CBM706P/706R/706S/706T/708R/708S/708T
OPERATION INSTRUCTION
FEATURES
GENERAL DESCRIPTION
Precision supply voltage monitor
2.63 V (CBM706P, CBM706R, CBM708R)
The CBM706P/ CBM706R/ CBM706S/
CBM706T and the CBM708R/ CBM708S /
CBM708T microprocessor supervisory circuits
are suitable for monitoring either 3V or 3.3V
power supplies.
2.93 V (CBM706S, CBM708S)
3.08 V (CBM706T, CBM708T)
100µA quiescent current
200ms reset pulse width
The CBM706P/ CBM706R/ CBM706S/
CBM706T provide power supply monitoring
circuitry that generate a reset output during
power-up, power-down, and brownout
conditions. The reset output remains
operational with VCC as low as 1V.
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Debounced manual reset input (MR)
Independent watchdog timer
1.6 sec timeout (CBM706P, CBM706R,
CBM706S, CBM706T)
Independent
watchdog
monitoring
Voltage monitor for power fail or low
battery warning
circuitry is also provided. This activates if the
watchdog input does not toggle within 1.6
sec.
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Guaranteed RESET valid with VCC = 1 V
Superior upgrade for ADM706P/R/S/T,
ADM708R/S/T
In addition, there is a 1.25V threshold
detector for a power fail warning, low battery
detection, or to monitor an additional power
APPLICATIONS
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supply. An active low debounced MR input is
also included.
Microprocessor systems
Computers
The CBM706R, CBM706S, and CBM706T
are identical except for the reset threshold
monitor levels, which are 2.63V, 2.93V, and
3.08V, respectively. The CBM706P is identical
to the CBM706R in that the reset threshold is
2.63V. It differs only in that it has an active
high reset output.
Controllers
Intelligent instruments
Critical microprocessor monitoring
Battery operated systems
Portable instruments
The CBM708R/ CBM708S/ CBM708T
provide
similar
functio-nality
as
the
CBM706R/CBM706S/CBM706T and only differ
in that a watchdog timer function is not
available. Instead, an active high reset output
(RESET) is provided in addition to the active
ꢀꢀꢀꢀꢀꢀꢀ
low (RESET) output.
All devices are available in narrow 8-lead
PDIP and 8-lead SOIC packages.
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