Z51F0410 Datasheet, PDF (153/184 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F0410
Product Specification
7. On-chip Debug System
7.1 Overview
7.1.1 Description
On-chip debug System (OCD) of the Z51F0410 MCU can be used for programming the non-volatile
memories and on-chip debugging. Detailed descriptions for programming via the OCD interface can
be found in the following chapter.
Figure 7.1 shows a block diagram of the OCD interface and the On-chip Debug system.
7.1.2 Feature
• Two-wire external interface: 1-wire serial clock input, 1-wire bi-directional serial data bus
• Debugger Access to:
− All Internal Peripheral Units
− Internal data RAM
− Program Counter
− Flash and Data EEPROM Memories
• Extensive On-chip Debug Support for Break Conditions, Including
− Break Instruction
− Single Step Break
− Program Memory Break Points on Single Address
− Programming of Flash, EEPROM, Fuses, and Lock Bits through the two-wire Interface
− On-chip Debugging Supported by Dr.Choice^®
• Operating frequency
Supports the maximum frequency of the target MCU
Format
converter
DSCL
USB
DSDA
Target MCU internal circuit
BDC
DBG
Control
User I/O
CPU
DBG Register
Address bus
Internal data bus
Code memory
-SRAM
-Flash
-EEPROM
Data memory
Peripheral
Figure 7.1 Block Diagram of On-chip Debug System
PS029501-0212
PRELIMINARY
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