DSPIC30F4012-20I/SO Microchip Technology, DSPIC30F4012-20I/SO Datasheet - Page 5

• Manufacturer Part Number: DSPIC30F4012-20I/SO
• Description: IC, DSC, 16BIT, 48KB 20MHZ, 5.5V, SOIC28
• Manufacturer: Microchip Technology
• Series: DsPIC30Fr

Specifications of DSPIC30F4012-20I/SO

• Core Frequency: 20MHz
• Embedded Interface Type: CAN, I2C, SPI, UART
• No. Of I/o's: 20
• Flash Memory Size: 48KB
• Supply Voltage Range: 2.5V To 5.5V
• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 MIPS
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, Motor Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 20
• Program Memory Size: 48KB (16K 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 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Package: 28SOIC W
• Device Core: dsPIC
• Family Name: dsPIC30
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 20
• Interface Type: CAN/I2C/SPI/UART
• On-chip Adc: 6-chx10-bit
• Number Of Timers: 5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MIL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: DSPIC30F401220ISO

5. Module: Early Termination of Nested DO
EXAMPLE 4:
© 2008 Microchip Technology Inc.
LOOP1: MOV
LOOP0: MOV
Note:
When using two DO loops in a nested fashion,
terminating the inner-level DO loop by setting the
EDT (CORCON<11>) bit will produce unexpected
results. Specifically, the device may continue
executing code within the outer DO loop forever.
This erratum does not affect the operation of the
MPLAB C30 compiler.
Work around
The application should save the DCOUNT SFR
prior to entering the inner DO loop and restore it
upon exiting the inner DO loop. This work around is
shown in Example 4.
.include “p30fxxxx.inc”
.......
DO
....
PUSH DCOUNT
DO
....
BTSS Flag, #0
BSET CORCON, #EDT
....
....
POP
...
For details on the functionality of
EDT bit, see section 2.9.2.4
in the dsPIC30F Family Reference
Manual.
#CNT1, LOOP0
#CNT2, LOOP1
W1, W5
DCOUNT
W5, W8
Loops
SAVE AND RESTORE
DCOUNT
;Outer loop start
;Save DCOUNT
;Inner loop
;starts
;Terminate inner
;DO-loop early
;Inner loop ends
;Restore DCOUNT
;Outer loop ends
6. Module: 4x PLL Operation
dsPIC30F4011/4012
When the 4x PLL mode of operation is selected,
the specified input frequency range of 4-10 MHz is
not fully supported.
When device V
frequency must be in the range of 4-5 MHz. When
device V
must be in the range of 4-6 MHz for both industrial
and extended temperature ranges.
Work around
1. Use 8x PLL or 16x PLL mode of operation and
2. Use the EC without PLL Clock mode with a
set final device clock speed using the
POST<1:0> oscillator postscaler control bits
(OSCCON<7:6>).
suitable clock frequency to obtain the equivalent
4x PLL clock rate.
DD
is 3.0-3.6V, the 4x PLL input frequency
DD
is 2.5-3.0V, the 4x PLL input
DS80215K-page 5