DF2211CUNP24V Renesas Electronics America, DF2211CUNP24V Datasheet - Page 536

• Manufacturer Part Number: DF2211CUNP24V
• Description: MCU 16BIT FLASH 3V 64K 64-QFN
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2211CUNP24V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 24MHz
• Connectivity: SCI, SmartCard, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 6x10b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 64-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 14 Universal Serial Bus (USB)
14.3.16 USB Interrupt Flag Register 0 (UIFR0)
UIFR0 is an interrupt flag register indicating the setup command reception, EP0 and EP3
transmission/reception, and bus reset state. If the corresponding bit is set to 1, the corresponding
EXIRQ0 or EXIRQ1 interrupt is requested to the CPU. A bit in this register can be cleared by
writing 0 to it. Writing 1 to a bit is invalid and causes no operation. Consequently, to clear a flag,
write 0 to the corresponding bit and 1 to all the other bits. (For example, write H'DF to clear bit 5.)
The bit-clear instruction is a read/modify/write instruction, so if a new flag is set between the read
and write operations, there is a danger that it may be cleared erroneously. Therefore, do not use the
bit-clear instruction to clear bits in this interrupt flag resister.
Rev.7.00 Dec. 24, 2008 Page 480 of 698
REJ09B0074-0700