DSPIC33FJ64MC202-E/MM Microchip Technology, DSPIC33FJ64MC202-E/MM Datasheet - Page 163
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DSPIC33FJ64MC202-E/MM
Manufacturer Part Number
DSPIC33FJ64MC202-E/MM
Description
16 Bit MCU/DSP 40MIPS 64 KB FLASH 28 QFN-S 6x6mm TUBE
Manufacturer
Microchip Technology
Series
dsPIC™ 33Fr
Specifications of DSPIC33FJ64MC202-E/MM
Core Processor
dsPIC
Core Size
16-Bit
Speed
40 MIPs
Connectivity
I²C, IrDA, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, DMA, Motor Control PWM, QEI, POR, PWM, WDT
Number Of I /o
21
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 6x10b/12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
DV164033 - KIT START EXPLORER 16 MPLAB ICD2DM240001 - BOARD DEMO PIC24/DSPIC33/PIC32
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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11.0
All of the device pins (except V
OSC1/CLKI) are shared among the peripherals and the
parallel I/O ports. All I/O input ports feature Schmitt
Trigger inputs for improved noise immunity.
11.1
Generally a parallel I/O port that shares a pin with a
peripheral is subservient to the peripheral. The
peripheral’s output buffer data and control signals are
provided to a pair of multiplexers. The multiplexers
select whether the peripheral or the associated port
FIGURE 11-1:
© 2011 Microchip Technology Inc.
dsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 AND dsPIC33FJ128MCX02/X04
Note 1: This data sheet summarizes the features
2: Some registers and associated bits
I/O PORTS
Parallel I/O (PIO) Ports
of
dsPIC33FJ64MCX02/X04
dsPIC33FJ128MCX02/X04
devices. It is not intended to be a compre-
hensive reference source. To comple-
ment the information in this data sheet,
refer
(DS70193) of the “dsPIC33F/PIC24H
Family Reference Manual”, which is
available from 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.
Read Port
Read LAT
Read TRIS
Data Bus
WR TRIS
WR LAT +
WR Port
the
to
BLOCK DIAGRAM OF A TYPICAL SHARED PORT STRUCTURE
“Section
Peripheral Output Enable
Peripheral Output Data
Peripheral Input Data
Peripheral Module Enable
Peripheral Module
dsPIC33FJ32MC302/304,
PIO Module
DD
TRIS Latch
Data Latch
D
D
CK
CK
10.
, V
SS
Q
Q
I/O
, MCLR and
family
Ports”
and
of
in
Output Multiplexers
has ownership of the output data and control signals of
the I/O pin. The logic also prevents “loop through”, in
which a port’s digital output can drive the input of a
peripheral that shares the same pin.
how ports are shared with other peripherals and the
associated I/O pin to which they are connected.
When a peripheral is enabled and the peripheral is
actively driving an associated pin, the use of the pin as
a general purpose output pin is disabled. The I/O pin
can be read, but the output driver for the parallel port bit
is disabled. If a peripheral is enabled, but the peripheral
is not actively driving a pin, that pin can be driven by a
port.
All port pins have three registers directly associated
with their operation as digital I/O. The data direction
register (TRISx) determines whether the pin is an input
or an output. If the data direction bit is a ‘1’, then the pin
is an input. All port pins are defined as inputs after a
Reset. Reads from the latch (LATx) read the latch.
Writes to the latch write the latch. Reads from the port
(PORTx) read the port pins, while writes to the port pins
write the latch.
Any bit and its associated data and control registers
that are not valid for a particular device is disabled.
This means the corresponding LATx and TRISx
registers and the port pin are read as zeros.
When a pin is shared with another peripheral or
function that is defined as an input only, it is
nevertheless regarded as a dedicated port because
there is no other competing source of outputs.
1
0
1
0
Output Enable
Output Data
Input Data
I/O
I/O Pin
DS70291E-page 163
Figure 11-1
shows
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