DSPIC33FJ64GS608-E/PT Microchip Technology, DSPIC33FJ64GS608-E/PT Datasheet - Page 330
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DSPIC33FJ64GS608-E/PT
Manufacturer Part Number
DSPIC33FJ64GS608-E/PT
Description
MCU/DSP 16BIT 64KB FLASH 80TQFP
Manufacturer
Microchip Technology
Series
dsPIC™ 33Fr
Datasheet
1.DSPIC33FJ32GS406-IPT.pdf
(418 pages)
Specifications of DSPIC33FJ64GS608-E/PT
Program Memory Type
FLASH
Program Memory Size
64KB (64K x 8)
Package / Case
80-TFQFP
Core Processor
dsPIC
Core Size
16-Bit
Speed
40 MIPs
Connectivity
CAN, I²C, IrDA, LIN, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, QEI, POR, PWM, WDT
Number Of I /o
74
Ram Size
9K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 18x10b, D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Product
DSCs
Data Bus Width
16 bit
Processor Series
DSPIC33F
Core
dsPIC
Numeric And Arithmetic Format
Fixed-Point or Floating-Point
Instruction Set Architecture
Harvard
Device Million Instructions Per Second
40 MIPs
Maximum Clock Frequency
120 MHz
Number Of Programmable I/os
74
Data Ram Size
4 KB
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52713-733, 52714-737, 53276-922, EWDSPIC
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, DM240001, DV164033
Interface Type
I2C, SPI, UART
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 18 Channel
On-chip Dac
10 bit, 4 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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dsPIC33FJ32GS406/606/608/610 and dsPIC33FJ64GS406/606/608/610
23.3
This module provides a means for the SMPS dsPIC
DSC devices to monitor voltage and currents in a
power conversion application. The ability to detect
transient conditions and stimulate the dsPIC DSC
processor and/or peripherals, without requiring the
processor and ADC to constantly monitor voltages or
currents, frees the dsPIC DSC to perform other tasks.
The comparator module has a high-speed comparator
and an associated 10-bit DAC that provides a
programmable reference voltage to the inverting input
of the comparator. The polarity of the comparator out-
put is user-programmable. The output of the module
can be used in the following modes:
• Generate an Interrupt
• Trigger an ADC Sample and Convert Process
• Truncate the PWM Signal (current limit)
• Truncate the PWM Period (current minimum)
• Disable the PWM Outputs (Fault latch)
The output of the comparator module may be used in
multiple modes at the same time, such as: (1)
generate an interrupt, (2) have the ADC take a sample
and convert it, and (3) truncate the PWM output in
response to a voltage being detected beyond its
expected value.
The comparator module can also be used to wake-up
the system from Sleep or Idle mode when the analog
input voltage exceeds the programmed threshold
voltage.
23.4
The range of the DAC is controlled via an analog
multiplexer that selects either AV
1% reference, or an external reference source,
EXTREF. The full range of the DAC (AV
typically be used when the chosen input source pin is
shared with the ADC. The reduced range option
(INTREF) will likely be used when monitoring current
levels using a current sense resistor. Usually, the
measured voltages in such applications are small
(<1.25V); therefore the option of using a reduced
reference range for the comparator extends the
available DAC resolution in these applications. The
use of an external reference enables the user to
connect to a reference that better suits their
application.
DACOUT, shown in Figure 23-1, can only be
associated with a single comparator at a given time.
DS70591C-page 330
Note:
Module Applications
DAC
It should be ensured in software that
multiple DACOE bits are not set. The
output on the DACOUT pin will be indeter-
minate if multiple comparators enable the
DAC output.
DD
/2, internal 1.2V,
DD
/2) will
Preliminary
23.5
If the comparator module is enabled and a pin has
been selected as the source for the comparator, then
the chosen I/O pad must disable the digital input buffer
associated with the pad to prevent excessive currents
in the digital buffer due to analog input voltages.
23.6
The CMPCONx register (see Register 23-1) provides
the control logic that configures the comparator
module. The digital logic provides a glitch filter for the
comparator output to mask transient signals in less
than two instruction cycles. In Sleep or Idle mode, the
glitch filter is bypassed to enable an asynchronous
path from the comparator to the interrupt controller.
This asynchronous path can be used to wake-up the
processor from Sleep or Idle mode.
The comparator can be disabled while in Idle mode if
the CMPSIDL bit is set. If a device has multiple
comparators, if any CMPSIDL bit is set, then the entire
group of comparators will be disabled while in Idle
mode. This behavior reduces complexity in the design
of the clock control logic for this module.
The digital logic also provides a one T
generator for triggering the ADC and generating
interrupt requests.
The CMPDACx (see Register 23-2) register provides
the digital input value to the reference DAC.
If the module is disabled, the DAC and comparator are
disabled to reduce power consumption.
23.7
The comparator has a limitation for the input Common
Mode Range (CMR) of (AV
means that both inputs should not exceed this range.
As long as one of the inputs is within the Common
Mode Range, the comparator output will be correct.
However, any input exceeding the CMR limitation will
cause the comparator input to be saturated.
If both inputs exceed the CMR, the comparator output
will be indeterminate.
23.8
The DAC has a limitation for the maximum reference
voltage input of (AV
reference voltage input should not exceed this value or
the reference DAC output will become indeterminate.
23.9
The comparator module is controlled by the following
registers:
• CMPCONx: Comparator Control Register
• CMPDACx: Comparator DAC Control Register
Interaction with I/O Buffers
Digital Logic
Comparator Input Range
DAC Output Range
Comparator Registers
DD
2010 Microchip Technology Inc.
– 1.6) volts. An external
DD
– 1.5V), typical. This
CY
width pulse
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