参数资料
型号: MPC859PCZP100A
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 100 MHz, RISC PROCESSOR, PBGA357
封装: PLASTIC, BGA-357
文件页数: 31/96页
文件大小: 1303K
代理商: MPC859PCZP100A
MPC866/MPC859 Hardware Specifications, Rev. 2
Freescale Semiconductor
37
Bus Signal Timing
Figure 23 shows the timing for the asynchronous external master memory access controlled by the GPCM.
Figure 23. Asynchronous External Master Memory Access Timing (GPCM Controlled—ACS = 00)
Figure 24 shows the timing for the asynchronous external master control signals negation.
Figure 24. Asynchronous External Master—Control Signals Negation Timing
Table 10 shows the interrupt timing for the MPC866/859.
Table 10. Interrupt Timing
Num
Characteristic 1
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 has
no direct relation with the total system interrupt latency that the MPC866/859 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
4xTCLOCKOUT
——
CLKOUT
AS
A[0:31],
TSIZ[0:1],
R/W
CSx
B39
B40
B22
AS
CSx, WE[0:3],
OE, GPLx,
BS[0:3]
B43
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