DF2211NP24V Renesas Technology / Hitachi Semiconductor, DF2211NP24V Datasheet - Page 579

• Manufacturer Part Number: DF2211NP24V
• Description: H8S/2200 Series, 2212 Group, USB, RTC, HSS TNP-64B; Vcc= 2.7 to 3.6 volts, Temp= -20 to 75 C; Package: PVQN0064LB-A
• Manufacturer: Renesas Technology / Hitachi Semiconductor

14.7
Figures 14.26 and 14.27 show the USB external circuit examples of this LIS.
Notes:
Pull-up
control external
circuit for
full speed
VCC
USB External Circuit Example
1.
2.
3.
Step-down to the operating voltage VCC (3.3 V) of this LSI.
To protect the LSI, voltage applicable IC such as HD74LV-A series must be used
even when the system power is turned off.
Prevent the VBUS pin from being affected by noise while USB is in communication.
P36
*
2
USB
Figure 14.26 USB External Circuit in Bus-Powered Mode
(3.3 V)
VCC
1.5 kΩ
VBUS
Regulator
*
3
DrVCC
(3.3 V)
(3.3 V)
VCC
VBUS
*
(5 V)
1
USD+
Internal transceiver
USB connector
D+
24 Ω
USD-
D-
24 Ω
DrVSS
GND
Rev.7.00 Dec. 24, 2008 Page 525 of 698
VSS
UBPM
0: Bus-powered mode
REJ09B0074-0700