EZ80F91MCU Datasheet, PDF (130/396 Pages) Zilog, Inc. – eZ80Acclaim-TM Flash Microcontrollers

eZ80F91 MCU
Product Specification
111
Flash Data Register
The Flash Data register stores the data values to be programmed into Flash
memory via I/O Write operations. An I/O Read of the Flash Data register returns
data from Flash memory. The Flash memory address used for I/O access is deter-
mined by the contents of the page, row, and column registers. Each access to the
FLASH_DATA register causes an autoincrement of the Flash address stored in
the Flash Address registers (FLASH_PAGE, FLASH_ROW, FLASH_COL). See
Table 35.
Table 35. Flash Data Register
(FLASH_DATA = 00F6h)
Bit
Reset
CPU Access
Note: R/W = Read/Write.
7
X
R/W
6
X
R/W
5
X
R/W
4
X
R/W
3
X
R/W
2
X
R/W
1
X
R/W
0
X
R/W
Bit
Position
[7:0]
FLASH_DATA
Value Description
00h-
FFh
Data value to be written to Flash memory during an I/O Write
operation, or the data value that is read in Flash memory,
indicated by the Flash Address registers (FLASH_PAGE,
FLASH_ROW, FLASH_COL).
PS019209-0504
PRELIMINARY
Flash Memory