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HD64F7047 Datasheet(PDF) 91 Page - Renesas Technology Corp

Part # HD64F7047
Description  Renesas 32-Bit RISC Microcomputer SuperHTMRISC engine Family/SH7000 Series
PDF  764 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD64F7047 Datasheet(HTML) 91 Page - Renesas Technology Corp

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Rev. 2.00, 09/04, page 51 of 720
Section 4 Clock Pulse Generator
This LSI has an on-chip clock pulse generator (CPG) that generates the system clock (
φ) and
peripheral clock (P
φ) to generate the internal clock (φ/2 to φ/8192, Pφ/2 to Pφ/1024). The CPG
consists of an oscillator, PLL circuit, and pre-scaler. A block diagram of the clock pulse generator
is shown in figure 4.1. The frequency from the oscillator can be modified by the PLL circuit.
PLLCAP
EXTAL
XTAL
MD2
MD3
CK
Pre-scaler
Pre-scaler
Oscillator
PLL circuit
Clock divider
(
× 1/2)
Clock mode
control circuit
Within the LSI
φ/2 to
φ/8192
φ/2
(HCAN2)
P
φ
φ
P
φ/2 to
P
φ/1024
Figure 4.1 Block Diagram of the Clock Pulse Generator



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