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| MAX16016_0812 Datasheet, PDF (18/21 Pages) Maxim Integrated Products – Low-Power μP Supervisory Circuits with Battery-Backup Circuit and Chip-Enable Gating | |||
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Low-Power µP Supervisory Circuits with
Battery-Backup Circuit and Chip-Enable Gating
BATT
VCC
MAX16020L
BATT_TEST
Replacing the Backup Battery
When VCC is above VTH, the backup power source can
be removed without danger of triggering a reset pulse.
The device does not enter battery-backup mode when
VCC stays above the reset threshold voltage.
Negative-Going VCC Transients
RLOAD
The MAX16016/MAX16020/MAX16021 are relatively
immune to short duration, negative going VCC tran-
sients. Resetting the µP when VCC experiences only
small glitches is usually not desirable. A 0.1µF bypass
capacitor mounted close to VCC provides additional
transient immunity.
Figure 6. Adjustable BATT_TEST Load
18 ______________________________________________________________________________________
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