MAX16067 Datasheet, PDF (17/47 Pages) Maxim Integrated Products – 6-Channel, Flash-Configurable System Manager with Nonvolatile Fault Registers

6-Channel, Flash-Configurable System Manager
with Nonvolatile Fault Registers
General-Purpose Inputs/Outputs
GPIO1–GPIO6 are programmable general-purpose
inputs/outputs. GPIO1–GPIO6 are configurable as a
manual reset input, a watchdog timer input and output,
logic inputs/outputs, and fault-dependent outputs. When
programmed as outputs, GPIOs are open-drain or push-
pull. See Tables 10 and 11 for more detailed information
on configuring GPIO1–GPIO6.
Table 10. GPIO_ Configuration Registers
When GPIO1–GPIO6 are configured as general-purpose
inputs/outputs, read values from the GPIO ports through
r1Eh and write values to GPIOs through r3Eh. Note that
r3Eh has a corresponding flash register, which pro-
grams the default state of a general purpose output. See
Table 12 for more information on reading and writing to
the GPIO.
REGISTER ADDRESS FLASH ADDRESS
3Fh
23Fh
40h
240h
BIT RANGE
[1:0]
[3:2]
[5:4]
[7:6]
[1:0]
[3:2]
[4]
[7:5]
DESCRIPTION
GPIO1 configuration
GPIO2 configuration
GPIO3 configuration
GPIO4 configuration
GPIO5 configuration
GPIO6 configuration
ARAEN bit
Not used
Table 11. GPIO_ Function Configuration Bits
GPIO1
00
Logic input
01
Logic output
(push-pull)
GPIO2
Logic input
Logic output
(push-pull)
GPIO3
Logic input
Logic output
(push-pull)
10
Logic output
(open drain)
Logic output
(open drain)
Logic output
(open drain)
11
ALERT (open drain) FAULT (open drain) MR input
GPIO4
Logic input
Logic output
(push-pull)
Logic output
(open drain)
WDI
GPIO5
Logic input
Logic output
(push-pull)
Logic output
(open drain)
WDO
(open drain)
GPIO6
Logic input
Logic output
(push-pull)
Logic output
(open drain)
EXTFAULT
(open drain)
Table 12. GPIO_ State Registers
REGISTER
ADDRESS
1Eh
3Eh
FLASH
ADDRESS
—
23Eh
BIT RANGE
[0]
[1]
[2]
[3]
[4]
[5]
[7:6]
[0]
[1]
[2]
[3]
[4]
[5]
[7:6]
GPIO1 input state
GPIO2 input state
GPIO3 input state
GPIO4 input state
GPIO5 input state
GPIO6 input state
Not used
GPIO1 output state
GPIO2 output state
GPIO3 output state
GPIO4 output state
GPIO5 output state
GPIO6 output state
Not used
DESCRIPTION
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