h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 342
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h8s-2649
Manufacturer Part Number
h8s-2649
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2649.pdf
(766 pages)
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Section 10 16-Bit Timer Pulse Unit (TPU)
10.9
10.9.1
TPU operation can be disabled or enabled using the module stop control register. The initial
setting is for TPU operation to be halted. Register access is enabled by clearing module stop
mode. For details, refer to section 21, Power-Down Modes.
10.9.2
The input clock pulse width must be at least 1.5 states in the case of single-edge detection, and at
least 2.5 states in the case of both-edge detection. The TPU will not operate properly at narrower
pulse widths.
In phase counting mode, the phase difference and overlap between the two input clocks must be at
least 1.5 states, and the pulse width must be at least 2.5 states. Figure 10.44 shows the input clock
conditions in phase counting mode.
Rev. 2.00 Dec. 05, 2005 Page 304 of 724
REJ09B0200-0200
Figure 10.44 Phase Difference, Overlap, and Pulse Width in Phase Counting Mode
TCLKA
(TCLKC)
TCLKB
(TCLKD)
Notes: Phase difference and overlap
Usage Notes
Module Stop Mode Setting
Input Clock Restrictions
Pulse width
Overlap
Pulse width
Phase
differ-
ence
Overlap
: 1.5 states or more
: 2.5 states or more
Phase
differ-
ence
Pulse width
Pulse width
Pulse width
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