MC9S12T64 Datasheet, PDF (232/608 Pages) Motorola, Inc – Specification

Freescale Semiconductor, Inc.
Flash EEPROM 64K
Interrupts
General
Description of
Interrupt
Operation
This module can generate an interrupt when all commands are
completed or the address, data and command buffers are empty.
Table 46 Flash Interrupt Sources
Interrupt Source
Flash Address, Data
and Command Buffers
empty
All Commands are
completed
Interrupt Flag
CBEIF
Flash Block 0 or 1
CCIF
Flash Block 0 or 1
Local Enable
Global (CCR)
Mask
CBEIE
I Bit
CCIE
I Bit
Figure 30 shows the logic used for generating interrupt via the relevant
block.
This system uses the CBEIF and CCIF flags in combination with the
enable bits CBIE and CCIE in addition to the BKSEL bit, to discriminate
for the interrupt generation. By taking account of the possible selected
bank, the system is prevented from generating false interrupts when the
command buffer is empty in an unselected bank.
block0 CBEIF
Block0 select
block1 CBEIF
Block1 select
block0 CCIF
Block0 select
block1 CCIF
Block1 select
CBEIE
CCIE
Flash
Interrupt
Request
Figure 30 Flash Interrupt Implementation.
MC9S12T64Revision 1.1.1
Flash EEPROM 64K
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