DSPIC30F2020-20E/SO Microchip Technology, DSPIC30F2020-20E/SO Datasheet - Page 18

• Manufacturer Part Number: DSPIC30F2020-20E/SO
• Description: IC, DSC, 16BIT, 12KB 40MHZ, 5.5V, SOIC28
• Manufacturer: Microchip Technology
• Series: DsPIC30Fr

Specifications of DSPIC30F2020-20E/SO

• 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
• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 MIPS
• Connectivity: I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 21
• Program Memory Size: 12KB (4K x 24)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-SOIC (7.5mm Width)
• Package: 28SOIC W
• Device Core: dsPIC
• Family Name: dsPIC30
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 21
• Interface Type: I2C/SPI/UART
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM300023 - KIT DEMO DSPICDEM SMPS BUCKDV164005 - KIT ICD2 SIMPLE SUIT W/USB CABLE
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

dsPIC30F1010/202X
44. Module: I
45. Module: I
DS80290J-page 18
If there are two I
them is acting as the Master receiver and the other
as the Slave transmitter. Suppose that both
devices are configured for 10-bit addressing
mode, and have the same value in the A10 and A9
bits of their addresses. When the Slave select
address is sent from the Master, both the Master
and Slave acknowledges it. When the Master
sends out the read operation, both the Master and
the Slave enter into Read mode and both of them
transmit the data. The resultant data will be the
ANDing of the two transmissions.
Work around
Use different addresses including the higher two
bits (A10 and A9) for different modules.
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
particular, these include all addresses with the
form “XX0000XXXX” and “XX1111XXXX”, with the
following exceptions:
• 001111000X
• 011111001X
• 101111010X
• 111111011X
Work around
The lower address byte in 10-bit Addressing mode
should not be a reserved address.
matches
2
2
C Module
C Module
the
2
C devices on the bus, one of
reserved
addresses.
In
46. Module: I
47. Module: UART (FIFO Error Flags)
48. Module: Module: PSV Operations
If the I
with an address of 0x102, the I2CxRCV register
content for the lower address byte is 0x01 rather
than
acknowledges both address bytes.
Work around
None.
Under certain circumstances, the PERR and
FERR error bits may not be correct for all bytes in
the receive FIFO. This has only been observed
when both of the following conditions are met:
• The UART receive interrupt is set to occur
• More than two bytes with an error are received.
In these two circumstances, only the first two bytes
with a parity or framing error will have the
corresponding bits indicated correctly. The error
bits will not be set after this occurs.
Work around
None.
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 toolsuite for further details.
when the FIFO is full or three-quarters full
(U1STA<7:6> = 1x), and
mode) with pre/post decrement
2
C module is configured for a 10-bit slave
0x02.
2
C Module
However,
© 2008 Microchip Technology Inc.
the
I
2
C
module