参数资料
型号: MPC880ZP133
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 133 MHz, RISC PROCESSOR, PBGA357
封装: PLASTIC, BGA-357
文件页数: 30/87页
文件大小: 1046K
代理商: MPC880ZP133
MPC885/MPC880 PowerQUICC Hardware Specifications, Rev. 7
36
Freescale Semiconductor
Bus Signal Timing
Table 10 provides the interrupt timing for the MPC885/MPC880.
Figure 26 provides the interrupt detection timing for the external level-sensitive lines.
Figure 26. Interrupt Detection Timing for External Level Sensitive Lines
Figure 27 provides the interrupt detection timing for the external edge-sensitive lines.
Figure 27. Interrupt Detection Timing for External Edge Sensitive Lines
Table 10. Interrupt Timing
Num
Characteristic1
1 The I39 and I40 timings describe the testing conditions under which the IRQ lines are tested when being defined as level
sensitive. The IRQ lines are synchronized internally and do not have to be asserted or negated with reference to the CLKOUT.
The I41, I42, and I43 timings are specified to allow correct functioning of the IRQ lines detection circuitry and have no direct
relation with the total system interrupt latency that the MPC885/MPC880 is able to support.
All Frequencies
Unit
Min
Max
I39
IRQx valid to CLKOUT rising edge (setup time)
6.00
ns
I40
IRQx hold time after CLKOUT
2.00
ns
I41
IRQx pulse width low
3.00
ns
I42
IRQx pulse width high
3.00
ns
I43
IRQx edge-to-edge time
4
× TCLOCKOUT
CLKOUT
IRQx
I39
I40
CLKOUT
IRQx
I41
I42
I43
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