HD6417011VX20V Renesas Electronics America, HD6417011VX20V Datasheet - Page 52

• Manufacturer Part Number: HD6417011VX20V
• Description: MPU 5V 0K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7010r

Specifications of HD6417011VX20V

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: EBI/EMI, SCI
• Peripherals: POR, PWM
• Number Of I /o: 11
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 7x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

4.1
The clock pulse generator (CPG) supplies clock pulses within the SH7011 and to external devices.
The SH7011’s CPG operates the SH7011 at a frequency equal to the oscillation frequency of the
crystal resonator. The CPG is composed of an oscillator and a duty adjustment circuit (figure 4.1).
There are two ways of generating a clock with the CPG: by connecting a crystal resonator, or by
inputting an external clock.
4.2
Either a crystal resonator or an external clock can be selected as the clock pulse source.
4.2.1
Circuit Configuration: Figure 4.2 shows the method of connecting a crystal resonator. Use the
damping resistance (Rd) shown in table 4.1. An AT-cut parallel-resonance type crystal resonator
with the same frequency as the system clock (CK) should be used. Load capacitors (C
be connected as shown in the figure.
The clock pulses generated by the crystal resonator and internal oscillator are sent to the duty
adjustment circuit. After the duty has been adjusted, the pulses are supplied within the SH7011
chip and to external devices.
XTAL
EXTAL
CK (system
clock)
Overview
Clock Source
Crystal Resonator Connection
Section 4 Clock Pulse Generator (CPG)
Oscillator
Figure 4.1 CPG Block Diagram
Duty adjustment
circuit
CPG
L1
Internal
clock ( )
, C
L2
) must
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