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6 usage note, 7 timing chart, 1 clock timing – Renesas H8S/2111B User Manual

Page 563

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Rev. 1.00, 05/04, page 529 of 544

22.6 Usage

Note

The method of connecting an external capacitor is shown in figure 22.4. Connect the system
power supply to the VCL pin together with the VCC pins.

VCL

VSS

0.01 µF

10 µF

Bypass
capacitor

Vcc power supply

< Vcc = 3.0 V to 3.6 V >
Connect the Vcc power supply to the chip's VCL pin in the same way as
the VCC pins.
It is recommended that a bypass capacitor be connected to the power
supply pins. (Values are reference values.)

Figure 22.4 Connection of VCL Capacitor

22.7 Timing

Chart

22.7.1 Clock

Timing

The clock timings are shown below.

t

CH

t

cyc

t

Cf

t

CL

t

Cr

φ

Figure 22.5 System Clock Timing

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