dsPIC33FJ32MC104-I/PT Microchip Technology, dsPIC33FJ32MC104-I/PT Datasheet - Page 253

• Manufacturer Part Number: dsPIC33FJ32MC104-I/PT
• Description: Digital Signal Processors & Controllers - DSP, DSC 16bit Mtr Cnt Fam 16 MIPS 32KBFLSH 2KBRAM
• Manufacturer: Microchip Technology
• Type: dsPIC33FJ32(GP/MC)101/102/104r

Specifications of dsPIC33FJ32MC104-I/PT

• Rohs: yes
• Core: dsPIC33F
• Data Bus Width: 16 bit
• Program Memory Size: 32 KB
• Data Ram Size: 2 KB
• Maximum Clock Frequency: 7.37 MHz, 32 kHz
• Number Of Programmable I/os: 35
• Number Of Timers: 5 x 16-bit, 2 x 32-bit
• Device Million Instructions Per Second: 16 MIPs
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 125 C
• Package / Case: TQFP-44
• Mounting Style: SMD/SMT
• Family / Core: dsPIC33FJ32(GP/MC)101/102/104
• Interface Type: I2C, SPI, UART
• Minimum Operating Temperature: - 40 C
• On-chip Adc: Yes
• Product: DSPs
• Program Memory Type: Flash
• Supply Current: 10 mA

22.0
The Charge Time Measurement Unit (CTMU) is a flex-
ible analog 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 200 ps
• Accurate current source suitable for capacitive
• On-chip temperature measurement using a
 2011-2012 Microchip Technology Inc.
measurement
built-in diode
Note 1: This data sheet summarizes the features
dsPIC33FJ16(GP/MC)101/102 AND dsPIC33FJ32(GP/MC)101/102/104
2: Some registers and associated bits
CHARGE TIME
MEASUREMENT UNIT (CTMU)
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.
of
and dsPIC33FJ32(GP/MC)101/102/104
device families of devices. It is not
intended to be a comprehensive reference
source. To complement the information in
this data sheet, refer to Section 55.
“Charge Time Measurement Unit
(CTMU)”
“dsPIC33F/PIC24H
Manual”, which is available on the
Microchip web site (www.microchip.com).
the
dsPIC33FJ16(GP/MC)101/102
(DS70635)
Family
Reference
in
the
in
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
capacitive-based sensors. The CTMU is controlled
through three registers: CTMUCON1, CTMUCON2
and CTMUICON. CTMUCON1 enables the module,
the edge delay generation, sequencing of edges, and
controls the current source and the output trigger.
CTMUCON2 controls the edge source selection, edge
source polarity selection and edge sampling mode. The
CTMUICON register controls the selection and trim of
the current source.
Figure 22-1
shows the CTMU block diagram.
DS70652E-page 253