DSPIC30F2010-20I/MM Microchip Technology, DSPIC30F2010-20I/MM Datasheet - Page 14

• Manufacturer Part Number: DSPIC30F2010-20I/MM
• Description: IC DSPIC MCU/DSP 12K 28QFN
• Manufacturer: Microchip Technology
• Series: dsPIC™ 30Fr

Specifications of DSPIC30F2010-20I/MM

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 MIPS
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, Motor Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 20
• Program Memory Size: 12KB (4K x 24)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-QFN
• Core Frequency: 40MHz
• Core Supply Voltage: 5.5V
• Embedded Interface Type: I2C, SPI, UART
• No. Of I/o's: 20
• Flash Memory Size: 12KB
• Supply Voltage Range: 2.5V To 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC164322 - MODULE SOCKET MPLAB PM3 28/44QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: DSPIC30F2010-20I/MMG; DSPIC30F201020IMM; DSPIC30F201020IMM

dsPIC30F2010
27. Module: PSV Operations
28. Module: I
29. Module: I
DS80186J-page 14
An address error trap occurs in certain addressing
modes when accessing the first four bytes of an
PSV page. This only occurs when using the
following addressing modes:
• MOV.D
• Register Indirect Addressing (word or byte
Work around
Do not perform PSV accesses to any of the first
four bytes using the above addressing modes. For
applications using the C language, MPLAB C30
version 3.11 or higher, provides the following
command-line switch that implements a work
around for the erratum.
-merrata=psv_trap
Refer to the readme.txt file in the MPLAB C30
v3.11 tool suite for further details.
In 10-bit Addressing mode, some address
matches do not set the RBF flag or load the
receive register I2CxRCV if the lower address byte
matches the reserved addresses. In particular,
these include all addresses with the form
XX0000XXXX
following exceptions:
• 001111000X
• 011111001X
• 101111010X
• 111111011X
Work around
Ensure that the lower address byte in 10-bit
Addressing mode does not match any 7-bit
reserved addresses.
When the I
slave with and address of 0x102, the I2CxRCV
register content for the lower address byte is 0x01
rather
acknowledges both address bytes.
Work around
None.
mode) with pre/post-decrement
than
2
2
2
C
C
C module is configured as a 10-bit
0x02;
and
XX1111XXXX,
however,
the
with
module
the
30. Module: I
Note:
When the I
I2CEN bit in the I2CCON register, the dsPIC DSC
device generates a glitch on the SDA and SCL
pins. This glitch falsely indicates “Communication
Start” to all devices on the I
a bus collision in a multi-master configuration.
Additionally, when the I2CEN bit is set, the S and
P bits of the I
‘0’, respectively, which indicate a “Communication
Start” condition.
Work arounds
To avoid this issue, either of the following two work
arounds can be implemented, depending on the
application requirements.
Work around 1:
In a single-master environment, add a delay
between enabling the I
transmission. The delay should be equal to or
greater than the time it takes to transmit two data
bits.
In the multi-master configuration, in addition to the
delay, all other I
nized and wait for the I
before initiating any kind of communication.
Work around 2:
In dsPIC DSC devices in which the I
multiplexed
precedence in the use of the pin, it is possible to
avoid this glitch by enabling the higher priority
module before enabling the I
Use the following procedure to implement this
work around:
1. Enable the higher priority peripheral module
2. Set up and enable the I
3. Disable the higher priority peripheral module
that is multiplexed on the same pins as the I
module.
that was enabled in step 1.
Work around 2 works only for devices that
share the SDA and SCL pins with another
peripheral that has a higher precedence
over the port latch, such as the UART. The
priority is shown in the pin diagram located
in the data sheet. For example, if the SDA
and SCL pins are shared with the UART
and SPI pins, and the UART has higher
precedence on the port latch pin.
2
2
C
C module is enabled by setting the
2
with
C module are set to values ‘1’ and
2
C masters should be synchro-
© 2008 Microchip Technology Inc.
other
2
2
C module and the first data
C module to be initialized
2
2
modules
C module.
C bus, and can cause
2
C module.
2
C module is
that
have
2
C