R5F61668RN50FPV Renesas Electronics America, R5F61668RN50FPV Datasheet - Page 1036

• Manufacturer Part Number: R5F61668RN50FPV
• Description: IC H8SX/1668 MCU FLASH 144LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of R5F61668RN50FPV

• Core Processor: H8SX
• Core Size: 16/32-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, SmartCard, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 92
• Program Memory Size: 1MB (1M x 8)
• Program Memory Type: FLASH
• Ram Size: 56K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• For Use With: R0K561668S000BE - KIT STARTER FOR H8SX/1668R0K561664S001BE - KIT STARTER FOR H8SX/1651HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 20 USB Function Module (USB)
20.5
20.5.1
The above flowchart shows the operation in the case of in section 20.9, Example of USB External
Circuitry.
In applications that do not require USB cable connection to be detected, processing by the USB
bus connection interrupt is not necessary. Preparations should be made with the bus-reset
interrupt.
Rev. 2.00 Sep. 24, 2008 Page 1002 of 1468
REJ09B0412-0200
No
Operation
Cable Connection
USB bus connection interrupt
reception complete interrupt
Wait for setup command
UDC core reset release
USB cable connection
D+ pull-up enabled?
Cable disconnected
General output port
Bus reset reception
Bus reset interrupt
IFR1.VBUSF = 1
VBUS pin = 0 V
UDC core reset
IFR0.BRST = 1
USB function
Yes
Figure 20.2 Cable Connection Operation
Interrupt request
Interrupt request
start of USB communication
reception complete interrupt
Firmware preparations for
completed, enable D+ pull-up
Wait for setup command
As soon as preparations are
(EP0, EP1, EP2, EP3)
Clear bus reset flag
Clear VBUSF flag
USB module interrupt
in general output port
(IFR1.VBUSF)
(IFR0.BRST)
Clear FIFOs
Application
setting
Initial
settings