參數(shù)資料
型號: SPC5200CBV466B
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 466 MHz, MICROPROCESSOR, PBGA272
封裝: 27 X 27 MM, 1.27 MM PITCH, HALIDE FREE, PLASTIC, BGA-272
文件頁數(shù): 10/80頁
文件大?。?/td> 788K
代理商: SPC5200CBV466B
MPC5200B Data Sheet, Rev. 0.6
Electrical and Thermal Characteristics
Freescale Semiconductor
18
NOTE
Beware of changing the values on the pins of the reset configuration word
after the deassertion of PORRESET. This may cause problems because it
may change the internal clock ratios and so extend the PLL locking process.
3.3.4
External Interrupts
The MPC5200B provides three different kinds of external interrupts:
Four IRQ interrupts
Eight GPIO interrupts with simple interrupt capability (not available in power-down mode)
Eight WakeUp interrupts (special GPIO pins)
The propagation of these three kinds of interrupts to the core is shown in the following graphic:
Figure 4. External Interrupt Scheme
Due to synchronization, prioritization, and mapping of external interrupt sources, the propagation of
external interrupts to the core processor is delayed by several IP_CLK clock cycles. The following table
specifies the interrupt latencies in IP_CLK cycles. The IP_CLK frequency is programmable in the Clock
Distribution Module (see Note Table 16).
Table 16. External Interrupt Latencies
Interrupt Type
Pin Name
Clock Cycles
Reference Clock
Core Interrupt
SpecID
Interrupt Requests
IRQ0
10
IP_CLK
critical (cint)
A4.1
IRQ0
10
IP_CLK
normal (int)
A4.2
IRQ1
10
IP_CLK
normal (int)
A4.3
IRQ2
10
IP_CLK
normal (int)
A4.4
IRQ3
10
IP_CLK
normal (int)
A4.5
8 GPIOs
GPIO WakeUp
GPIO Std
IRQ0
IRQ1
IRQ2
IRQ3
PIs
cint
int
Grouper
Encoder
Main Interrupt
Controller
CORE_CINT
CORE_INT
e300
Core
Notes:
1. PIs = Programmable Inputs
2. Grouper and Encoder functions imply programmability in software
8
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