Z8F0830HH020SG Datasheet, PDF (146/257 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore!^® F0830 Series
Product Specification
128
Bit
[3]
VBO_AO
[2]
FRP
[1]
[0]
FWP
Description (Continued)
Voltage Brown-Out Protection Always On
0 = Voltage Brown-Out protection is disabled in STOP Mode to reduce total power con-
sumption.
1 = Voltage Brown-Out protection is always enabled, even during STOP Mode. This setting
is the default setting for unprogrammed (erased) Flash.
Flash Read Protect
0 = User program code is inaccessible. Limited control features are available through the
On-Chip Debugger.
1 = User program code is accessible. All On-Chip Debugger commands are enabled. This is
the default setting for unprogrammed (erased) Flash.
Reserved
This bit is reserved and must be programmed to 1.
Flash Write Protect
This option bit provides Flash program memory protection.
0 = Programming and erasure disabled for all Flash program memory. Programming, page
erase and mass erase through user code is disabled. Mass erase is available using the
On-Chip Debugger.
1 = Programming, page erase and mass erase are enabled for all Flash program memory.
Table 82. Flash Options Bits at Program Memory Address 0001H
Bit
7
6
5
4
3
Field VBO_RES
Reserved
XTLDIS
RESET
U
U
U
U
U
R/W
R/W
R/W
R/W
R/W
R/W
Address
Program Memory 0001H
Note: U = Unchanged by Reset. R/W = Read/Write.
2
1
Reserved
U
U
R/W
R/W
0
U
R/W
Bit
[7]
VBO_RES
[6:5]
Description
Voltage Brown-Out reset
1 = VBO detection causes a system reset. This setting is the default setting for unpro-
grammed (erased) Flash.
Reserved
These bits are reserved and must be programmed to 11.
PS025113-1212
Flash Option Bit Address Space