Z8FMC16100 Datasheet, PDF (240/402 Pages) Zilog, Inc. – Z8 Encore-R Motor Control Flash MCUs

Z8 Encore!^® Motor Control Flash MCUs
Product Specification
218
Flash Status Register
The Flash Status Register, shown in Table 117, indicates the current state of the Flash Con-
troller. 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 117. Flash Status Register (FSTAT)
BITS
7
6
5
4
3
2
1
0
FIELD
Reserved
FSTAT
RESET
00B
00_0000B
R/W
R
R
ADDR
FF8H
Bit
Position
[7:6]
Reserved
[5:0]
FSTAT
Value Description
Must be 00.
00_0000
00_0001
00_0010
00_0011
00_0100
00_1xxx
01_0xxx
10_0xxx
Flash Controller Status
Flash Controller locked.
First unlock command received.
Second unlock command received.
Flash Controller unlocked.
Flash Sector Protect register selected.
Program operation in progress.
Page erase operation in progress.
Mass erase operation in progress.
Flash Page Select Register
The Flash Page Select (FPS) Register, shown in Table 118, selects one of the 32 available
Flash memory pages to be erased or programmed. Each Flash Page contains 512 bytes of
Flash memory. During a Page Erase operation, all Flash memory locations with the 7 most
significant bits of the address assigned by the PAGE field are erased to FFh.
The Flash Page Select Register shares its Register File address with the Flash Sector Pro-
tect Register. The Flash Page Select Register cannot be accessed when the Flash Sector
Protect Register is enabled.
Program Memory
PRELIMINARY
PS024604-1005