EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 135

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

PS019209-0504
Flash Interrupt Control Register
There are two sources of interrupts from the Flash controller. These two sources
are:
•
•
Either or both of these two interrupt sources can be enabled by setting the appro-
priate bits in the Flash Interrupt Control register.
The Flash Interrupt Control register contains four status bits to indicate the follow-
ing error conditions:
Row Program Time-Out.
the current row program operation does not complete within 4864 Flash controller
clocks, the Flash controller terminates the row program operation by clearing bit 2
of the Flash Program Control Register and setting the RP_TM0 error bit to 1.
Write Violation.
memory (the Write was not performed).
Page Erase Violation.
Flash memory (the requested page was not erased).
Mass Erase Violation.
are one or more protected blocks in Flash memory (the MASS ERASE was not
performed).
Bit
Position
[3]
BLK3_PROT
[2]
BLK2_PROT
[1]
BLK1_PROT
[0]
BLK0_PROT
Note: The lower 32 KB block (00000h to 07FFFh—BLK0) is called the Boot Block and can be
Page Erase, Mass Erase, or Row Program completed successfully.
An error condition occurred
protected using the external WP pin.
This bit indicates an attempt to write to a protected block of Flash
Value Description
0
1
0
1
0
1
0
1
This bit indicates an attempt to erase a protected block of
This bit indicates an attempt to MASS ERASE when there
Disable Write/Erase Protect on block 18000h to 1FFFFh.
Enable Write/Erase Protect on block 18000h to 1FFFFh.
Disable Write/Erase Protect on block 10000h to 17FFFh.
Enable Write/Erase Protect on block 10000h to 17FFFh.
Disable Write/Erase Protect on block 08000h to 0FFFFh.
Enable Write/Erase Protect on block 08000h to 0FFFFh.
Disable Write/Erase Protect on block 00000h to 07FFFh.
Enable Write/Erase Protect on block 00000h to 07FFFh.
This bit signals a time-out during Row Programming. If
P R E L I M I N A R Y
Product Specification
eZ80F91 MCU
Flash Memory
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