h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 389
h8s-2138
Manufacturer Part Number
h8s-2138
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2138.pdf
(1061 pages)
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12.6
Application programmers should note that the following kinds of contention can occur in the 8-bit
timer module.
12.6.1
If a timer counter clock pulse is generated during the T2 state of a TCNT write cycle, the clear
takes priority, so that the counter is cleared and the write is not performed. Figure 12.13 shows
this operation.
Address
Internal write signal
Counter clear signal
TCNT
Usage Notes
Contention between TCNT Write and Clear
Figure 12.13 Contention between TCNT Write and Clear
TCNT write cycle by CPU
T
1
N
TCNT address
Rev. 4.00 Jun 06, 2006 page 335 of 1004
T
2
Section 12 8-Bit Timers
H'00
REJ09B0301-0400
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