MAX6745XKVD3+T Maxim Integrated, MAX6745XKVD3+T Datasheet - Page 24

• Manufacturer Part Number: MAX6745XKVD3+T
• Description: Supervisory Circuits MCU Supervisor
• Manufacturer: Maxim Integrated
• Series: MAX6736, MAX6737, MAX6738, MAX6739, MAX6740, MAX6741, MAX6742, MAX6743, MAX6744, MAX6745r

Specifications of MAX6745XKVD3+T

• Rohs: yes
• Number Of Voltages Monitored: 2
• Monitored Voltage: 1.8 V to 5 V, 0.9 V to 3.3 V
• Undervoltage Threshold: 1.53 V, 0.765 V
• Overvoltage Threshold: 1.62 V, 0.81 V
• Output Type: Active Low, Push-Pull
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Power-up Reset Delay (typ): 225 ms
• Supply Voltage - Max: 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SC-70
• Chip Enable Signals: No
• Maximum Power Dissipation: 247 mW
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: Yes
• Supply Current (typ): 5 uA, 10 uA
• Supply Voltage - Min: 1 V

MAXQ613
16-Bit Microcontroller with Infrared Module
Table 5. Stop Mode Power-Fail Detection States with Power-Fail Monitor Enabled
24
Figure 12. Stop Mode Power-Fail Detection States with Power-Fail Monitor Enabled
STATE
A
B
C
D
E
F
INTERNAL RESET
(ACTIVE HIGH)
POWER-FAIL
(Periodically)
V
V
V
PFW
POR
RST
STOP
On
On
On
On
On
Off
V
DD
A
REGULATOR
INTERNAL
B
Off
Off
On
Off
Off
Off
t < t
PFW
OSCILLATOR
t ≥ t
CRYSTAL
PFW
C
Off
Off
On
Off
Off
Off
RETENTION
SRAM
Yes
Yes
Yes
Yes
Yes
—
Application enters stop mode.
V
CPU in stop mode.
Power drop too short.
Power-fail not detected.
V
Power-fail warning detected.
Turn on regulator and crystal.
Crystal warmup time, t
Exit stop mode.
Application enters stop mode.
V
CPU in stop mode.
V
Power-fail detected.
CPU goes into reset.
Power-fail monitor turns on periodically.
V
Device held in reset. No operation allowed.
DD
RST
DD
POR
DD
> V
> V
< V
< V
D
< V
RST
RST
POR
DD
DD
.
.
.
< V
< V
COMMENTS
PFW
t ≥ t
RST
PFW
.
.
XTAL_RDY
E
Maxim Integrated
F
.