(PDF) PCA84C646P Datasheet - Microcontrollers for TV tuning control and OSD applications

Número de pieza	PCA84C646P
Descripción	Microcontrollers for TV tuning control and OSD applications
Fabricantes	NXP Semiconductors
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No Preview Available ! INTEGRATED CIRCUITS DATA SHEET PCA84C646; PCA84C846 Microcontrollers for TV tuning control and OSD applications Preliminary speciﬁcation Supersedes data of June 1994 File under Integrated Circuits, IC14 1995 Jun 15 1 page Philips Semiconductors Microcontrollers for TV tuning control and OSD applications 4 BLOCK DIAGRAM Preliminary speciﬁcation PCA84C646; PCA84C846 1995 Jun 15 5 5 Page Philips Semiconductors Microcontrollers for TV tuning control and OSD applications Preliminary speciﬁcation PCA84C646; PCA84C846 Internal data bus ‘MOVE instruction’ MSB DAC INTERFACE 7-BIT DATA LATCH (VSTH) LSB DAC INTERFACE 7-BIT DATA LATCH (VSTL) ‘MOV instruction’ DATA LOAD TIMING PULSE PWM output polarity control bit 77 LOAD (1) 14-BIT DATA LATCH (VSTREG) 77 COARSE 7-BIT PWM OUT1 FINE ADDITIONAL PULSE GENERATOR OUT2 ADD QQ P14LVL Q14 to 8 14-BIT COUNTER Q7 to 1 MED179 TDAC output f TDAC = fxtal 3 (1) See Fig.7 for timing. Fig.6 Block diagram of the 14-bit PWM DAC. 1995 Jun 15 11 11 Page

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