tmp88cu74 TOSHIBA Semiconductor CORPORATION, tmp88cu74 Datasheet - Page 35

• Manufacturer Part Number: tmp88cu74
• Description: Cmos 8-bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Note 1: The noise reject function is turned off in SLOW and SLEEP modes. Also, the noise reject times are
Note 2: The noise reject function is also affected for timer/counter input (TC1 pin, TC3 pin).
Note 3: The pulse width (both “H” and “L”evel) for input to the
Note 4: If a noiseless signal is input to the external interrupt pin in the NORMAL 1/2 or IDLE 1/2 mode, the
Note 5: Even if the falling edge of
1.5.3
Source
INT0
INT1
INT2
INT3
INT4
INT5
INT
0
not constant for pulses input while transiting between operating modes.
cycle.
maximum time from the edge of input signal until the IL is set is as follows:
/
INT
1. INT1 pin
2. INT2 pin
External Interrupts
a certain time are eliminated as noise).
as either an external interrupt input pin or an input/output port, and is configured as an
input port during reset.
the external interrupt control register (EINTCR).
INT5
5
The TMP88CU74 has six external interrupt inputs (
Edge selection is also possible with INT1 to INT4. The
Edge selection, noise reject control and
input
INT1
INT2
INT3
INT4
INT
INT
Pin
). Four of these are equipped with digital noise reject circuits(pulse inputs of less than
0
5
Function Pin
Secondary
49/fc [s] (INT1NC = 1),
25/fc [s]
P20/
P15/TC1
P17/TC3
P10
P11
P16
t
STOP
INTL
INT0
Table 1.5.2 External Interrupts
Enable Conditions
IMF = 1, INT0EN = 1
IMFKEF5 = 1
IMFKEF15 = 1
pin input is detected at INT0EN = 0, the interrupt latch IL3 is not set.
IMFKEF11 = 1
IMFKEF12 = 1
IMFKEF7 = 1
88CU74-35
t
INTH
193/fc [s] (INT1NC = 0)
INT0
Falling edge
Falling edge
Falling edge
Rising edge
/P10 pin function selection are performed by
INT0
t
Note: tcyc = 4/fc [s] (in NORMAL1/2, IDEL1/2 mode)
INTL
Edge
or
, t
and
INTH
4/fs (in SLOW, SLEEP mode)
INT0
INT5
≥ 2 tcyc (Note: tcyc = 4/fm [s])
INT0
Pulses of less than 15/fc or 63/fc [s]
are eliminated as noise. Pulses of
48/fc or 192/fc [s] or more are
considered to be signals.
Pulses of less than 7/fc [s] are
eliminated as noise. Pulses of 24/fc
[s] or more are considered to be
signals.
, INT1, INT2, INT3, INT4,
pins must be over 2 machine
/P10 pin can be configured
Digital Noise Reject
 (hysteresis input)
 (hysteresis input)
TMP88CU74
2007-10-19
2003-02-17