TMP86CS49FG datasheet(57/252 Pages) TOSHIBA

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Page 43

TMP86CS49FG

3.7 External Interrupts

The TMP86CS49FG has 5 external interrupt inputs. These inputs are equipped with digital noise reject circuits

(Pulse inputs of less than a certain time are eliminated as noise).

Edge selection is also possible with INT1 to INT3. The INT0/P00 pin can be configured as either an external inter-

rupt input pin or an input/output port, and is configured as an input port during reset.

Edge selection, noise reject control and INT0/P00 pin function selection are performed by the external interrupt

control register (EINTCR).

Note 1: In NORMAL1/2 or IDLE1/2 mode, if a signal with no noise is input on an external interrupt pin, it takes a maximum of "sig-

nal establishment time + 6/fs[s]" from the input signal's edge to set the interrupt latch.

Note 2: When INT0EN = "0", IL4 is not set even if a falling edge is detected on the INT0 pin input.

Note 3: When a pin with more than one function is used as an output and a change occurs in data or input/output status, an inter-

rupt request signal is generated in a pseudo manner. In this case, it is necessary to perform appropriate processing such

as disabling the interrupt enable flag.

Source

Enable Conditions

Release Edge

Digital Noise Reject

INT0

IMF EF4 INT0EN=1

Falling edge

Pulses of less than 2/fc [s] are eliminated as

noise. Pulses of 7/fc [s] or more are considered

to be signals. In the SLOW or the SLEEP mode,

pulses of less than 1/fs [s] are eliminated as

noise. Pulses of 3.5/fs [s] or more are consid-

ered to be signals.

INT1

IMF EF6 = 1

Falling edge

Rising edge

Pulses of less than 15/fc or 63/fc [s] are elimi-

nated as noise. Pulses of 49/fc or 193/fc [s] or

more are considered to be signals. In the SLOW

or the SLEEP mode, pulses of less than 1/fs [s]

are eliminated as noise. Pulses of 3.5/fs [s] or

more are considered to be signals.

INT2

IMF EF8 = 1

Falling edge

Rising edge

Pulses of less than 7/fc [s] are eliminated as

noise. Pulses of 25/fc [s] or more are considered

to be signals. In the SLOW or the SLEEP mode,

pulses of less than 1/fs [s] are eliminated as

noise. Pulses of 3.5/fs [s] or more are consid-

ered to be signals.

INT3

IMF EF12 = 1

Falling edge

Rising edge

Pulses of less than 7/fc [s] are eliminated as

noise. Pulses of 25/fc [s] or more are considered

to be signals. In the SLOW or the SLEEP mode,

pulses of less than 1/fs [s] are eliminated as

noise. Pulses of 3.5/fs [s] or more are consid-

ered to be signals.

INT5

IMF EF23 = 1

Falling edge

Pulses of less than 2/fc [s] are eliminated as

noise. Pulses of 7/fc [s] or more are considered

to be signals. In the SLOW or the SLEEP mode,

pulses of less than 1/fs [s] are eliminated as

noise. Pulses of 3.5/fs [s] or more are consid-

ered to be signals.

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