HD404669 Datasheet, PDF(139/142 Page) Hitachi Semiconductor – Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit

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HD404669 Datasheet, PDF (139/142 Pages) Hitachi Semiconductor – Low-Voltage AS Microcomputers with On-Chip DTMF Generation Circuit

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Test point

C = 30 pF

HD404669 Series

VCC

RL = 2.6 kâ¦

R = 12 kâ¦

1S2074 H

or equivalent

Figure 96 Timing Load Circuit

139

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