MA330028 Microchip Technology, MA330028 Datasheet - Page 380

• 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

27.2
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X,
and PIC24EPXXXGP/MC20X devices contain four
User ID Words, located at addresses 0x800FF8
through 0x800FFE. The User ID Words can be used for
storing product information such as serial numbers,
system
numbers and other application-specific information.
The User ID Words register map is shown in
Table
TABLE 27-3:
27.3
All
dsPIC33EPXXXMC20X/50X, and PIC24EPXXXGP/
MC20X devices power their core digital logic at a
nominal 1.8V. This can create a conflict for designs that
are required to operate at a higher typical voltage, such
as 3.3V. To simplify system design, all devices in the
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X,
and PIC24EPXXXGP/MC20X family incorporate an on-
chip regulator that allows the device to run its core logic
from V
The regulator provides power to the core from the other
V
as tantalum or ceramic) must be connected to the V
pin
the regulator. The recommended value for the filter
capacitor is provided in
Section 30.0 “Electrical
DS70657E-page 380
FUID0
FUID1
FUID2
FUID3
Legend: — = unimplemented, read as ‘1’.
File Name
DD
Note:
(Figure
pins. A low-ESR (less than 1 Ohm) capacitor (such
27-3.
DD
User ID Words
On-Chip Voltage Regulator
.
manufacturing
of
27-1). This helps to maintain the stability of
It is important for the low-ESR capacitor to
be placed as close as possible to the V
pin.
0x800FF8
0x800FFA
0x800FFC
0x800FFE
Address
USER ID WORDS REGISTER
MAP
the
Characteristics”.
dates,
Bit 23-16
dsPIC33EPXXXGP50X,
Table 30-5
—
—
—
—
manufacturing
located in
Bit 15-0
UID0
UID1
UID2
UID3
CAP
CAP
Preliminary
lot
FIGURE 27-1:
27.4
The Brown-out Reset (BOR) module is based on an
internal voltage reference circuit that monitors the reg-
ulated supply voltage V
BOR module is to generate a device Reset when a
brown-out condition occurs. Brown-out conditions are
generally caused by glitches on the AC mains (for
example, missing portions of the AC cycle waveform
due to bad power transmission lines, or voltage sags
due to excessive current draw when a large inductive
load is turned on).
A BOR generates a Reset pulse, which resets the
device. The BOR selects the clock source, based on
the device Configuration bit values (FNOSC<2:0> and
POSCMD<1:0>).
If an oscillator mode is selected, the BOR activates the
Oscillator Start-up Timer (OST). The system clock is
held until OST expires. If the PLL is used, the clock is
held until the LOCK bit (OSCCON<5>) is ‘1’.
Concurrently, the PWRT time-out (TPWRT) is applied
before the internal Reset is released. If TPWRT = 0 and
a crystal oscillator is being used, then a nominal delay
of TFSCM is applied. The total delay in this case is
TFSCM. Refer to parameter SY35 in
Section 30.0 “Electrical Characteristics”
T
The BOR Status bit (RCON<1>) is set to indicate that a
BOR has occurred. The BOR circuit, continues to oper-
ate while in Sleep or Idle modes and resets the device
should V
FSCM
Note 1: These are typical operating voltages. Refer to
values.
C
DD
Brown-out Reset (BOR)
2: It is important for the low-ESR capacitor to be
3: Typical V
EFC
fall below the BOR threshold voltage.
Table 30-5
acteristics”
V
placed as close as possible to the V
V
DD
DD
3.3V
and V
≥ V
© 2011-2012 Microchip Technology Inc.
DDMIN
CAP
CAP
CONNECTIONS FOR THE
ON-CHIP VOLTAGE
REGULATOR
located in
V
V
V
dsPIC33E/PIC24E
CAP
DD
CAP
SS
for the full operating ranges of
pin voltage = 1.8V when
.
.
. The main purpose of the
Section 30.1 “DC Char-
(1,2,3)
Table 30-21
for specific
CAP
pin.
of