参数资料
型号: MPC855TZQ80D4
厂商: Freescale Semiconductor
文件页数: 27/78页
文件大小: 0K
描述: IC MPU POWERQUICC 80MHZ 357PBGA
标准包装: 44
系列: MPC8xx
处理器类型: 32-位 MPC8xx PowerQUICC
速度: 80MHz
电压: 3.3V
安装类型: 表面贴装
封装/外壳: 357-BBGA
供应商设备封装: 357-PBGA(25x25)
包装: 托盘
MPC860 PowerQUICC Family Hardware Specifications, Rev. 9
Freescale Semiconductor
33
Bus Signal Timing
Table 8 provides interrupt timing for the MPC860.
Figure 23 provides the interrupt detection timing for the external level-sensitive lines.
Figure 23. Interrupt Detection Timing for External Level Sensitive Lines
Figure 24 provides the interrupt detection timing for the external edge-sensitive lines.
Figure 24. Interrupt Detection Timing for External Edge Sensitive Lines
Table 8. Interrupt Timing
Num
Characteristic1
1 The timings I39 and I40 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 timings I41, I42, and I43 are specified to allow the correct function of the IRQ lines detection circuitry and have no direct
relation with the total system interrupt latency that the MPC860 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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