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SH7021 Datasheet(PDF) 290 Page - Renesas Technology Corp

Part # SH7021
Description  SuperH??RISC engine
PDF  509 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

SH7021 Datasheet(HTML) 290 Page - Renesas Technology Corp

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274 RENESAS
TCLKA
TCLKB
Phase
differential
Phase differential, overlap: 1.5 cycles minimum
Pulse width: 2.5 cycles minimum
Phase
differential
Pulse
width
Pulse
width
Overlap
Overlap
Figure 10.44 Phase Differentials, Overlap and Pulse Width in the Phase Counting Mode
10.4.8
Buffer Mode
In the buffer mode, the buffer operation functions differ depending on whether the general
registers are set to output compare or input capture, the reset-synchronized PWM mode, or
complementary PWM mode. The buffer mode is a function of channels 3 and 4 only. Buffer
operations set this way function as follows.
GR is an Output Compare Register: The value of the buffer registers of a channel is transferred
to the GR when the channel experiences a compare match. This is illustrated in figure 10.45.
BR
GR
Comparator
TCNT
Compare match signal
Figure 10.45 Compare Match Buffer Operation
GR is an Input Capture Register: TCNT values are transferred to GR when input capture occurs
and the value previously stored in GR is transferred to BR. This operation is illustrated in figure
10.46.



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