h8s-2172 Renesas Electronics Corporation., h8s-2172 Datasheet - Page 303
h8s-2172
Manufacturer Part Number
h8s-2172
Description
Renesas 16-bit Single-chip Microcomputer H8s Family H8s-2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2172.pdf
(570 pages)
- Current page: 303 of 570
- Download datasheet (5Mb)
9.5
9.5.1
Figure 9.3 shows the count timing for internal clock input. Figure 9.4 shows the count timing for
external clock signal. Note that the external clock pulse width must be at least 1.5 states for
incrementation at a single edge, and at least 2.5 states for incrementation at both edges. The
counter will not increment correctly if the pulse width is less than these values.
φ
Internal clock
Clock input
to TCNT
TCNT
φ
External clock
input pin
Clock input
to TCNT
TCNT
Operation Timing
TCNT Incrementation Timing
Figure 9.4 Count Timing for External Clock Input
Figure 9.3 Count Timing for Internal Clock Input
N–1
N–1
N
N
Rev. 2.00, 03/04, page 271 of 534
N+1
N+1
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