Features: RST OR RST OUTPUTS NVRAM SUPERVISOR FOR EXTERNAL LPSRAM CHIP-ENABLE GATING (STM795 only) FOR EXTERNAL LPSRAM (7ns max PROP DELAY) MANUAL (PUSH-BUTTON) RESET INPUT 200ms (TYP) trec WATCHDOG TIMER - 1.6sec (TYP) AUTOMATIC BATTERY SWITCHOVER LOW BATTERY SUPPLY CURRENT - 0.4A (TYP) POWER-FA...
STM704: Features: RST OR RST OUTPUTS NVRAM SUPERVISOR FOR EXTERNAL LPSRAM CHIP-ENABLE GATING (STM795 only) FOR EXTERNAL LPSRAM (7ns max PROP DELAY) MANUAL (PUSH-BUTTON) RESET INPUT 200ms (TYP) trec WATCHDO...
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Symbol | Parameter | Value | Unit |
TSTG | Storage Temperature (VCC Off) | 55 to 150 | |
TSLD (1) | Lead Solder Temperature for 10 seconds | 260 | |
VIO | Input or Output Voltage | 0.3 to VCC +0.3 | V |
VCC/VBAT | Supply Voltage | 0.3 to 6.0 | V |
IO | Output Current | 20 | mA |
PD | Power Dissipation | 320 | mW |
The STM690/STM704/795/802/804/805/806 Supervisors are self-contained devices which provide microprocessor supervisory functions with the ability to non-volatize and write-protect external LPSRAM. A precision voltage reference and comparator monitors the VCC input for an out-of-tolerance condition. When an invalid VCC 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 STM704/795/806) as well as a power-fail comparator (except for STM795) to provide the system with an early warning of impending power failure.
These STM704 are available in a standard 8-pin SOIC package or a space-saving 8-pin TSSOP package.