4. Functions
4.8 Debug I/F
This is a debugging pin for the built-in Bridge Sequencer. It is not intended for use by the user and should be
disregarded.
4.9 1.8-V Regulator
This regulator generates 1.8-V internal core voltage. The range of input voltages is from 3.3 to 5.0 V.
4.10 3.3-V Regulator
This regulator generates 3.3 V for the USB. The range of input voltages is from 3.3 to 5.0 V.
4.11 VBUS SW
This is a VBUS output block built into the LSI.
4.12 Test Circuit
This is a circuit for IC tests. It is not intended for use by the user and should be disregarded.
S1R72U01 Data Sheet
Seiko Epson Corporation
5
(Rev. 1.20)