p2125vps20 Renesas Electronics Corporation., p2125vps20 Datasheet - Page 207

• Manufacturer Part Number: p2125vps20
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

8.4.6
P4NCCS controls the sampling cycles of the noise canceller.
8.4.7
• P47/WAIT/SDA0
Note: When this pin is set as the P47 output pin, it is an NMOS push-pull output. SDA0 is an
7 to 3
2
1
0
Bit
Operating Mode
WMS1
ICE
P47DDR
Pin Function
The pin function is switched as shown below according to the combination of operating mode,
the WMS1 bit in WSCR, the ICE bit in ICCR of IIC_0, and the P47DDR bit.
NMOS open-drain output, and has direct bus drive capability.

P4NCCK2
P4NCCK1
P4NCCK0
Bit Name
Port 4 Noise Cancel Cycle Setting Register (P4NCCS)
Pin Functions
P47 input
pin
Initial
Value
Undefined R/W
0
0
0
0
Modes 1, 2, 3 (EXPE = 1)
0
output pin
P47
R/W
R/W
R/W
R/W
0
1
Description
Reserved
The read data is undefined. The write value should
always be 0.
These bits set the sampling cycles of the noise canceller.
When φ is 10 MHz
000:
001:
010:
011:
100:
101:
110:
111:
SDA0 I/O
pin
—
1
0.80 µs
12.8 µs
3.3 ms
6.6 ms
13.1 ms
26.2 ms
52.4 ms
104.9 ms
input pin
WAIT
—
—
1
Rev. 1.00 Sep. 21, 2006 Page 169 of 658
φ/2
φ/32
φ/8192
φ/16384
φ/32768
φ/65536
φ/131072
φ/262144
P47 input
pin
0
Modes 2, 3 (EXPE = 0)
0
output pin
P47
—
Section 8 I/O Ports
1
REJ09B0310-0100
SDA0 I/O
pin
—
1