EZ80F91MCU Datasheet, PDF (138/396 Pages) Zilog, Inc. – eZ80Acclaim-TM Flash Microcontrollers

eZ80F91 MCU
Product Specification
119
Flash Row Select Register
The Flash Row Select Register is a 3-bit value used to define one of the 8 rows of
Flash on a single page. This register is used for all I/O access to Flash memory. In
addition, 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 43.
Table 43. Flash Row Select Register
(FLASH_ROW = 00FDh)
Bit
7
6
5
4
3
2
1
0
Reset
X
X
X
X
X
0
0
0
CPU Access
R
R
R
R
R R/W R/W R/W
Note: R/W = Read/Write, R = Read Only.
Bit
Position
Value Description
[7:3]
00h Reserved.
[2:0]
FLASH_ROW
0h–7h
Row address of Flash memory to be used during an I/O access
of Flash memory. When INFO_EN is 1 in the Flash Page
Select Register, values for this field are restricted to 0h–1h,
which selects between the two rows in the information page.
PS019209-0504
PRELIMINARY
Flash Memory