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ATSAM3U1CA-AU Datasheet(PDF) 6 Page - ATMEL Corporation |
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ATSAM3U1CA-AU Datasheet(HTML) 6 Page - ATMEL Corporation |
6 / 61 page 6 6430BS–ATARM–01-Sep-09 SAM3U Series Flash Memory ERASE Flash and NVM Configuration Bits Erase Command Input High VDDBU Internal permanent 15K pulldown Reset/Test NRST Microcontroller Reset I/O Low VDDIO Internal permanent pullup NRSTB Asynchronous Microcontroller Reset Input Low VDDBU Internal permanent pullup TST Test Select Input Internal permanent pulldown Universal Asynchronous Receiver Transceiver - UART URXD UART Receive Data Input UTXD UART Transmit Data Output PIO Controller - PIOA - PIOB - PIOC PA0 - PA31 Parallel IO Controller A I/O VDDIO •Schmitt Trigger (1) Reset State: •PIO Input •Internal pullup enabled PB0 - PB31 Parallel IO Controller B I/O •Schmitt Trigger (2) Reset State: •PIO Input •Internal pullup enabled PC0 - PC31 Parallel IO Controller C I/O •Schmitt Trigger(3) Reset State: •PIO Input •Internal pullup enabled External Bus Interface D0 - D15 Data Bus I/O A0 - A23 Address Bus Output NWAIT External Wait Signal Input Low Static Memory Controller - SMC NCS0 - NCS3 Chip Select Lines Output Low NWR0 - NWR1 Write Signal Output Low NRD Read Signal Output Low NWE Write Enable Output Low NBS0 - NBS1 Byte Mask Signal Output Low NAND Flash Controller - NFC NANDOE NAND Flash Output Enable Output Low NANDWE NAND Flash Write Enable Output Low NANDRDY NAND Ready Input Table 3-1. Signal Description List (Continued) Signal Name Function Type Active Level Voltage Reference Comments |
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