HD6417144 RENESAS [Renesas Technology Corp], HD6417144 Datasheet - Page 419
HD6417144
Manufacturer Part Number
HD6417144
Description
32-Bit RISC Microcomputer SuperHTM RISC engine Family/SH7144 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417144.pdf
(930 pages)
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Note:
11.9.4
Input Level Detection Operation:
If the input conditions set by the ICSR1 occur on any of the POE pins, all high-current pins
become high-impedance state. Note however, that these high-current pins become high-impedance
state only when general input/output function or MTU function is selected in these pins.
1. Falling Edge Detection
2. Low-Level Detection
Bit
8
7 to 0 ⎯
When a change from high to low level is input to the POE pins.
Figure 11.115 shows the low-level detection operation. Sixteen continuous low levels are
sampled with the sampling clock established by the ICSR1. If even one high level is detected
during this interval, the low level is not accepted.
Sampling starts when detecting the falling edge of the POE pin. Thereby, negate the POE pin
when using POE function after sampling.
Furthermore, the timing when the large-current pins enter the high-impedance state from the
sampling clock is the same in both falling-edge detection and in low-level detection.
Bit Name
OIE
*
Operation
Only 0 can be written to write the flag.
Initial value
0
All 0
R/W
R
R/W
Description
Output Short Interrupt Enable
This bit makes interrupt requests when the OSF bit
of the OCSR is set.
00: Interrupt requests disabled
01: Interrupt request enabled
Reserved
These bits are always read as 0. The write value
should always be 0.
11.
Rev.4.00 Mar. 27, 2008 Page 375 of 882
Multi-Function Timer Pulse Unit (MTU)
REJ09B0108-0400
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