EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 130

• Manufacturer Part Number: EZ80F91MCU
• Description: eZ80Acclaim-TM Flash Microcontrollers
• Manufacturer: ZILOG [Zilog, Inc.]

PS019209-0504
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.
Bit
Position
[7:0]
FLASH_DATA
Value Description
00h-
FFh
R/W
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).
P R E L I M I N A R Y
X
7
R/W
6
X
R/W
X
5
R/W
X
4
R/W
X
3
Product Specification
R/W
X
2
eZ80F91 MCU
R/W
X
1
Flash Memory
R/W
X
0
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