Filter
Top Products
Section 38 States and Handling of Pins
R01UH0134EJ0400 Rev. 4.00 Page 2057 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
38.2 Treatment of Unused Pins
Table 38.3 Handling of Pins that are not in Use (Except for User Debugging Interface and
Emulator Interface Pins)
Pin Handling
NMI Fix this pin at a high level (pull up or connect to a power-
supply).
DP, DM, and VBUS Connect these pins to USBDPVss.
REFRIN Connect this pin, via a 5.6 k 20 % resistor, to
USBAPVcc.
1.2-V power dedicated to the USB
(USBAVcc, USBDVcc, USBUVcc)
Supply power at 1.2 V
3.3-V power dedicated to the USB
(USBAPVcc, USBDPVcc)
Supply power at 3.3 V
Dedicated USB ground (USBAPVss,
USBDPVss, USBAVss, USBDVss,
USBUVss)
Connect to ground
AVref Connect this pin to AVcc.
Dedicated A/D power (AVcc) Supply power at 3.3 V
Dedicated A/D ground (AVss) Connect to ground
Dedicated input pins other than
those listed above
Fix the level on the pins (pull them up or down, or connect
them to the power-supply or ground level).
Input/output pins other than those
listed above
Make the input-pin settings and then fix the level (pull them
up or down) alternatively, make the output-pin settings and
leave the pins open-circuit.
Dedicated output pins other than
those listed above
Open-circuit
Note: It is recommended that the values of pull-up or pull-down resistors are in the range from 4.7
k to 100 k.