Z8F082A28100KIT ZILOG [Zilog, Inc.], Z8F082A28100KIT Datasheet - Page 171
Z8F082A28100KIT
Manufacturer Part Number
Z8F082A28100KIT
Description
Z8 Encore XP-R F08xA Series with eXtended Peripherals
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.Z8F082A28100KIT.pdf
(244 pages)
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On-Chip Debugger Commands
PS024705-0405
Debug Command
Read OCD Revision
Reserved
Read OCD Status Register
Read Runtime Counter
Write OCD Control Register
Read OCD Control Register
Write Program Counter
Read Program Counter
Write Register
Read Register
Write Program Memory
Read Program Memory
Runtime Counter
The On-Chip Debugger contains a 16-bit Runtime Counter. It counts system clock cycles
between Breakpoints. The counter starts counting when the On-Chip Debugger leaves
DEBUG mode and stops counting when it enters DEBUG mode again or when it reaches
the maximum count of
The host communicates to the On-Chip Debugger by sending OCD commands using the
DBG interface. During normal operation, only a subset of the OCD commands are avail-
able. In DEBUG mode, all OCD commands become available unless the user code and
control registers are protected by programming the Flash Read Protect Option bit (
The Flash Read Protect Option bit prevents the code in memory from being read out of the
Z8 Encore! XP
commands are disabled. Table 99 on page 158 is a summary of the On-Chip Debugger
commands. Each OCD command is described in further detail in the bulleted list follow-
ing this table. Table 99 also indicates those commands that operate when the device is not
in DEBUG mode (normal operation) and those commands that are disabled by program-
ming the Flash Read Protect Option bit.
®
Command
F08xA Series products. When this option is enabled, several of the OCD
Byte
0AH
0BH
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
FFFFH
P R E L I M I N A R Y
Enabled when NOT
in DEBUG mode?
.
Yes
Yes
Yes
Yes
–
–
–
–
–
–
–
–
Only writes of the Flash Memory Control
the Mass Erase command is allowed to
registers are allowed. Additionally, only
be written to the Flash Control register.
Flash Read Protect Option Bit
Cannot clear DBGMODE bit
Z8 Encore! XP
Disabled by
Product Specification
Disabled
Disabled
Disabled
Disabled
Disabled
–
–
–
–
–
®
On-Chip Debugger
F08xA Series
FRP
).
153
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