tmp89ch42 TOSHIBA Semiconductor CORPORATION, tmp89ch42 Datasheet - Page 83

• Manufacturer Part Number: tmp89ch42
• Description: 8 Bit Microcontroller Tlcs-870/c1 Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA000
4.3.4.2
4.3.4.3
Signal that has passed through
(detected at the falling edge)
(detected at the rising edge)
(detected at both edges)
be read by using EINTCR4<INT4LVL>. When both edges are selected as detection edges, the edge where
an interrupt is generated can be detected by reading EINTCR4<INT4LVL>.
interval selected at EINTCRx<INT4NC>. If the same level is detected three consecutive times, the signal is
recognized as a signal. If not, the signal is removed as noise.
Interrupt request signal
Interrupt request signal
Interrupt request signal
Interrupt request signal
Figure 4-6 Interrupt Request Generation and EINTCR4<INT4LVL>
The level of a signal that has passed through the noise canceller when an interrupt request is generated can
In NORMAL1/2 or IDLE1/2 mode, a signal that has been sampled by fcgck is sampled at the sampling
A noise canceller pass signal monitoring function when interrupt request signals are generated
Noise cancel time selection function
the noise canceller
(level detection)
INT4 pin
INT4LVL
INT4LVL
INT4LVL
INT4LVL
Table 4-5 Noise Canceller Sampling Lock
EINTCR4<INT4NC>
00
01
10
11
Page 69
Sampling interval
fcgck/2
fcgck/2
fcgck/2
fcgck
2
3
4
TMP89CH42