The MAX6965 I²C-compatible serial interfaced peripheral
provides microprocessors with nine additional output
ports. Each output is an open-drain current-sinking
output rated to 50mA at 7V. All outputs are capable of
driving LEDs, or providing logic outputs with external
resistive pullup up to 7V.
Eight-bit PWM current control is also integrated. Four of
the bits are global control and apply to all LED outputs
to provide coarse adjustment of current from fully off to
fully on with 14 intensity steps. Additionally each output
then has an individual 4-bit control, which further
divides the globally set current into 16 more steps.
Alternatively, the current control can be configured as a
single 8-bit control that sets all outputs at once.
Each output has independent blink timing with two blink
phases. LEDs can be individually set to be either on or off
during either blink phase, or to ignore the blink control.
The blink period is controlled by an external clock (up to
1kHz) on BLINK or by a register. The BLINK input can also
be used as a logic control to turn the LEDs on and off, or
as a general-purpose input (GPI).
The MAX6965 supports hot insertion. The SDA, SCL,
active-low RST, BLINK, and the slave address input AD0 remain
high impedance in power-down (V+ = 0V) with up to 6V
asserted upon them. The output ports remain high
impedance with up to 8V asserted upon them.
The MAX6965 is controlled through a 2-wire I²C serial
interface, and can be configured to one of four I²C
addresses.
Key Features
Applications/Uses
400kbps, 2-Wire Serial Interface, 5.5V Tolerant
2V to 3.6V Operation
Overall 8-Bit PWM LED Intensity Control
Global 16-Step Intensity Control
Plus Individual 16-Step Intensity Controls
Two-Phase LED Blinking
High Port Output Current—Each Port 50mA (max)
RST-bar Input Clears Serial Interface and Restores Power-Up Default State
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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