upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 348
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upd78f0730
Manufacturer Part Number
upd78f0730
Description
8-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0730.pdf
(518 pages)
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12.4.4 Peripheral control register
348
(1) USB function 0 buffer control register (UF0BC)
UF0BC
Bit position
This register performs enable control and floating control on the input buffer of the USB function.
This register can be read or written in 8-bit units.
1
0
7
0
UBFIEN
UBFIOR
Bit name
6
0
CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
This bit controls use of the USB buffer.
Caution Clear this bit to 0 when the USB is not used. If this bit is set to 1, a
This bit controls use of floating measures of the USB buffer.
This bit prevents erroneous recognition of Bus Reset, Suspend, and Resume due to an
undefined value when a cable is not connected (when data input is floated). When this
bit is set to 1, control the processing for floating by the VBUS signal (which recognizes
cable connection).
5
0
1: Buffer valid
0: Buffer invalid
1: Disables floating measures
0: Enables floating measures
Preliminary User’s Manual U19014EJ1V0UD
current of 3 mA (TYP.) constantly flows, regardless of whether the USB is
used or not.
4
0
3
0
2
0
UBFIEN
Function
1
UBFIOR
0
Address
FF8BH
After reset
00H
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