m3819 Renesas Electronics Corporation., m3819 Datasheet - Page 200

• Manufacturer Part Number: m3819
• Description: Mitsubishi 8-bit Single-chip Microcomputer 740 Family / 38000 Series
• Manufacturer: Renesas Electronics Corporation.

3. APPENDIX
Fig. 3.3.13 Structure of Interrupt interval determination register
Fig. 3.3.14 Structure of Interrupt interval determination control register
186
Interrupt interval determination register
Interrupt interval determination control register
b7 b6 b5 b4 b3 b2 b1 b0
b7 b6 b5 b4 b3 b2 b1 b0
Note : When the noise filter sampling clock selection bits (bits 2 and 3) of the
Note : When the noise filter sampling clock selection bits (bits 2 and 3) of the
B
0
1
2
3
4
5
6
7
B
0
1
2
3
4
5
6
7
Interrupt interval determination register (IID) [Address:30
Interrupt interval determination control register (IIDCON) [Address:31
Interrupt interval determination
circuit operating selection bit
Counter sampling clock
selection bit
Noise filter sampling clock
selection bits (INT
One-sided/both-sided edge
detection selection bit
Nothing is allocated for these bits. These are write disabled bits.
When these bits are read out, the values are "0."
This register stores the values obtaind by counting the
following interval with a counter sampling clock.
This register is read-only.
Interrupt interval determination control register (IIDCON) (Address: 31
set to “00” (when no noise filter is used), the both-sided edge detection
function is not available.
Interrupt interval determination control register (IIDCON) (Address: 31
set to “00” (when no noise filter is used), the both-sided edge detection
function is not available.
Falling edge interval
Rising edge interval
Both-sided edge interval
(selected by the interrupt edge selection register)
Name
3819 Group USER’S MANUAL
2
)
Function
0 : Stopped
1 : Operating
0 : f(X
1 : f(X
00 : Filter stop
01 : f(X
10 : f(X
11 : f(X
0 : One-sided edge detection
1 : Both-sided edge detection
IN
IN
IN
IN
IN
)/256
)/512
)/64
)/128
)/256
Function
3.3 Control registers
16
MITSUBISHI MICROCOMPUTER
]
(Note)
3819 Group
16
At reset
At reset
]
0
0
0
?
?
?
?
?
?
?
?
0
0
0
0
0
R W
R W
16
16
) is
) is