Rainbow Electronics MAX6871 - Manual (Page 8)

MAX6870/MAX6871
EEPROM-Programmable Hex/Quad
Power-Supply Sequencers/Supervisors with ADC
8 _______________________________________________________________________________________
Pin Description
PIN
MAX6870 MAX6871
NAME FUNCTION
1 3 PO2
Programmable Output 2. Configurable, active-high, active-low, open-drain, weak pullup, or
charge-pump output. PO2 pulls low with a 10µA internal current sink for +1V < V
ABP < V UVLO .
PO2 assumes its programmed conditional output state when ABP exceeds UVLO.
2 5 PO3
Programmable Output 3. Configurable, active-high, active-low, open-drain, weak pullup
(MAX6870), push-pull (MAX6871), or charge-pump (MAX6870) output. PO3 pulls low with a
10µA internal current sink for +1V < V
ABP < V UVLO . PO3 assumes its programmed conditional
output state when ABP exceeds UVLO.
3 6 PO4
Programmable Output 4. Configurable, active-high, active-low, open-drain, weak pullup
(MAX6870), push-pull (MAX6871), or charge-pump (MAX6870) output. PO4 pulls low with a
10µA internal current sink for +1V < V
ABP < V UVLO . PO4 assumes its programmed conditional
output state when ABP exceeds UVLO.
4 4 GND Ground
5 7 PO5
Programmable Output 5. Configurable, active-high, active-low, open-drain, weak pullup, or
push-pull output. PO5 pulls low with a 10µA internal current sink for +1V < V
ABP < V UVLO . PO5
assumes its programmed conditional output state when ABP exceeds UVLO.
6 — PO6
Programmable Output 6. Configurable, active-high, active-low, open-drain, weak pullup, or
push-pull output. PO6 pulls low with a 10µA internal current sink for +1V < V
ABP < V UVLO . PO6
assumes its programmed conditional output state when ABP exceeds UVLO.
7 — PO7
Programmable Output 7. Configurable, active-high, active-low, open-drain, weak pullup, or
push-pull output. PO7 pulls low with a 10µA internal current sink for +1V < V
ABP < V UVLO . PO7
assumes its programmed conditional output state when ABP exceeds UVLO.
8 — PO8
Programmable Output 8. Configurable, active-high, active-low, open-drain, weak pullup, or
push-pull output. PO8 pulls low with a 10µA internal current sink for +1V < V
ABP
< V
UVLO
.
PO8 assumes its programmed conditional output state when ABP exceeds UVLO.
9, 10
1, 8, 9, 10,
25, 26, 32
N.C. No Connection. Not internally connected.
11 11 MARGIN
Margin Input. Configure MARGIN to either assert PO_ into a programmed state or to hold PO_
in its existing state when driving MARGIN low. See Table 8. Leave MARGIN unconnected or
connect to DBP if unused. MARGIN overrides MR if both assert at the same time. MARGIN is
internally pulled up to DBP through a 10µA current source.
12 12 MR
Manual Reset Input. Configure MR to either assert PO_ into a programmed state or to have no
effect on PO_ when driving MR low. See Table 7. Leave MR unconnected or connect to DBP if
unused. MR is internally pulled up to DBP through a 10µA current source.
13 13 SDA Serial Data Input/Output (Open-Drain). SDA requires an external pullup resistor.
14 14 SCL Serial Clock Input. SCL requires an external pullup resistor.
15 15 A0
Address Input 0. Address inputs allow up to four MAX6870/MAX6871 connections on one
common bus. Connect A0 to GND or to the serial interface power supply.
16 16 A1
Address Input 1. Address inputs allow up to four MAX6870/MAX6871 connections on one
common bus. Connect A1 to GND or to the serial interface power supply.