MAX16065ETM+ Maxim Integrated Products, MAX16065ETM+ Datasheet - Page 35

• Manufacturer Part Number: MAX16065ETM+
• Description: IC SYSTEM MANAGER 12CH 48-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX16065ETM+

• Applications: Power Supply Monitor, Sequencer
• Voltage - Supply: 2.8 V ~ 14 V
• Current - Supply: 4.5mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFN Exposed Pad
• Number Of Voltages Monitored: 12
• Undervoltage Threshold: 2.7 V
• Manual Reset: Resettable
• Watchdog: Yes
• Battery Backup Switching: No
• Power-up Reset Delay (typ): 200 us
• Supply Voltage (max): 14 V
• Supply Voltage (min): 2.8 V
• Supply Current (typ): 10 mA
• Maximum Power Dissipation: 2222 mW
• Mounting Style: SMD/SMT
• Maximum Operating Temperature: + 85 C
• Chip Enable Signals: No
• Internal Hysteresis: Yes
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Input: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The watchdog timer operates together with or indepen-
dently of the MAX16065/MAX16066. When operating in
dependent mode, the watchdog is not activated until the
sequencing is complete and RESET is deasserted. When
operating in independent mode, the watchdog timer is
independent of the sequencing operation and activates
immediately after V
the boot phase is complete. Set r73h[4] to ‘0’ to config-
ure the watchdog in dependent mode. Set r73h[4] to ‘1’
to configure the watchdog in independent mode. See
Table 24 for more information on configuring the watch-
dog timer in dependent or independent mode.
Table
Figure
Open-Drain Active-Low Configuration
12-Channel/8-Channel, Flash-Configurable System
REGISTER
ADDRESS
6. RESET and EN_OUT_ During Power-Up, EN_OUT_ in
22. EN_OUT_ GPIO_ State Registers
1Fh
34h
Managers with Nonvolatile Fault Registers
______________________________________________________________________________________
CC
20ms/div
exceeds the UVLO threshold and
ADDRESS
FLASH
234h
—
MAX16065 fig06
Watchdog Timer
V
2V/div
0V
RESET
2V/div
0V
EN_OUT_
2V/div
0V
CC
BIT RANGE
[0]
[1]
[2]
[3]
[0]
[1]
[2]
[3]
Figure
Push-Pull Active-High Configuration
Use the watchdog timer to monitor FP activity in two
modes. Flexible timeout architecture provides an adjust-
able watchdog startup delay of up to 300s, allowing com-
plicated systems to complete lengthy boot-up routines.
An adjustable watchdog timeout allows the supervisor to
provide quick alerts when processor activity fails. After
each reset event (V
above UVLO, software reboot, manual reset (MR), EN
input going low then high, or watchdog reset) and once
sequencing is complete, the watchdog startup delay
provides an extended time for the system to power up
and fully initialize all FP and system components before
assuming responsibility for routine watchdog updates.
Set r76h[6:4] to a value other than ‘000’ to enable the
watchdog startup delay. Set r76h[6:4] to ‘000’ to disable
the watchdog startup delay.
EN_OUT9 input state
EN_OUT10 input state
EN_OUT11 input state
EN_OUT12 input state
1 = Assert EN_OUT9
1 = Assert EN_OUT10
1 = Assert EN_OUT11
1 = Assert EN_OUT12
7. RESET and EN_OUT_ During Power-Up, EN_OUT_ in
HIGH-Z
Dependent Watchdog Timer Operation
UVLO
ASSERTED
CC
LOW
DESCRIPTION
10ms/div
drops below UVLO then returns
MAX16065 fig07
V
2V/div
0V
RESET
2V/div
0V
EN_OUT_
2V/div
0V
CC
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