®
X40020, X40021
Data Sheet May 17, 2006 FN8112.
1
Dual
Voltage Monitor with Integrated CPU Supervisor and System Battery Switch
FEATURES • Dual
voltage detection and reset assertion —Three standard reset threshold settings (4.
6V/2.
9V, 4.
6V/2.
6V, 2.
9V/1.
6V) —VTRIP2 programmable down to 0.
9V —Adjust low
voltage reset threshold
voltages using special programming sequence —Reset signal valid to VCC = 1V —Monitor two
voltages or detect power fail • Battery switch backup • VOUT: 5mA to 50mA from VCC; 250µA from VBATT • Fault detection register • Selectable power-on reset timeout (0.
05s, 0.
2s, 0.
4s, 0.
8s) • Selectable watchdog timer interval (25ms, 200ms, 1.
4s, off) • Debounced manual reset input...