UPD70F3771GF-GAT-AX Renesas Electronics America, UPD70F3771GF-GAT-AX Datasheet - Page 1048

• Manufacturer Part Number: UPD70F3771GF-GAT-AX
• Description: MCU 32BIT V850ES/JX3-H 128-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Hr

Specifications of UPD70F3771GF-GAT-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 48MHz
• Connectivity: CAN, CSI, EBI/EMI, I²C, UART/USART, USB
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 96
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

V850ES/JG3-H, V850ES/JH3-H
R01UH0042EJ0400 Rev.4.00
Sep 30, 2010
(3) Detection of USB cable connection/disconnection
(4) Floating protection during initialization or when USBF is unused
The USB function controller (USBF) requires a VBUS input signal to recognize whether the USB cable is connected
or disconnected, because the state of the USBF is controlled by hardware. The voltage from the USB host or HUB
(5 V) is applied as the VBUS input signal when the USB cable VBUS is connected to the USB host or HUB while
the USBF power is off. Therefore, for IC1 in Figure 21-3, use an IC to which voltage can be applied when the
system power is off. When disconnecting the USB cable in the circuit in Figure 21-3, the input signal to INTP10
may be unstable while the VBUS voltage is dropping. It is therefore recommended to use a Schmitt buffer for IC1 in
Figure 21-3.
When the USB function controller is initialized or unused, to avoid a floating status, pull the D+/D− pins down using
a resistor of 50 kΩ or higher.
CHAPTER 21 USB FUNCTION CONTROLLER (USBF)
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