MC56F8147VPYE Freescale Semiconductor, MC56F8147VPYE Datasheet - Page 75

• Manufacturer Part Number: MC56F8147VPYE
• Description: IC DSP 16BIT 40MHZ 160-LQFP
• Manufacturer: Freescale Semiconductor
• Series: 56F8xxxr

Specifications of MC56F8147VPYE

• Core Processor: 56800
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: EBI/EMI, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 76
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Ram Size: 4K x 16
• Voltage - Supply (vcc/vdd): 2.25 V ~ 3.6 V
• Data Converters: A/D 16x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 160-LQFP
• Data Bus Width: 16 bit
• Processor Series: MC56F81xx
• Core: 56800E
• Data Ram Size: 4 KB
• Interface Type: SPI, SCI, CAN
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 76
• Number Of Timers: 2
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 4 x 12 bit, 4 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

5.3.3
Fast interrupts are described in the DSP56800E Reference Manual. The interrupt controller recognizes
fast interrupts before the core does.
A fast interrupt is defined (to the ITCN) by:
When an interrupt occurs, its vector number is compared with the FIM0 and FIM1 register values. If a
match occurs, and it is a level 2 interrupt, the ITCN handles it as a fast interrupt. The ITCN takes the vector
address from the appropriate FIVALn and FIVAHn registers, instead of generating an address that is an
offset from the VBA.
The core then fetches the instruction from the indicated vector adddress and if it is not a JSR, the core starts
its fast interrupt handling.
Freescale Semiconductor
Preliminary
1. Setting the priority of the interrupt as level 2, with the appropriate field in the IPR registers
2. Setting the FIMn register to the appropriate vector number
3. Setting the FIVALn and FIVAHn registers with the address of the code for the fast interrupt
Fast Interrupt Handling
1. See IPIC field definition in
IPIC_LEVEL[1:0]
00
01
01
11
Table 5-2. Interrupt Priority Encoding
1
No Interrupt or SWILP
Priority 0
Priority 1
Priorities 2 or 3
56F8347 Technical Data, Rev.11
Current Interrupt Priority
Part 5.6.30.2
Level
Priorities 0, 1, 2, 3
Priorities 1, 2, 3
Priorities 2, 3
Priority 3
Exception Priority
Required Nested
Functional Description
75