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TMP89FM42
RA000
Note: The contents of EINTCRx<INTxLVL> are updated each time an interrupt request signal is generated.
Figure 4-4 Interrupt Request Generation and EINTCRx<INTxLVL>
4.3.3.3
Noise cancel time selection function
In NORMAL1/2 or IDLE1/2 mode, a signal that has been sampled by fcgck is sampled at the sampling
interval selected at EINTCRx<INTxNC>. If the same level is detected three consecutive times, the signal
is recognized as a signal. If not, the signal is removed as noise.
Figure 4-5 Noise Cancel Operation
In SLOW1/2 or SLEEP1 mode, a signal is sampled by the low frequency clock divided by 4. If the same
level is detected twice consecutively, the signal is recognized as a signal.
In IDLE0, SLEEP0 or STOP mode, the noise canceller sampling operation is stopped and an external
interrupts are unavailable. When operation returns to NORMAL1/2, IDLE1/2, SLOW1/2 or SLEEP1
mode, sampling operation restarts.
Note 1: If noise is input consecutively during sampling of external interrupt pins, the noise cancel function
does not work properly. Set EINTCRx<INTxNC> according to the cycle of externally input noise.
Note 2: If an external interrupt pin is used as an output port, the input signal to the port is fixed to "L" when the
mode is switched to the output mode, and thus an interrupt request occurs. To use the pin as an out-
put port, clear the corresponding interrupt enable register to "0" to disable the generation of interrupt.
Note 3: Interrupt requests may be generated during transition of the operation mode. Before changing the
operation mode, clear the corresponding interrupt enable register to "0" to disable the generation of
interrupt. When the operation mode is changed from NORMAL1/2 or IDLE1/2 to SLOW1/2 or
SLEEP1, wait 12/fs [s] after the operation mode is changed and clear the interrupt latch. And when
the operation mode is changed from SLOW1/2 or SLEEP1 to NORMAL1/2 or IDLE1/2, wait 2/
fcgck+3/fspl [s] after the operation mode is changed and clear the interrupt latch.
4.3.4
External interrupt 4
External interrupt 4 detects the falling edge, the rising edge, both edges or "H" level of the INT4 pin and gen-
erates interrupt request signals.
4.3.4.1
Interrupt request signal generating condition detection function
Select an interrupt request signal generating condition at EINTCR4<INT4ES> for external interrupt 4.
Table 4-3 Noise Canceller Sampling Lock
EINTCRx<INTxNC>
Sampling interval
00
fcgck
01
fcgck/2
2
10
fcgck/2
3
11
fcgck/2
4
INTi pin
Signal after noise removal
i=1 to 3
Noise
Signal
Содержание TLCS-870/C1 Series
Страница 1: ...8 Bit Microcontroller TLCS 870 C1 Series TMP89FM42 查询TMP89FM42供应商 捷多邦 专业PCB打样工厂 24小时加急出货 ...
Страница 3: ...Revision History Date Revision 2007 10 25 1 First Release 2007 11 3 2 Contents Revised ...
Страница 4: ......
Страница 14: ......
Страница 18: ...1 3 Block Diagram TMP89FM42 1 3 Block Diagram Figure 1 2 Block Diagram ...
Страница 22: ...1 4 Pin Names and Functions TMP89FM42 ...
Страница 60: ...2 CPU Core 2 5 Revision History TMP89FM42 ...
Страница 76: ...3 Interrupt Control Circuit 3 8 Revision History TMP89FM42 ...
Страница 86: ...4 External Interrupt control circuit 4 3 Function TMP89FM42 ...
Страница 102: ...7 Voltage Detection Circuit 7 5 Revision History TMP89FM42 ...
Страница 126: ...8 I O Ports 8 3 I O Port Registers TMP89FM42 Note 2 i 0 to 1 ...
Страница 136: ...8 I O Ports 8 5 Revision History TMP89FM42 ...
Страница 142: ...9 Special Function Registers 9 3 SFR3 0x0E40 to 0x0EFF TMP89FM42 ...
Страница 146: ...10 Low Power Consumption Function for Peripherals TMP89FM42 ...
Страница 149: ...TMP89FM42 11 3 Revision History Rev Description RA001 Deleted SLEEP2 description ...
Страница 150: ...11 Divider Output DVO 11 3 Revision History TMP89FM42 ...
Страница 220: ...15 Real Time Clock RTC 15 4 Real Time Clock Operation TMP89FM42 ...
Страница 250: ...16 Asynchronous Serial Interface UART 16 15 Revision History TMP89FM42 ...
Страница 302: ...18 Serial Bus Interface SBI 18 7 Revision History TMP89FM42 ...
Страница 336: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 Note 1 Make sure that you set the C register to 0x00 LD FLSCR2 0xD5 ...
Страница 338: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 ...
Страница 384: ...22 Serial PROM Mode 22 15 Revision History TMP89FM42 ...
Страница 388: ...24 Input Output Circuit 24 1 Control Pins TMP89FM42 ...
Страница 404: ...25 Electrical Characteristics 25 11 Revision History TMP89FM42 ...
Страница 406: ...26 Package Dimensions TMP89FM42 ...
Страница 408: ......