Z8F0830HH020SG Datasheet, PDF (138/257 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore!^® F0830 Series
Product Specification
120
Flash Status Register
The Flash Status Register indicates the current state of the Flash Controller. This register
can be read at any time. The read-only Flash Status Register shares its register file address
with the write-only Flash Control Register.
Table 73. Flash Status Register (FSTAT)
Bit
7
6
5
4
3
2
1
0
Field
Reserved
FSTAT
RESET
0
0
0
0
0
0
0
0
R/W
R
R
R
R
R
R
R
R
Address
FF8H
Bit
[7:6]
[5:0]
FSTAT
Description
Reserved
These bits are reserved and must be programmed to 00.
Flash Controller Status
000000 = Flash Controller locked.
000001 = First unlock command received (73H written).
000010 = Second unlock command received (8CH written).
000011 = Flash Controller unlocked.
000100 = Sector protect register selected.
001xxx = Program operation in progress.
010xxx = Page Erase operation in progress.
100xxx = Mass Erase operation in progress.
PS025113-1212
Flash Control Register Definitions