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MSP430F2122TRHBT Datasheet(PDF) 9 Page - Texas Instruments

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Part # MSP430F2122TRHBT
Description  MIXED SIGNAL MICROCONTROLLER
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

MSP430F2122TRHBT Datasheet(HTML) 9 Page - Texas Instruments

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SLAS578H
– NOVEMBER 2007 – REVISED JUNE 2011
Interrupt Vector Addresses
The interrupt vectors and the power-up starting address are located in the address range of 0xFFFF to 0xFFC0.
The vector contains the 16-bit address of the appropriate interrupt handler instruction sequence.
If the reset vector (located at address 0xFFFE) contains 0xFFFF (for example, if flash is not programmed), the
CPU goes into LPM4 immediately after power up.
Table 5. Interrupt Vector Addresses
INTERRUPT SOURCE
INTERRUPT FLAG
SYSTEM INTERRUPT
WORD ADDRESS
PRIORITY
Power-up
PORIFG
External reset
RSTIFG
Watchdog
WDTIFG
Reset
0xFFFE
31, highest
Flash key violation
KEYV(1)
PC out of range(2)
NMI
NMIIFG
(Non)maskable
Oscillator fault
OFIFG
(Non)maskable
0xFFFC
30
Flash memory access violation
ACCVIFG(1)(3)
(Non)maskable
Timer1_A2
TA1CCR0 CCIFG(4)
Maskable
0xFFFA
29
TA1CCR1 CCIFG,
Timer1_A2
Maskable
0xFFF8
28
TA1CTL TAIFG(1)(4)
Comparator_A+
CAIFG
Maskable
0xFFF6
27
Watchdog timer
WDTIFG
Maskable
0xFFF4
26
Timer0_A3
TA0CCR0 CCIFG(4)
Maskable
0xFFF2
25
TA0CCR1 CCIFG,
Timer0_A3
TA0CCR2 CCIFG,
Maskable
0xFFF0
24
TA0CTL TAIFG(1)(4)
USCI_A0/USCI_B0 receive
UCA0RXIFG,
Maskable
0xFFEE
23
UCB0RXIFG(1)(5)
USCI_B0 I2C status
USCI_A0/USCI_B0 transmit
UCA0TXIFG,
Maskable
0xFFEC
22
UCB0TXIFG(1)(6)
USCI_B0 I2C receive/transmit
ADC10
ADC10IFG(4)
Maskable
0xFFEA
21
0xFFE8
20
I/O port P2 (eight flags)
P2IFG.0 to P2IFG.7(1)(4)
Maskable
0xFFE6
19
I/O port P1 (eight flags)
P1IFG.0 to P1IFG.7(1)(4)
Maskable
0xFFE4
18
0xFFE2
17
0xFFE0
16
See (7)
0xFFDE
15
See (8)
0xFFDC to 0xFFC0
14 to 0, lowest
(1)
Multiple source flags
(2)
A reset is generated if the CPU tries to fetch instructions from within the module register memory address range (0x0000 to 0x01FF) or
from within unused address range.
(3)
(non)-maskable: the individual interrupt-enable bit can disable an interrupt event, but the general interrupt enable cannot.
Nonmaskable: neither the individual nor the general interrupt-enable bit will disable an interrupt event.
(4)
Interrupt flags are located in the module.
(5)
In SPI mode: UCB0RXIFG. In I2C mode: UCALIFG, UCNACKIFG, ICSTTIFG, UCSTPIFG
(6)
In UART/SPI mode: UCB0TXIFG. In I2C mode: UCB0RXIFG, UCB0TXIFG
(7)
This location is used as bootstrap loader security key (BSLSKEY).
A 0xAA55 at this location disables the BSL completely.
A zero (0x0) disables the erasure of the flash if an invalid password is supplied.
(8)
The interrupt vectors at addresses 0xFFDC to 0xFFC0 are not used in this device and can be used for regular program code if
necessary.
Copyright
© 2007–2011, Texas Instruments Incorporated
9


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