MC9S12E32CFU FREESCALE [Freescale Semiconductor, Inc], MC9S12E32CFU Datasheet - Page 118

• Manufacturer Part Number: MC9S12E32CFU
• Description: HCS12 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Chapter 2 128 Kbyte Flash Module (FTS128K1V1)
2.4.4
On each reset, the Flash module executes a reset sequence to hold CPU activity while loading the following
registers from the Flash array memory according to
2.4.4.1
If a reset occurs while any Flash command is in progress, that command will be immediately aborted. The
state of the word being programmed or the sector/array being erased is not guaranteed.
2.4.5
The Flash module can generate an interrupt when all Flash commands have completed execution or the
Flash address, data, and command buffers are empty.
2.4.5.1
Figure 2-26
The Flash module uses the CBEIF and CCIF flags in combination with the enable bits CBIE and CCIE to
discriminate for the generation of interrupts.
For a detailed description of these register bits, refer to
(FCNFG)”
118
•
•
FPROT — Flash Protection Register (see
FSEC — Flash Security Register (see
Flash Address, Data, and Command
Buffers are empty
All Flash commands have completed
execution
and
Flash Reset Sequence
Interrupts
shows the logic used for generating interrupts.
Reset While Flash Command Active
Description of Interrupt Operation
Vector addresses and their relative interrupt priority are determined at the
MCU level.
Section 2.3.2.6, “Flash Status Register
Interrupt Source
CBEIE
CBEIF
CCIE
CCIF
Figure 2-26. Flash Interrupt Implementation
Table 2-17. Flash Interrupt Sources
MC9S12E128 Data Sheet, Rev. 1.07
Section
(FSTAT register)
(FSTAT register)
Interrupt Flag
NOTE
Section
CBEIF
CCIF
Table
2.3.2.2)
(FSTAT)”.
Section 2.3.2.4, “Flash Configuration Register
FLASH INTERRUPT REQUEST
2.3.2.5)
2-1:
Local Enable
CBEIE
CCIE
Global (CCR) Mask
Freescale Semiconductor
I Bit
I Bit