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ATmega32U4 Datasheet(PDF) 9 Page - ATMEL Corporation |
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ATmega32U4 Datasheet(HTML) 9 Page - ATMEL Corporation |
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9 / 22 page  9 7766DS–AVR–01/09 ATmega16U4/ATmega32U4 4. Register Summary Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page (0xFF) Reserved - - - - - - - - (0xFE) Reserved - - - - - - - - (0xFD) Reserved - - - - - - - - (0xFC) Reserved - - - - - - - - (0xFB) Reserved - - - - - - - - (0xFA) Reserved - - - - - - - - (0xF9) Reserved - - - - (0xF8) Reserved - - - - - - - - (0xF7) Reserved - - - - - - - - (0xF6) Reserved - - - - - - - - (0xF5) Reserved - - - - - - - - (0xF4) UEINT - EPINT6:0 (0xF3) UEBCHX - - - - -BYCT10:8 (0xF2) UEBCLX BYCT7:0 (0xF1) UEDATX DAT7:0 (0xF0) UEIENX FLERRE NAKINE - NAKOUTE RXSTPE RXOUTE STALLEDE TXINE (0xEF) UESTA1X - - - - - CTRLDIR CURRBK1:0 (0xEE) UESTA0X CFGOK OVERFI UNDERFI - DTSEQ1:0 NBUSYBK1:0 (0xED) UECFG1X EPSIZE2:0 EPBK1:0 ALLOC - (0xEC) UECFG0X EPTYPE1:0 - - - - - EPDIR (0xEB) UECONX - - STALLRQ STALLRQC RSTDT - - EPEN (0xEA) UERST - EPRST6:0 (0xE9) UENUM - - - - - EPNUM2:0 (0xE8) UEINTX FIFOCON NAKINI RWAL NAKOUTI RXSTPI RXOUTI STALLEDI TXINI (0xE7) Reserved - - - - (0xE6) UDMFN - - - FNCERR - - - - (0xE5) UDFNUMH - - - - - FNUM10:8 (0xE4) UDFNUML FNUM7:0 (0xE3) UDADDR ADDEN UADD6:0 (0xE2) UDIEN - UPRSME EORSME WAKEUPE EORSTE SOFE MSOFE SUSPE (0xE1) UDINT - UPRSMI EORSMI WAKEUPI EORSTI SOFI MSOFI SUSPI (0xE0) UDCON - - - - RSTCPU LSM RMWKUP DETACH (0xDF) Reserved (0xDE) Reserved (0xDD) Reserved (0xDC) Reserved (0xDB) Reserved (0xDA) USBINT - - - - - - - VBUSTI (0xD9) USBSTA - - - - - -ID VBUS (0xD8) USBCON USBE - FRZCLK OTGPADE - - - VBUSTE (0xD7) UHWCON - - - - - - - UVREGE (0xD6) Reserved (0xD5) Reserved (0xD4) DT4 DT4H3 DT4H2 DT4H1 DT4H0 DT4L3 DT4L2 DT4L1 DT4L0 (0xD3) Reserved (0xD2) OCR4D Timer/Counter4 - Output Compare Register D (0xD1) OCR4C Timer/Counter4 - Output Compare Register C (0xD0) OCR4B Timer/Counter4 - Output Compare Register B (0xCF) OCR4A Timer/Counter4 - Output Compare Register A (0xCE) UDR1 USART1 I/O Data Register (0xCD) UBRR1H - - - - USART1 Baud Rate Register High Byte (0xCC) UBRR1L USART1 Baud Rate Register Low Byte (0xCB) Reserved - - - - - - - - (0xCA) UCSR1C UMSEL11 UMSEL10 UPM11 UPM10 USBS1 UCSZ11 UCSZ10 UCPOL1 (0xC9) UCSR1B RXCIE1 TXCIE1 UDRIE1 RXEN1 TXEN1 UCSZ12 RXB81 TXB81 (0xC8) UCSR1A RXC1 TXC1 UDRE1 FE1 DOR1 PE1 U2X1 MPCM1 (0xC7) CLKSTA - - - - - - RCON EXTON (0xC6) CLKSEL1 RCCKSEL3 RCCKSEL2 RCCKSEL1 RCCKSEL0 EXCKSEL3 EXCKSEL2 EXCKSEL1 EXCKSEL0 (0xC5) CLKSEL0 RCSUT1 RCSUT0 EXSUT1 EXSUT0 RCE EXTE -CLKS (0xC4) TCCR4E TLOCK4 ENHC4 OC4OE5 OC4OE4 OC4OE3 OC4OE2 OC4OE1 OC4OE0 (0xC3) TCCR4D FPIE4 FPEN4 FPNC4 FPES4 FPAC4 FPF4 WGM41 WGM40 (0xC2) TCCR4C COM4A1S COM4A0S COM4B1S COM4B0S COM4D1S COM4D0S FOC4D PWM4D (0xC1) TCCR4B PWM4X PSR4 DTPS41 DTPS40 CS43 CS42 CS41 CS40 (0xC0) TCCR4A COM4A1 COM4A0 COM4B1 COM4B0 FOC4A FOC4B PWM4A PWM4B (0xBF) TC4H - - - - - Timer/Counter4 High Byte |
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