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PD70F3555 Scheda tecnica(PDF) 27 Page - Renesas Technology Corp

Il numero della parte PD70F3555
Spiegazioni elettronici  32-bit Single-Chip Microcontroller
PDF  88 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

PD70F3555 Scheda tecnica(HTML) 27 Page - Renesas Technology Corp

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R01DS0141ED0100
Data Sheet
Chapter 4
Clock generators
Chapter 4 Clock generators
4.1 CPU clock
Table 4-1
CPU clock frequency
4.2 Peripheral clock
Table 4-2
Peripheral clock frequency
4.3 Oscillator characteristics
4.3.1
Main oscillator
A ceramic or crystal resonator can be connected to the main clock input pins
as shown in figure 4-1 “Recommended Main Oscillator Circuit”
.
Figure 4-1
Recommended Main Oscillator Circuit
Caution
Values of C1, C2 and Rd and the best setting for MOSCC.AMPSEL[1:0]
register depend on the used ceramic or crystal resonator and must be
specified in cooperation with ceramic or crystal resonator manufacturer.
Parameter
Symbol
Condition
Ratings
Unit
Min
Typ
Max
CPU clock frequency
fCPU
PLL based
-
-
80
MHz
SSCG based
-
-
88.32
MHz
Parameter
Symbol
Condition
Ratings
Unit
Min
Typ
Max
Peripheral clock
frequency
fPERI
-
-
48a
a)
Some peripherals can be operated at 80MHz. Refer to the chapter ‘Clock Selection’ in the UM for
details.
MHz
X1
X2
C
1
C
2
Rd
internal
external



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