DSPIC30F3012-20I/SO Microchip Technology, DSPIC30F3012-20I/SO Datasheet - Page 6
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DSPIC30F3012-20I/SO
Manufacturer Part Number
DSPIC30F3012-20I/SO
Description
IC DSPIC MCU/DSP 24K 18SOIC
Manufacturer
Microchip Technology
Series
dsPIC™ 30Fr
Datasheets
1.DSPIC30F2011-20ISO.pdf
(210 pages)
2.DSPIC30F2011-20ISO.pdf
(6 pages)
3.DSPIC30F3012-20ISO.pdf
(14 pages)
4.DSPIC30F3012-20ISO.pdf
(20 pages)
5.DSPIC30F2011-20IP.pdf
(206 pages)
Specifications of DSPIC30F3012-20I/SO
Core Processor
dsPIC
Core Size
16-Bit
Speed
20 MIPS
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
12
Program Memory Size
24KB (8K x 24)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Data Converters
A/D 8x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
18-SOIC (7.5mm Width)
Core Frequency
40MHz
Core Supply Voltage
5.5V
Embedded Interface Type
I2C, SPI, UART
No. Of I/o's
12
Flash Memory Size
24KB
Supply Voltage Range
2.5V To 5.5V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT18SO-1 - SOCKET TRANSITION 18SOIC 300MILAC30F005 - MODULE SCKT DSPIC30F 18DIP/SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
DSPIC30F301220ISO
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DSPIC30F3012-20I/SO
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
dsPIC30F3012/3013
6. Module: DISI Instruction
DS80255F-page 6
When a user executes a DISI #7, for example,
this will disable interrupts for 7 + 1 cycles (7 + the
DISI instruction itself). In this case, the DISI
instruction uses a counter which counts down from
7 to 0. The counter is loaded with 7 at the end of
the DISI instruction.
If the user code executes another DISI on the
instruction cycle where the DISI counter has
become zero, the new DISI count is loaded, but
the DISI state machine does not properly
re-engage and continue to disable interrupts. At
this point, all interrupts are enabled. The next time
the user code executes a DISI instruction, the
feature will act normally and block interrupts.
In summary, it is only when a DISI execution is
coincident with the current DISI count = 0, that the
issue occurs. Executing a DISI instruction before
the DISI counter reaches zero will not produce
this error. In this case, the DISI counter is loaded
with the new value, and interrupts remain disabled
until the counter becomes zero.
Work around
When executing multiple DISI instructions within
the source code, make sure that subsequent DISI
instructions have at least one instruction cycle
between the time that the DISI counter
decrements to zero and the next DISI instruction.
Alternatively, make sure that subsequent DISI
instructions are called before the DISI counter
decrements to zero.
7. Module: Output Compare in PWM Mode
8. Module: Output Compare
If the desired duty cycle is ‘0’ (OCxRS = 0), the
module will generate a high level glitch of 1 T
The second problem is that on the next cycle after
the glitch, the OC pin does not go high, in other
words, it misses the next compare for any value
written on OCxRS.
Work around
There are two possible solutions to this problem:
1. Load a value greater than ‘0’ to the OCxRS
2. If the application requires 0% duty cycles, the
A glitch will be produced on an output compare pin
under the following conditions:
• The user software initially drives the I/O pin
• The output compare module is configured and
When these events occur, the output compare
module will drive the pin low for one instruction
cycle (T
Work around
None. However, the user may use a timer interrupt
and write to the associated PORT register to
control the pin manually.
high using the output compare module or a
write to the associated PORT register.
enabled to drive the pin low at some later time
(OCxCON = 0x0002 or OCxCON = 0x0003).
register when operating in PWM mode. In this
case, no 0% duty cycle is achievable.
output compare module can be disabled
for 0% duty cycles, and re-enabled for
non-zero percent duty cycles.
CY
) after the module is enabled.
© 2008 Microchip Technology Inc.
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.