STM706T Datasheet, PDF (4/26 Pages) STMicroelectronics – 3V Supervisor

STM706T/S/R; STM706P; STM708T/S/R
SUMMARY DESCRIPTION
The STM70x Supervisors are self-contained de-
vices which provide microprocessor supervisory
functions. A precision voltage reference and com-
parator monitors the V_CC input for an out-of-toler-
ance condition. When an invalid V_CC condition
occurs, the reset output (RST) is forced low (or
high in the case of RST).
These devices also offer a watchdog timer (except
for STM708T/S/R) as well as a power-fail compar-
ator to provide the system with an early warning of
impending power failure.
The STM706P is identical to the STM706R, except
its reset output is active-high.
These devices are available in a standard 8-pin
SOIC package or a space-saving 8-pin TSSOP
package.
Figure 2. Logic Diagram (STM706T/S/R and
STM706P)
V_CC
WDI
MR
PFI
STM706T/S/R,
STM706P
WDO
RST (RST)⁽¹⁾
PFO
V_SS
AI08841
Note: 1. For STM706P only.
Figure 3. Logic Diagram (STM708T/S/R)
V_CC
Table 2. Signal Names
MR
Push-button Reset Input
WDI
Watchdog Input
WDO
Watchdog Output
RST
Active-Low Reset Output
RST⁽¹⁾
Active-High Reset Output
V_CC
Supply Voltage
PFI
Power-fail Input
PFO
Power-fail Output
V_SS
Ground
NC
No Connect
Note: 1. For STM706P and STM708T/S/R only.
RST
MR
STM708T/S/R
RST
PFI
PFO
V_SS
AI08842
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