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H8SX/1663R Datasheet(PDF) 865 Page - Renesas Technology Corp

Part # H8SX/1663R
Description  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
PDF  1504 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8SX/1663R Datasheet(HTML) 865 Page - Renesas Technology Corp

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Section 16 8-Bit Timers (TMR)
Rev. 2.00 Sep. 24, 2008 Page 833 of 1468
REJ09B0412-0200
16.5
Operation Timing
16.5.1
TCNT Count Timing
Figure 16.7 shows the TCNT count timing for internal clock input. Figure 16.8 shows the TCNT
count timing for external clock input. Note that the external clock pulse width must be at least 1.5
states for increment at a single edge, and at least 2.5 states for increment at both edges. The
counter will not increment correctly if the pulse width is less than these values.
P
φ
Internal clock
TCNT input
clock
TCNT
N – 1
N
N + 1
Figure 16.7 Count Timing for Internal Clock Input
P
φ
External clock
input pin
TCNT input
clock
TCNT
N – 1
N
N + 1
Figure 16.8 Count Timing for External Clock Input



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