参数资料
型号: MCF54418CMJ250
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: MICROPROCESSOR, PBGA256
封装: 12 X 12 MM, ROHS COMPLAINT, MAPBGA-256
文件页数: 20/60页
文件大小: 1107K
代理商: MCF54418CMJ250
Electrical characteristics
MCF5441x ColdFire Microprocessor Data Sheet, Rev. 6
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
27
Figure 9. Typical crystal circuit
4.9
Reset timing specifications
Table 15 lists specifications for the reset timing parameters shown in Figure 10.
Table 15. Reset and configuration override timing
Num
Characteristic
Min
Max
Unit
R11
1 RESET and configuration override data lines are synchronized internally. Setup and hold times must be met only if
recognition on a particular clock is required.
RESET valid to FB_CLK (setup)
9
ns
R2
FB_CLK to RESET invalid (hold)
1.5
ns
R3
RESET valid time2
2 During low power STOP, the synchronizers for the RESET input are bypassed and RESET is asserted asynchronously
to the system. Thus, RESET must be held a minimum of 100 ns.
5
FB_CLK cycles
R4
FB_CLK to RSTOUT valid
10
ns
R5
RSTOUT valid to Configuration Override inputs valid
0
ns
R6
Configuration Override inputs valid to RSTOUT invalid (setup)
20
FB_CLK cycles
R7
Configuration Override inputs invalid after RSTOUT invalid (hold)
0
ns
R8
RSTOUT invalid to Configuration Override inputs High Impedance
1
FB_CLK cycles
R9
Minimum RSTOUT pulse width
512
FB_CLK cycles
XOSC
EXTAL
XTAL
Crystal or Resonator
RS
C2
RF
C1
CL
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