that provides advanced debugging features including:
•
•
•
•
The On-Chip Debugger consists of four primary functional blocks: transmitter, receiver,
auto-baud generator, and debug controller.
On-Chip Debugger.
The On-Chip Debugger uses the DBG pin for communication with an external host. This
one-pin interface is a bi-directional open-drain interface that transmits and receives data.
Data transmission is half-duplex, in that transmit and receive cannot occur simultaneously.
Reading and writing of the Register File
Reading and writing of Program and Data Memory
Setting of Breakpoints
Execution of eZ8 CPU instructions
Detector/Generator
Figure 35. On-Chip Debugger Block Diagram
Auto-Baud
®
F64XX Series products contain an integrated On-Chip Debugger
Transmitter
Receiver
Figure 35
displays the architecture of the
Z8 Encore! XP
Product Specification
Debug Controller
eZ8
Control
TM
®
On-Chip Debugger
F64XX Series
CPU
195