AFE4110 datasheet(24/68 Pages) TI

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RST/NMI/

SVMOUT

Brownout

Circuit

& Delay

RSTNMI

clr

Reset

Logic

SWBOR

BOR

POR

PUC

Reset-

signals

and

violations

Interrupt

signals

maskable/

unmaskable

Interrupt

Logic

nmi

CPU

irq

SVMOE

fromSVMlogic

SVMPD

PortsOn

SVMPO

set

SVSEN

SWPOR

AFE4110

SLLSE48

– JANUARY 2012

www.ti.com

Watchdog Timer (WDT_A)

The primary function of the watchdog timer (WDT_A) module is to perform a controlled system restart after a

software problem occurs. If the selected time interval expires, a system reset is generated. If the watchdog

function is not needed in an application, the module can be configured as an interval timer and can generate

interrupts at selected time intervals. For a complete description of WDT_A, see the Watchdog Timer (WDT_A)

section of the MSP430x09x Family Users Guide (SLAU321).

Table 5. WDT_A Signal Connections

DEVICE CLOCK SIGNAL

MODULE CLOCK SIGNAL

ACLK

SMCLK

LF-OSC-CLK

VLOCLK

HF-OSC-CLK

X-CLK

Compact System Module (C-SYS)

The Compact SYS module handles many of the system functions within the device. These include power on

reset and power up clear handling, NMI source selection and management, reset interrupt vector generators, as

well as, configuration management. It also includes a data exchange mechanism via JTAG called a JTAG

mailbox that can be used in the application. For a complete description of C-SYS, see the Compact System

chapter of the MSP430x09x Family Users Guide (SLAU321).

Reset/NMI/SVMOUT System

The Reset system of the MSP430x09x family features the function Reset input, Reset output, NMI input, SVM

output and SVS input.

Figure 2. Block Diagram of Reset/NMI/SVM and PortsOn logic

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