mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 118

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 2 256 Kbyte Flash Module (FTS256K2V1)
2.8
The Flash module can generate an interrupt when all Flash command operations have completed, when
the Flash address, data, and command buffers are empty.
2.8.1
The logic used for generating interrupts is shown in
The Flash module uses the CBEIF and CCIF flags in combination with the CBIE and CCIE enable bits to
generate the Flash command interrupt request.
For a detailed description of the register bits, refer to
(FCNFG)”
118
Flash address, data and command buffers empty
All Flash commands completed
Interrupts
and
Description of Flash Interrupt Operation
Block 0 CBEIF
Block 1 CBEIF
Block 0 Select
Block 1 Select
Block 0 Select
Block 1 Select
Block 0 CCIF
Block 1 CCIF
Interrupt Source
Vector addresses and their relative interrupt priority are determined at the
MCU level.
Section 2.3.2.7, “Flash Status Register
Figure 2-29. Flash Interrupt Implementation
Table 2-21. Flash Interrupt Sources
MC9S12E256 Data Sheet, Rev. 1.08
CBEIE
CBEIF (FSTAT register) CBEIE (FCNFG register)
CCIE
CCIF (FSTAT register)
Interrupt Flag
NOTE
Figure
Section 2.3.2.4, “Flash Configuration Register
(FSTAT)”.
2-29.
CCIE (FCNFG register)
Local Enable
Flash Command
Interrupt Request
Freescale Semiconductor
Global (CCR) Mask
I Bit
I Bit