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MSP430F2122IPW Datasheet(PDF) 10 Page - Texas Instruments |
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MSP430F2122IPW Datasheet(HTML) 10 Page - Texas Instruments |
10 / 77 page MSP430F21x2 SLAS578H – NOVEMBER 2007 – REVISED JUNE 2011 www.ti.com Special Function Registers Most interrupt and module enable bits are collected into the lowest address space. Special function register bits not allocated to a functional purpose are not physically present in the device. Simple software access is provided with this arrangement. Legend rw Bit can be read and written. rw-0, 1 Bit can be read and written. It is Reset or Set by PUC. rw-(0), (1) Bit can be read and written. It is Reset or Set by POR. SFR bit is not present in device. Table 6. Interrupt Enable 1 Address 7 6 5 4 3 2 1 0 00h ACCVIE NMIIE OFIE WDTIE rw-0 rw-0 rw-0 rw-0 WDTIE Watchdog timer interrupt enable. Inactive if watchdog mode is selected. Active if watchdog timer is configured in interval timer mode. OFIE Oscillator fault interrupt enable NMIIE (Non)maskable interrupt enable ACCVIE Flash access violation interrupt enable Table 7. Interrupt Enable 2 Address 7 6 5 4 3 2 1 0 01h UCB0TXIE UCB0RXIE UCA0TXIE UCA0RXIE rw-0 rw-0 rw-0 rw-0 UCA0RXIE USCI_A0 receive-interrupt enable UCA0TXIE USCI_A0 transmit-interrupt enable UCB0RXIE USCI_B0 receive-interrupt enable UCB0TXIE USCI_B0 transmit-interrupt enable Table 8. Interrupt Flag Register 1 Address 7 6 5 4 3 2 1 0 02h NMIIFG RSTIFG PORIFG OFIFG WDTIFG rw-0 rw-(0) rw-(1) rw-1 rw-(0) WDTIFG Set on watchdog timer overflow (in watchdog mode) or security key violation. Reset on VCC power-up or a reset condition at RST/NMI pin in reset mode. OFIFG Flag set on oscillator fault RSTIFG External reset interrupt flag. Set on a reset condition at RST/NMI pin in reset mode. Reset on VCC power up. PORIFG Power-on reset interrupt flag. Set on VCC power up. NMIIFG Set via RST/NMI pin Table 9. Interrupt Flag Register 2 Address 7 6 5 4 3 2 1 0 03h UCB0TXIFG UCB0RXIFG UCA0TXIFG UCA0RXIFG rw-1 rw-0 rw-1 rw-0 UCA0RXIFG USCI_A0 receive-interrupt flag UCA0TXIFG USCI_A0 transmit-interrupt flag UCB0RXIFG USCI_B0 receive-interrupt flag UCB0TXIFG USCI_B0 transmit-interrupt flag 10 Copyright © 2007–2011, Texas Instruments Incorporated |
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