Section 8
I/O Ports
Rev. 1.00 Mar. 12, 2008 Page 249 of 1178
REJ09B0403-0100
(6)
Noise Canceler Cycle Setting Register (NCCS)
NCCS controls the sampling cycle of the noise cancelers.
Bit
Bit Name
Initial Value
R/W Description
7 to 3
Undefined
R/W Reserved
Undefined value is read from these bits.
2
1
0
NCCK2
NCCK1
NCCK0
0
0
0
R/W
R/W
R/W
These bits set the sampling cycle of the noise
cancelers.
•
When
φ
= 34 MHz
000: 0.06
µ
s
φ
/2 100:
963.8
µ
s
φ
/32768
001: 0.94
µ
s
φ
/32
101: 1.9 ms
φ
/65536
010: 15.1
µ
s
φ
/512
110: 3.9 ms
φ
/131072
011: 240.9
µ
s
φ
/8192
111: 7.7 ms
φ
/262144
Latch
∆
t
∆
t
Sampling clock selection
φ
/2,
φ
/32,
φ
/512,
φ
/8192,
φ
/32768,
φ
/65536,
φ
/131072,
φ
/262144
Pin input
Sampling clock
Match
detection
circuit
Port data
register
Latch
Latch
Figure 8.5 Noise Canceler Circuit
Summary of Contents for H8S Family
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Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
Page 1226: ...Rev 1 00 Mar 12 2008 Page 1178 of 1178 REJ09B0403 0100...
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Page 1230: ...H8S 2472 Group H8S 2462 Group Hardware Manual...