參數(shù)資料
型號: MPC870CZT66
廠商: Freescale Semiconductor
文件頁數(shù): 42/84頁
文件大小: 0K
描述: IC MPU POWERQUICC 66MHZ 256PBGA
標準包裝: 60
系列: MPC8xx
處理器類型: 32-位 MPC8xx PowerQUICC
速度: 66MHz
電壓: 3.3V
安裝類型: 表面貼裝
封裝/外殼: 256-BGA
供應(yīng)商設(shè)備封裝: 256-PBGA(23x23)
包裝: 托盤
MPC875/MPC870 PowerQUICC Hardware Specifications, Rev. 4
Freescale Semiconductor
47
CPM Electrical Characteristics
13 CPM Electrical Characteristics
This section provides the AC and DC electrical specifications for the communications processor module
(CPM) of the MPC875/MPC870.
13.1
Port C Interrupt AC Electrical Specifications
Table 17 provides the timings for Port C interrupts.
Figure 41 shows the Port C interrupt detection timing.
Figure 41. Port C Interrupt Detection Timing
13.2
IDMA Controller AC Electrical Specifications
Table 18 provides the IDMA controller timings as shown in Figure 42 through Figure 45.
Table 17. Port C Interrupt Timing
Num
Characteristic
33.34 MHz
Unit
Min
Max
35
Port C interrupt pulse width low (edge-triggered mode)
55
ns
36
Port C interrupt minimum time between active edges
55
ns
Table 18. IDMA Controller Timing
Num
Characteristic
All Frequencies
Unit
Min
Max
40
DREQ setup time to clock high
7
ns
41
DREQ hold time from clock high1
1 Applies to high-to-low mode (EDM = 1).
TBD
ns
42
SDACK assertion delay from clock high
12
ns
43
SDACK negation delay from clock low
12
ns
44
SDACK negation delay from TA low
20
ns
45
SDACK negation delay from clock high
15
ns
46
TA assertion to rising edge of the clock setup time (applies to external TA)7
ns
Port C
35
36
(Input)
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