MA330028 Microchip Technology, MA330028 Datasheet - Page 313

• Manufacturer Part Number: MA330028
• Description: Daughter Cards & OEM Boards dsPIC33EP64MC504 PIM
• Manufacturer: Microchip Technology

Specifications of MA330028

• Rohs: yes
• Product: Daughter Cards
• Core: dsPIC
• Description/function: Plug-in-module with dsPIC33EP64MC504 device for use with DM330021 and DM330023 motor control development board
• Interface Type: CAN, I2C, SPI
• Operating Supply Voltage: 3 to 3.6 V
• Tool Is For Evaluation Of: dsPIC33EP64MC504
• For Use With: DM330021, DM330023

22.0
FIGURE 22-1:
© 2011-2012 Microchip Technology Inc.
Note 1: This data sheet summarizes the fea-
2: Some registers and associated bits
CHARGE TIME
MEASUREMENT UNIT (CTMU)
CTED1
CTED2
Timer1
tures of the dsPIC33EPXXXGP50X,
dsPIC33EPXXXMC20X/50X,
PIC24EPXXXGP/MC20X
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to Section 33. “Charge
Time
(DS70661) in the “dsPIC33E/PIC24E
Family Reference Manual”, which is
available on the Microchip web site
(www.microchip.com).
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization”
this data sheet for device-specific register
and bit information.
CMP1
OC1
IC1
Measurement
CTMU TEMP
CTMU BLOCK DIAGRAM
Temperature
Current Control Selection
CTMU TEMP
CTMUI to ADC
CTMUP
No Connect
Control
Sensor
Logic
Edge
CTMU
Unit
family
(CTMU)”
EDG1STAT
EDG2STAT
for pulse generation
External capacitor
CTMUCON1 or CTMUCON2
CTMUI to ADC
and
Preliminary
CDelay
of
in
C1IN1-
Current Source
CTMUICON
Current
Control
TGEN
0
0
1
1
ITRIM<5:0>
IRNG<1:0>
The Charge Time Measurement Unit is a flexible ana-
log module that provides accurate differential time
measurement between pulse sources, as well as
asynchronous pulse generation. Its key features
include:
• Four edge input trigger sources
• Polarity control for each edge source
• Control of edge sequence
• Control of response to edges
• Precise time measurement resolution of 1 ns
• Accurate current source suitable for capacitive
• On-chip temperature measurement using a
Together with other on-chip analog modules, the CTMU
can be used to precisely measure time, measure
capacitance, measure relative changes in capacitance
or generate output pulses that are independent of the
system clock.
The CTMU module is ideal for interfacing with capaci-
tive-based sensors.The CTMU is controlled through
two
CTMUCON enables the module and controls edge
source selection, edge source polarity selection and
edge sequencing. The CTMUICON register controls
the selection and trim of the current source.
CTMUP
measurement
built-in diode
EDG1STAT = EDG2STAT
EDG1STAT ≠ EDG2STAT
EDG1STAT ≠ EDG2STAT
EDG1STAT = EDG2STAT
EDG1STAT, EDG2STAT
TGEN
registers:
CMP1
Generator
Control
CTMU
Logic
Pulse
CTMUCON
Analog-to-Digital
CTPLS
Trigger
and
DS70657E-page 313
CTMUICON.