MAX32600 User’s Guide
Introduction
2.7 Digital Peripherals
2.6.4
8-Bit Voltage Output DACs
The
MAX32600
includes two 8-bit voltage output DACs (DAC2, DAC3) which output single-ended voltages. The reference used by these DACs is selectable between
the DAC reference level and the ADC reference level.
Each DAC instance includes PMU channel access to allow output values to be loaded to the DAC directly from memory.
2.6.5
Uncommitted Op Amps with Comparator Mode
The
MAX32600
contains four uncommitted operational amplifiers. Any unused op amp should not be enabled. Each op amp may be switched between amplifier and
comparator mode under software control.
Each op amp contains an integrated internal switch that can be used to short the negative/inverting input pin to the output pin of the op amp under software control,
putting the op amp in a voltage follower mode. In this configuration, the op amp can be used as an output buffer for any of the four DAC outputs.
Any of the four DAC outputs may optionally be internally connected to the inverting or noninverting inputs of one or more of the four op amps, under software control.
2.6.6
Uncommitted SPST Analog Switches
The device contains four uncommitted SPST analog switches which can be opened and closed under software or pulse train control. All SPST switches are open by
default following any reset or power-on reset.
The SPST switches support input voltages from ground to V
AVDD
.
2.6.7
Temperature Sensor
The device includes an internal temperature sensor which can be read using the ADC. The
MAX32600
also supports a mode for an external temperature sensor.
2.7
Digital Peripherals
2.7.1
GPIO Pins w/Interrupt and Wakeup Capability
The device includes up to eight GPIO ports with eight pins per port for a total of 64 GPIO pins. Pins may be multiplexed with digital peripheral functions and/or LCD
segment output lines. GPIO pins may be individually switched between GPIO and secondary/tertiary peripheral functions using the appropriate control registers.
All GPIO pins can be configured individually by firmware to act as external interrupt sources. All GPIO pins also have the option (which is separate from configuring
a GPIO pin to act as an external interrupt source) to be configured to provide wakeup source inputs to the Wakeup Interrupt Controller (WIC) to wake the device from
power-saving modes.
Rev.1.3 April 2015
Maxim Integrated
Page 17
Содержание MAX32600
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