Z8F011ASH020EG2156 ZiLOG, Z8F011ASH020EG2156 Datasheet - Page 162

• Manufacturer Part Number: Z8F011ASH020EG2156
• Description: 8-bit Microcontrollers - MCU 1K FLASH 256B RAM 16B NVDS
• Manufacturer: ZiLOG

Specifications of Z8F011ASH020EG2156

• Rohs: yes
• Core: eZ8
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 1 KB
• Data Ram Size: 256 B
• On-chip Adc: No
• Package / Case: SOIC-20
• Mounting Style: SMD/SMT
• Interface Type: UART
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 17
• Number Of Timers: 2
• Program Memory Type: Flash
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V

PS025113-1212
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
Write Data Memory
Read Data Memory
On-Chip Debugger Commands
Runtime Counter
The OCD contains a 16-bit runtime counter. It counts system clock cycles between break-
points. The counter starts counting when the OCD leaves DEBUG Mode and stops count-
ing 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 (FRP).
The FRP prevents the code in memory from being read out of the Z8 Encore! F0830 Series
products. When this option is enabled, several of the OCD commands are disabled.
Table 95 summarizes the On-Chip Debugger commands. This table indicates the com-
mands that operate when the device is not in DEBUG Mode (normal operation) and the
commands that are disabled by programming the FRP.
Table 95. On-Chip Debugger Command Summary
Command
Byte
0AH
0BH
0CH
0DH
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
Enabled when not
in DEBUG Mode?
Yes
Yes
Yes
Yes
–
–
–
–
–
–
–
–
–
–
allowed to be written to the Flash Con-
Only writes of the Flash Memory Con-
trol registers are allowed. Additionally,
only the Mass Erase command is
Flash Read Protect Option Bit
Cannot clear DBGMODE bit
On-Chip Debugger Commands
Z8 Encore!
Disabled by
trol register.
Product Specification
Disabled
Disabled
Disabled
Disabled
Disabled
Yes
–
–
–
–
–
–
®
F0830 Series
FFFFH
.
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