MAX791CPE+ Maxim Integrated Products, MAX791CPE+ Datasheet - Page 17

• Manufacturer Part Number: MAX791CPE+
• Description: IC MPU SUPERVISORY CIRCUIT 16DIP
• Manufacturer: Maxim Integrated Products
• Type: Battery Backup Circuitr

Specifications of MAX791CPE+

• Number Of Voltages Monitored: 1
• Output: Push-Pull, Totem Pole
• Reset: Active Low
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 4.65V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.300", 7.62mm)
• Monitored Voltage: 4.65 V
• Undervoltage Threshold: 4.5 V
• Overvoltage Threshold: 4.75 V
• Manual Reset: Resettable
• Watchdog: Yes
• Battery Backup Switching: Yes
• Power-up Reset Delay (typ): 280 ms
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 0 V
• Supply Current (typ): 150 uA
• Maximum Power Dissipation: 842 mW
• Mounting Style: Through Hole
• Maximum Operating Temperature: + 70 C
• Chip Enable Signals: Yes
• Minimum Operating Temperature: 0 C
• Output Type: Active Low or Open Drain or Push-Pull
• Power Fail Detection: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 17. Watchdog Flow Diagram
______________________________________________________________________________________
OR PROGRAM LOOP,
SUBROUTINE
SET WDI
RETURN
START
HIGH
LOW
WDI
END
SET
Microprocessor Supervisory Circuit
TRANSISTOR COUNT: 729
SUBSTRATE CONNECTED TO V
BATT ON
GND
PFO
V
CC
PFI
SWT
V
OUT
(1.778mm)
MR LOWLINE
0.07"
VBATT
Chip Topography
WDPO
OUT
RESET
WDO
CE IN
WDI
CE
OUT
(2.794mm)
0.11"
17