MAX32600 User’s Guide
Introduction
2.6 Analog Peripherals
user application. Two exceptions to this are the Destructive Security Bypass access key value and the Auto-Lock option value, which may be set by the user by
means of a special procedure even after access to the rest of the information block has been locked out.
Functions provided by the flash controller for use in normal operation include:
• Mass erase of main program flash array
• Page erase of one page in the main program flash array
• Write to one location (programmed 32-bits at a time) in the main program flash array
• Special one-time writes by the user to the DSB Access Key and/or the Auto-Lock option values in the information block
2.6
Analog Peripherals
2.6.1
16-Bit ADC with PGA
The
MAX32600
includes a 16-bit analog-to-digital converter (ADC) with a 16-channel analog input multiplexer, to allow selection of input from one of 16 input lines
(single-ended mode) or two of eight input pairs (differential mode). The differential mode supports fully differential signal inputs.
The front end PGA allows programmable gain settings of 1X, 2X, 4X, and 8X before the input sample is converted.
The ADC reference voltage is selectable between V
AVDD
and the dedicated ADC reference level. The ADC reference level can be set by software to one of four
output levels - 1.024V, 1.5V, 2.048V, and 2.5V - based on the 1.23V reference bandgap.
2.6.2
ADC/DAC Internal/External Reference and Programmable Output Buffers
Two programmable reference levels (one used by the ADC, one used by the DACs) are included, and each can be individually set to one of four output levels - 1.024V,
1.5V, 2.048V, and 2.5V.
An external reference can also be provided at the REFADJ pin; if this feature is used, the external reference voltage will be used in place of the 1.23V bandgap
output, and the programmable output levels for the ADC and DAC references will shift accordingly.
2.6.3
12-Bit Voltage Output DACs
The
MAX32600
includes two 12-bit voltage output DACs (DAC0, DAC1) 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.
Rev.1.3 April 2015
Maxim Integrated
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