EVAL-AD5100EBZ View Datasheet(PDF) - Analog Devices

Part Name

Description

MFG CO.

EVAL-AD5100EBZ

System Management IC with Factory Programmed Quad Voltage Monitoring and Supervisory Functions

Analog Devices 

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AD5100

Floating WDI Input

If the WDI pin is floating, the watchdog function is disabled by

default. However, floating watchdog can be enabled in the RESET

configuration register such that a broken WDI connection or

any unusual condition that makes WDI float triggers the reset.

• Register 0x0D[3] = 0: floating WDI input does not activate

RESET (Default)

• Register 0x0D[3] = 1: floating WDI input activates RESET

This feature is fixed in OTP memory. Enabling or disabling the

floating WDI feature can be changed dynamically, using the

OTP overridden function is selected.

MANUAL RESET INPUT

Manual reset (MR) is an active low input to the AD5100 and

has an internal pull-up resistor to V3MON. If the input signal on

the MR pin goes low, RESET is activated. MR can be driven

from a CMOS logic signal.

The MR and RESET timing diagrams are shown in Figure 15.

Note that RESET is activated after tMR_DELAY and is held for

tRS_HOLD after the MR signal has gone high again.

MR has the highest priority in triggering the RESET over any

other monitoring inputs.

MR

< tMR_GLITCH

tMR

tMR_DELAY

tRS_HOLD*

RESET

* = PROGRAMMABLE

Figure 15. Manual Reset (MR) Timing Diagram

Rev. A | Page 18 of 36

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