ez80f91 ZiLOG Semiconductor, ez80f91 Datasheet - Page 117

• Manufacturer Part Number: ez80f91
• Description: Ez80 Acclaimplus!? Connectivity Assp Ez80f91 Assp
• Manufacturer: ZiLOG Semiconductor

PS027001-0707
Table 42. Flash Interrupt Control Register
Flash Page Select Register
The msb of this register is used to select whether I/O Flash access and PAGE ERASE
operations are directed to the 512-byte information page or to the main Flash memory
array, and also whether the information page is included in MASS ERASE operations. The
lower 7 bits are used to select one of the main 128 pages for PAGE ERASE or I/O
operations.
To perform a PAGE ERASE, the software must set the proper page value prior to setting
the page erase bit in the Flash Control Register. In addition, each access to the
Bit
Reset
CPU Access
Note: R/W = Read/Write, R = Read Only. Read resets bits [5] and [3:0].
Bit Position
[7]
DONE_IEN
[6]
ERR_IEN
[5]
DONE
[4]
[3]
WR_VIO
[2]
RP_TMO
[1]
PG_VIO
[0]
MASS_VIO
Note: The lower 32 KB block (00000h to 07FFFh) is called the Boot Block and is protected using
the external WP pin. Attempts to page erase BLK0 or mass erase Flash when WP is asserted
result in failure and signal an erase violation.
Value Description
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
R/W
Flash Erase/Row Program Done Interrupt is disabled.
Flash Erase/Row Program Done Interrupt is enabled.
Error Condition Interrupt is disabled.
Error Condition Interrupt is enabled.
Erase/Row Program Done Flag is not set.
Erase/Row Program Done Flag is set.
Reserved.
The Write Violation Error Flag is not set.
The Write Violation Error Flag is set.
The Row Program Time-Out Error Flag is not set.
The Row Program Time-Out Error Flag is set.
The Page Erase Violation Error Flag is not set.
The Page Erase Violation Error Flag is set.
The Mass Erase Violation Error Flag is not set.
The Mass Erase Violation Error Flag is set.
7
0
R/W
6
0
R
5
0
(FLASH_IRQ = 00FBh)
R
4
0
R
3
0
Product Specification
R
2
0
eZ80F91 ASSP
R
1
0
Flash Memory
R
0
0
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