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H8SX1663 Datasheet(PDF) 677 Page - Renesas Technology Corp

Part # H8SX1663
Description  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
PDF  1158 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8SX1663 Datasheet(HTML) 677 Page - Renesas Technology Corp

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Section 12 8-Bit Timers (TMR)
Rev.1.00 Jun. 07, 2006 Page 625 of 1102
REJ09B0294-0100
12.5
Operation Timing
12.5.1
TCNT Count Timing
Figure 12.7 shows the TCNT count timing for internal clock input. Figure 12.8 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 12.7 Count Timing for Internal Clock Input
P
φ
External clock
input pin
TCNT input
clock
TCNT
N – 1
N
N + 1
Figure 12.8 Count Timing for External Clock Input



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