tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 81

• Manufacturer Part Number: tmp89fm42
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA000
4.3 Function
Table 4-1 External Interrupts
4.3.1 Low power consumption function
Source
INT0
INT1
INT2
INT3
INT4
INT5
to 4.
and 5.
Note 4: The contents of EINTCRx<INTxLVL> are updated each time an interrupt request signal is generated.
Note 5: Bits 7 to 5 of EINTCR4 are read as "0".
The condition for generating interrupt request signals and the noise cancel time can be set for external interrupts 1
The condition for generating interrupt request signals and the noise cancel time are fixed for external interrupts 0
Note 1: fcgck, Gear clock [Hz]; fs, low frequency clock [Hz]; fspl, Sampling interval [Hz]
(POFFCR3) when they are not used.
power. Note that this makes external interrupts unavailable. Setting POFFCR3<INTxEN> to "1" supplies
(enables) the basic clock for external interrupts and makes external interrupts available.
using the external interrupt function for the first time, be sure to set POFFCR3<INTxEN> to "1" in the initial
setting of software (before operating the external interrupt control registers).
External interrupts have a function that saves power by using the low power consumption register
Setting POFFCR3<INTxEN> to "0" stops (disables) the basic clock for external interrupts and helps save
After reset, POFFCR3<INTxEN> is initialized to "0" and external interrupts become unavailable. When
Note:Interrupt request signals may be generated when INTxEN is changed. Before changing INTxEN, clear the cor-
INT1
INT2
INT3
INT4
INT0
INT5
Pin
responding 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.
IMF AND EF16 =
1
IMF AND EF17 =
1
IMF AND EF18 =
1
IMF AND EF19 =
1
IMF AND EF20 =
1
IMF AND EF8 = 1
Enable conditions
Falling edge
Falling edge
Rising edge
Both edges
Falling edge
Rising edge
Both edges
Falling edge
Rising edge
Both edges
Falling edge
Rising edge
Both edges
"H" level
Falling edge
signal generated at
Interrupt request
Page 67
Less than 1/fcgck: Noise
More than 1/fcgck and less than 2/
fcgck: Indeterminate
More than 2/fcgck: Signal
Less than 2/fspl: Noise
More than 2/fspl and less than 3/fspl+1/
fcgck: Indeterminate
More than 3/fspl+1/fcgck: Signal
Less than 2/fspl: Noise
More than 2/fspl and less than 3/fspl+1/
fcgck: Indeterminate
More than 3/fspl+1/fcgck: Signal
Less than 2/fspl: Noise
More than 2/fspl and less than 3/fspl+1/
fcgck: Indeterminate
More than 3/fspl+1/fcgck: Signal
Less than 2/fspl: Noise
More than 2/fspl and less than 3/fspl+1/
fcgck: Indeterminate
More than 3/fspl+1/fcgck: Signal
Less than 1/fcgck: Noise
More than 1/fcgck and less than 2/
fcgck: Indeterminate
More than 2/fcgck: Signal
NORMAL1/2, IDLE1/2
External interrupt pin input signal width and noise removal
Less than 4/fs: Noise
More than 4/fs and less than 8/fs: Inde-
terminate
More than 8/fs: Signal
Less than 4/fs: Noise
More than 4/fs and less than 8/fs: Inde-
terminate
More than 8/fs: Signal
Less than 4/fs: Noise
More than 4/fs and less than 8/fs: Inde-
terminate
More than 8/fs: Signal
Less than 4/fs: Noise
More than 4/fs and less than 8/fs: Inde-
terminate
More than 8/fs: Signal
Less than 4/fs: Noise
More than 4/fs and less than 8/fs: Inde-
terminate
More than 8/fs: Signal
Less than 4/fs: Noise
More than 4/fs and less than 8/fs: Inde-
terminate
More than 8/fs: Signal
SLOW1/2, SLEEP1
TMP89FM42