DSPIC30F3011-20I/ML Microchip Technology, DSPIC30F3011-20I/ML Datasheet - Page 4
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DSPIC30F3011-20I/ML
Manufacturer Part Number
DSPIC30F3011-20I/ML
Description
IC DSPIC MCU/DSP 24K 44QFN
Manufacturer
Microchip Technology
Series
dsPIC™ 30Fr
Datasheets
1.DSPIC30F3010-30ISO.pdf
(228 pages)
2.DSPIC30F3010-30ISO.pdf
(18 pages)
3.DSPIC30F3010-30ISO.pdf
(6 pages)
4.DSPIC30F3010-30ISO.pdf
(16 pages)
5.DSPIC30F3010-30ISO.pdf
(22 pages)
6.DSPIC30F3010-20ISP.pdf
(226 pages)
Specifications of DSPIC30F3011-20I/ML
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
30
Program Memory Size
24KB (8K x 24)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.5 V ~ 5.5 V
Data Converters
A/D 9x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-QFN
Core Frequency
40MHz
Core Supply Voltage
5.5V
Embedded Interface Type
I2C, SPI, UART
No. Of I/o's
30
Flash Memory Size
24KB
Supply Voltage Range
2.5V To 5.5V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
XLT44QFN2 - SOCKET TRAN ICE 44QFN/40DIPAC164322 - MODULE SOCKET MPLAB PM3 28/44QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
DSPIC30F301120IML
dsPIC30F3010/3011
3. Module: PSV Operations Using SR
TABLE 1:
EXAMPLE 2:
DS80216K-page 4
ADDC
SUBB
SUBBR
CPB
RLC
RRC
ADD (Accumulator-based)
LAC
Note 1:
.include “p30fxxxx.inc”
.......
MOV.B #0x00, W0
MOV.B WREG, PSVPAG
BSET CORCON, #PSV
....
MOV
ADD
ADDC W4, [W1++], W6 ;Carry flag and
When one of the operands of instructions shown in
Table 1 is fetched from program memory using
Program Space Visibility (PSV), the STATUS
Register, SR and/or the results may be corrupted.
Work arounds
Work around 1: For Assembly Language
Source Code
To work around the erratum in the MPLAB ASM30
assembler, the application may perform a PSV
access to move the source operand from program
memory to RAM or a W register prior to performing
the operations listed in Table 1. The work around
for Example 2 is demonstrated in Example 3.
2:
3:
4:
#0x8200, W1
W3, [W1++], W5 ;This instruction
Refer to the “dsPIC30F/33F Programmer’s Reference Manual” (DS70157) for details on the dsPIC30F
instruction set.
The errata only affects these instructions when a PSV access is performed to fetch one of the source
operands in the instruction. A PSV access is performed when the Effective Address of the source operand
is greater than 0x8000 and the PSV (CORCON<2>) bit is set to ‘1’. In the examples shown, the data
access from program memory is made via the W1 register.
SR<1:0> bits represent Sticky Zero and Carry Status bits, respectively.
SR<15:10> bits represent Accumulator Overflow and Saturation Status bits.
Instruction
AFFECTED INSTRUCTIONS
INCORRECT RESULTS
(1)
;Load PSVPAG register
;Enable PSV
;Set up W1 for
;indirect PSV access
;from 0x000200
;works ok
;W6 gets
;corrupted here!
ADDC W0, [W1++], W2 ;
SUBB.b W0, [++W1], W3 ;
SUBBR.b W0, [++W1], W3 ;
CPB W0, [W1++], W4 ;
RLC [W1], W4 ;
RRC [W1], W2 ;
ADD [W1++], A ;
LAC [W1], A ;
Examples of Incorrect Operation
EXAMPLE 3:
.include “p30fxxxx.inc”
.......
MOV.B #0x00, w0
MOV.B WREG, PSVPAG
BSET
....
MOV
ADD
MOV
ADDC
These instructions are identified in Table 1.
Example 2 demonstrates one scenario where this
occurs.
Also, always use Work around 2 if the C compiler
is used to generate code for dsPIC30F3010/3011
devices.
Work around 2: For C Language Source Code
For applications using C language, MPLAB C30
versions 1.20.04 or higher provide the following
command-line switch that implements a work
around for the erratum.
Refer to the “readme.txt” file in the MPLAB C30
v1.20.04 toolsuite for further details.
CORCON, #PSV
#0x8200, W1
W3, [W1++], W5 ;This instruction
[W1++], W2
W4, W2, W6
(2)
-merrata=psv
SR<1:0> bits
SR<1:0> bits
SR<1:0> bits
SR<1:0> bits
SR<1:0> bits
SR<1:0> bits
SR<1:0> bits
SR<15:10> bits
CORRECT RESULTS
© 2008 Microchip Technology Inc.
Data Corruption IN
;Load PSVPAG register
;Enable PSV
;Set up W1 for
;indirect PSV access
;from 0x000200
;works ok
;Load W2 with data
;from program memory
;Carry flag and W4
;results are ok!
(3)
(3)
(3)
(3)
(3)
(3)
(3)
, Result in W2
, Result in W3
, Result in W3
, Result in W4
, Result in W2
(4)