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H8/3021 Datasheet(PDF) 297 Page - Renesas Technology Corp

Part # H8/3021
Description  16-Bit Single-Chip Microcomputer
PDF  712 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8/3021 Datasheet(HTML) 297 Page - Renesas Technology Corp

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8. 16-Bit Integrated Timer Unit (ITU)
Rev.2.00 Mar. 22, 2007 Page 273 of 684
REJ09B0352-0200
Contention between TCNT Byte Write and Increment: If an increment pulse occurs in the T
2
or T
3 state of a TCNT byte write cycle, writing takes priority and TCNT is not incremented. The
TCNT byte that was not written retains its previous value. See figure 8.63, which shows an
increment pulse occurring in the T
2 state of a byte write to TCNTH.
φ
Address
Internal write signal
TCNT input clock
TCNTH
TCNTL
TCNT byte write cycle
T1
T2
T3
N
TCNTH address
M
TCNT write data
XX
X + 1
Figure 8.63 Contention between TCNT Byte Write and Increment



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