Z8F1680SH020SG Datasheet, PDF (329/412 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F1680 Series
Product Specification
304
Table 163 contains a summary of the On-Chip Debugger commands; each is further
described following the table. The table indicates those commands that operate when the
device is not in DEBUG mode (normal operation) and those commands that are disabled
by programming the Flash Read Protect option bit.
Table 163. On-Chip Debugger Commands
Debug Command
Command
Byte
Enabled when
not in DEBUG
mode?
Disabled by Read Protect Option Bit
Read Revision
00H
Yes
–
Write OCD Counter Register
01H
–
–
Read OCD Status Register
02H
Yes
–
Read OCD Counter Register
03H
–
–
Write OCD Control Register
04H
Yes
–
Read OCD Control Register
05H
Yes
–
Write Program Counter
06H
–
Disabled.
Read Program Counter
07H
–
Disabled.
Write Register
08H
–
Writes to on-chip peripheral registers
are enabled. Writes to the on-chip RAM
are disabled.
Read Register
09H
–
Reads from on-chip peripheral registers
are enabled. Reads from the on-chip
RAM are disabled.
Write Program Memory
0AH
–
Disabled.
Read Program Memory
0BH
–
Disabled.
Write Data Memory
0CH
–
Disabled.
Read Data Memory
0DH
–
Disabled.
Read Program Memory CRC
0EH
–
–
Reserved
0FH
–
–
Step Instruction
10H
–
Disabled.
Stuff Instruction
11H
–
Disabled.
Execute Instruction
12H
–
Disabled.
Write Line Control Register
18H
–
–
Read Line Control Register
19H
–
–
Read Baud Reload Register
1BH
–
–
Note: Unlisted command byte values are reserved.
PS025015-1212
PRELIMINARY
On-Chip Debugger