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HC05 Datasheet(PDF) 128 Page - Motorola, Inc

Part # HC05
Description  High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit
PDF  232 Pages
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Manufacturer  MOTOROLA [Motorola, Inc]
Direct Link  http://www.freescale.com
Logo MOTOROLA - Motorola, Inc

HC05 Datasheet(HTML) 128 Page - Motorola, Inc

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MOTOROLA
8-4
MC68HC05X16
Rev. 1
PULSE LENGTH D/A CONVERTERS
8
8.2
PLM clock selection
The slow/fast mode of the PLM D/A converters is selected by bits 1, 2, and 3 of the miscellaneous
register at address $000C (SFA bit for PLMA and SFB bit for PLMB). The slow/fast mode has no
effect on the D/A converters’ 8-bit resolution (see Figure 8-3).
8.3
PLM during STOP mode
On entering STOP mode, the PLM outputs remain at their particular level. When STOP mode is
exited by an interrupt, the PLM systems resume regular operation. If STOP mode is exited by
power-on or external reset the registers values are forced to $00.
8.4
PLM during WAIT mode
The PLM system is not affected by WAIT mode and continues normal operation.
Figure 8-3 PLM clock selection
fOSC
÷2
÷32
SM bit = 0
SM bit = 1
÷4
x4096
x256
SF bit = 1
SF bit = 0
Timer
clock
PLM
clock
Bus
frequency (fOP)
126



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