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MPC5645B Datasheet(PDF) 96 Page - Freescale Semiconductor, Inc

No. de pieza MPC5645B
Descripción Electrónicos  Microcontroller 64 KB on-chip data flash memory to support EEPROM emulation
PDF  114 Pages
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Fabricante Electrónico  FREESCALE [Freescale Semiconductor, Inc]
Página de inicio  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC5645B Datasheet(HTML) 96 Page - Freescale Semiconductor, Inc

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MPC5646C Microcontroller Data Sheet, Rev. 3
Preliminary—Subject to Change Without Notice
Freescale Semiconductor
96
Figure 33. DSPI PCS strobe (PCSS) timing
4.19.3
Nexus characteristics
Table 50. Nexus debug port timing1
1 JTAG specifications in this table apply when used for debug functionality. All Nexus timing relative to MCKO is
measured from 50% of MCKO and 50% of the respective signal. Nexus timing specified at VDDE =4.0–5.5 V,
TA =TL to TH, and CL = 30 pF with SRC = 0b11.
Spec
Characteristic
Symbol
Min
Max
Unit
1
MCKO Cycle
Time2
2 MCKO can run up to 1/2 of full system frequency. It can also run at system frequency when it is <60 MHz.
tMCYC
16.3
—
ns
2
MCKO Duty Cycle
tMDC
40
60
%
3
MCKO Low to
MDO, MSEO,
EVTO Data Valid3
3 MDO, MSEO, and EVTO data is held valid until next MCKO low cycle.
tMDOV
–0.1
0.25
tMCYC
4
EVTI Pulse Width
tEVTIPW
4.0
—
tTCYC
5
EVTO Pulse
Width
tEVTOPW
1tMCYC
6
TCK Cycle Time4
4 The system clock frequency needs to be three times faster than the TCK frequency.
tTCYC
40
—
ns
7
TCK Duty Cycle
tTDC
40
60
%
8
TDI, TMS Data
Setup Time
tNTDIS, tNTMSS
8—
ns
9
TDI, TMS Data
Hold Time
tNTDIH, tNTMSH
5—
ns
10
TCK Low to TDO
Data Valid
tJOV
025
ns
CSx
7
8
PCSS
Note: Numbers shown reference Table 49.



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