MAX6884ETP MAXIM [Maxim Integrated Products], MAX6884ETP Datasheet - Page 19

• Manufacturer Part Number: MAX6884ETP
• Description: EEPROM-Programmable, Hex Power-Supply Supervisory Circuits
• Manufacturer: MAXIM [Maxim Integrated Products]

Program UV/OV to depend on MR, RESET, or any pro-
grammable secondary voltage detector input (see Table
7). As an example, UV/OV may depend on the IN1 sec-
ondary overvoltage threshold, MR, and RESET. Write 1’s
to R13h[2:0] and R0Eh[1] to configure as indicated. IN1
must be below the overvoltage threshold, MR must be
high, and RESET must be deasserted to be a logic “1,”
Table
REGISTER
ADDRESS
13h
14h
7. Programmable UV/OV Options
ADDRESS
MEMORY
EEPROM
93h
94h
______________________________________________________________________________________
BIT RANGE
[3:1]
[7:4]
[0]
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[0]
Power-Supply Supervisory Circuits
1 = UV/OV Assertion Depends on MR
0 = UV/OV Assertion Does Not Depend on MR
1 = UV/OV Assertion Depends on RESET
0 = UV/OV Assertion Does Not Depend on RESET
1 = UV/OV Assertion Depends on IN1 Secondary Undervoltage/Overvoltage Threshold
0 = UV/OV Assertion Does Not Depend on IN1 Secondary Undervoltage/Overvoltage
Threshold
1 = UV/OV Assertion Depends on IN2 Secondary Undervoltage/Overvoltage Threshold
0 = UV/OV Assertion Does Not Depend on IN2 Secondary Undervoltage/Overvoltage
Threshold
1 = UV/OV Assertion Depends on IN3 Secondary Undervoltage/Overvoltage Threshold
0 = UV/OV Assertion Does Not Depend on IN3 Secondary Undervoltage/Overvoltage
Threshold
1 = UV/OV Assertion Depends on IN4 Secondary Undervoltage/Overvoltage Threshold
0 = UV/OV Assertion Does Not Depend on IN4 Secondary Undervoltage/Overvoltage
Threshold
1 = UV/OV Assertion Depends on IN5 Secondary Undervoltage/Overvoltage Threshold
0 = UV/OV Assertion Does Not Depend on IN5 Secondary Undervoltage/Overvoltage
Threshold
1 = UV/OV Assertion Depends on IN6 Secondary Undervoltage/Overvoltage Threshold
0 = UV/OV Assertion Does Not Depend on IN6 Secondary Undervoltage/Overvoltage
Threshold
UV/OV Output Type
1 = Open Drain
0 = Weak Pullup
UV/OV Deassertion Time Delay
000 = 25µs
001 = 1.56ms
010 = 6.25ms
011 = 25ms
100 = 50ms
101 = 200ms
110 = 400ms
111 = 1600ms
Unused
EEPROM-Programmable, Hex
UV / OV
then UV/OV deasserts. The logic state of UV/OV, in this
example, is equivalent to the logical statement:
UV/OV remains low for its programmed time delay (t
after all assertion-causing conditions are removed.
Program time delays for UV/OV from 25µs to 1600ms
(see
pullup through bit R14h[0].
Table
DESCRIPTION
7). Configure UV/OV for open drain or weak
IN1 · MR · RESET
UP
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