H838532H datasheet(113/508 Pages) RENESAS

Numer części	H838532H

Szczegółowy opis	16-Bit Single-Chip Microcomputer H8 Family / H8/300H Super Low Power Series

PDF	508 Pages

Scroll/Zoom	100%

Producent	RENESAS [Renesas Technology Corp]

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Section 4 Clock Pulse Generators

Rev. 1.00 May 30, 2008 Page 93 of 484

REJ09B0436-0100

(1) Negative Resistance Measuring Circuit

(2) Oscillator Circuit Modification Suggestion 1

(3) Oscillator Circuit Modification Suggestion 2

(4) Oscillator Circuit Modification Suggestion 3

OSC1

OSC2

Negative resistance,

addition of

−R

OSC1

OSC2

Modification

point

Modification

point

Modification

point

OSC1

OSC2

OSC1

OSC2

Figure 4.11 Negative Resistance Measurement and Circuit Modification Suggestions

4.5.1

Definition of Oscillation Stabilization Wait Time

Figure 4.12 shows the oscillation waveform (OSC

2), system clock (φ), and microcomputer

operating mode when a transition is made from standby mode, watch mode, or subactive mode, to

active (high-speed/medium-speed) mode, with an oscillator element connected to the system clock

oscillator.

As shown in figure 4.12, as the system clock oscillator is halted in standby mode, watch mode,

and subactive mode, when a transition is made to active (high-speed/medium-speed) mode, the

sum of the following two times (oscillation stabilization time and wait time) is required.

H838532H Arkusz danych(PDF) 113 Page - Renesas Technology Corp