z16f2811 ZiLOG Semiconductor, z16f2811 Datasheet - Page 303

• Manufacturer Part Number: z16f2811
• Description: High Performance Microcontrollers
• Manufacturer: ZiLOG Semiconductor

Option Bits
Operation
Option Bit Address Space
PS022006-0207
Option Bit Configuration By Reset
Option bits allow user configuration of certain aspects of the ZNEO Z16F Series
operation. The feature configuration data is stored in the Program memory and read during
Reset. The features available for control using the option bits are:
•
•
•
•
•
•
•
Each time the option bits are programmed or erased, the device must be Reset for the
change to take place. During any reset operation (System Reset, Short Reset, or Stop
Mode Recovery), the option bits are automatically read from the Program memory and
written to Option Configuration registers. The Option Configuration registers control
operation of the device. Option Bit control register are loaded before the device exits
Reset and the ZNEO CPU begins code execution. The Option Configuration registers are
not part of the Register file and are not accessible for read or write access.
The first four bytes of Program Memory at addresses
through
bytes are used to configure user specific options. You can change the option bits to meet
the application needs.
The ability to prevent accidental programming and erasure of the user code in Program
WDT time-out response selection–interrupt or Reset.
WDT enabled at Reset.
The ability to prevent unwanted read access to user code in Program memory.
memory.
Voltage Brownout (VBO) configuration—always enabled or disabled during STOP
mode to reduce STOP mode power consumption.
Oscillator mode selection for high, medium, and low power crystal oscillators, or
external RC oscillator.
PWM pin set up for motor control application.
0003H
(see
Table 159
P R E L I M I N A R Y
on page 291) are reserved for the user option bits. These
0000H
(see
Product Specification
Table 158
ZNEO
™
Z16F Series
on page 290)
Option Bits
289