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EC-1 датащи(PDF) 29 Page - Renesas Technology Corp

номер детали EC-1
подробное описание детали  On-chip 32-bit ARM Cortex-R4F processor
PDF  58 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

EC-1 датащи(HTML) 29 Page - Renesas Technology Corp

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R01DS0289EJ0100 Rev.1.00
Page 29 of 58
Sep 30, 2016
EC-1
2. Electrical Characteristics
2.4.1
Clock Timing
n = 0, 1
Note 1. When using the XTAL clock, ask the oscillator manufacturer to evaluate oscillation of the oscillator. For the oscillation
stabilization time, see the evaluation result provided by the oscillator manufacturer.
Note 2. When using the EtherCAT slave controller, make sure that the clock timing satisfies 25.00 MHz ± 25 ppm.
Table 2.11
CLKOUT25Mn Timing
Output load conditions: VOH = VCCQ33 – 0.5 V, VOL1 = 0.4 V, C = 30 pF
Item
Symbol
min
max
Unit
Test
Conditions
CLKOUT25Mn
(MII)
CLKOUT25Mn cycle time
Tck
40
―
ns
Figure 2.2
CLKOUT25Mn frequency Typ. 25 MHz
――
25 + 50 ppm
MHz
CLKOUT25Mn duty ratio
―
35
65
%
CLKOUT25Mn output low pulse width
Tckl
Tck/2 – Tckf
Tck/2 + Tckf
ns
CLKOUT25Mn output high pulse width
Tckh
Tck/2 – Tckr
Tck/2 + Tckr
ns
CLKOUT25Mn rising/falling time
Tckr2/ckf
0.5
9
ns
n = 0, 1
Figure 2.2
CLKOUT25Mn Pin Output Timing 2
Table 2.12
XTAL Clock Timing
Item
Symbol
min
typ
max
Unit
XTAL clock oscillator output cycle*1
tXTALcyc
40.00 + 50 ppm*2
ns
Figure 2.3
XTAL Clock Oscillator Output Timing
tck
CLKOUT25Mn pin output
tckh
VOH
VOH
VOL1
1/2 × VCCQ33
VOL1
tckl
VOL1
tckr
tckf
1/2 × VCCQ33
tXTALcyc
1/2 × VCCQ33
XTAL clock oscillator output
1/2 × VCCQ33



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