Toshiba – Toshiba TMP87CP24AF User Manual
Page 41
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TOSHIBA
TMP87CM24A/P24A
External interrupt Control Register 1
7
6
5
4
EINTCR
(0037
h
)
IN TI
IN TO
IN T3
IN T2
IN TI
IN T3W
N C
EN
ES
ES
ES
(initial value
0 0
**
0 0 0 0
)
INT1NC
Noise reject time select
0 : Pulses of less than 63/fc [s] are eliminated as noise
1 : Pulses of less than 15/fc [s] are eliminated as noise
INTOEN
P10/INT0 pin configuration
0 : P10 input/output
1 : INTO pin (port PI 0 should be set to an input mode)
INT3ES
0 : Rising edge
INT2ES
INT3tolNT1 edge select
INTIES
1 : Falling edge
INT3W
INT3 both edge selection
0 : Refer to INT3ES
1 : Both edge detection
R/W
Note 1 : fc: High-frequency clock [Hz]
*: Don't care
Figure 1-26. (a) External Interrupt Control Register
External interrupt Control Register 2
EINT3CR
(
001
F
h
)
IN T
'
M f-c
'
IN T3
EO T 1
1
D ET
(initial value :
0 0 0 0
0
***)
INTEDT
Flag indicating an interrupt at
selected edge/non-selected
edge, when INT3W = 1 (for
both-edge interrupts).
0 : Interrupt at selected edge or no interrupt
1 : Interrupt at non-selected edge
R
NCS
Noise cancellation time select
for INT3 digital noise filter (valid
only when INT3W = 1)
0 0 0
0 0 1
0 10
oil
10 0
10 1
110
111
No noise cancellation
Cancels (2®/fc x 7
-
6
/fc) as noise.
Cancels (27fc x 7
-
6
/fc) as noise.
Cancels (2®/fc x 7
-
6
/fc) as noise.
Cancels (2®/fc x 7
-
6
/fc) as noise.
Cancels (2’°/fc x 7
-
6
/fc) as noise.
Cancels (2"/fc x 7
-
6
/fc) as noise.
Cancels (2’Vfc x 7
-
6
/fc) as noise.
R/W
INT3DET
INT3 interrupt detection flag
0 : No interrupt
1 : Interrupt
R
Note 1: INTEDT and NCS are valid only when the INT3W bit in EINTCR (#0037
h
) is set to 1.
Therefore, when INT3W = 0, the digital noise filter set by the NCS bit is disabled.
Figure 1-26. (b) External Interrupt Control Register 2
3
-
24-41
2002
-
10-03