參數(shù)資料
型號(hào): MCF54455VR266
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 266 MHz, RISC PROCESSOR, PBGA360
封裝: 23 X 23 MM, ROHS COMPLIANT, TEPBGA-360
文件頁數(shù): 35/48頁
文件大小: 945K
代理商: MCF54455VR266
MCF5445x ColdFire Microprocessor Data Sheet, Rev. 6
Electrical Characteristics
Freescale Semiconductor
40
5.19
JTAG and Boundary Scan Timing
Figure 27. Test Clock Input Timing
Table 29. JTAG and Boundary Scan Timing
Num
Characteristics1
1 JTAG_EN is expected to be a static signal. Hence, specific timing is not associated with it.
Min
Max
Unit
J1
TCLK Frequency of Operation
DC
20
MHz
J2
TCLK Cycle Period
50
ns
J3
TCLK Clock Pulse Width
20
30
ns
J4
TCLK Rise and Fall Times
3
ns
J5
Boundary Scan Input Data Setup Time to TCLK Rise
5
ns
J6
Boundary Scan Input Data Hold Time after TCLK Rise
20
ns
J7
TCLK Low to Boundary Scan Output Data Valid
33
ns
J8
TCLK Low to Boundary Scan Output High Z
33
ns
J9
TMS, TDI Input Data Setup Time to TCLK Rise
4
ns
J10
TMS, TDI Input Data Hold Time after TCLK Rise
10
ns
J11
TCLK Low to TDO Data Valid
11
ns
J12
TCLK Low to TDO High Z
11
ns
J13
TRST Assert Time
50
ns
J14
TRST Setup Time (Negation) to TCLK High
10
ns
TCLK
VIL
VIH
J4
(input)
J2
J3
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