DSPIC30F5011-20E/PT Microchip Technology, DSPIC30F5011-20E/PT Datasheet - Page 9

• Manufacturer Part Number: DSPIC30F5011-20E/PT
• Description: IC,DSP,16-BIT,CMOS,TQFP,64PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: dsPIC™ 30Fr

Specifications of DSPIC30F5011-20E/PT

• Rohs Compliant: YES
• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 MIPS
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: AC'97, Brown-out Detect/Reset, I²S, LVD, POR, PWM, WDT
• Number Of I /o: 52
• Program Memory Size: 66KB (22K x 24)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.5 V ~ 5.5 V
• Data Converters: A/D 16x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 64-TFQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT64PT5 - SOCKET TRAN ICE 64MQFP/TQFPAC30F008 - MODULE SKT FOR DSPIC30F 64TQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: DSPIC30F5011-20E/PTG; DSPIC30F501120EPT; DSPIC30F501120EPT

7. Module: UART
EXAMPLE 7:
© 2010 Microchip Technology Inc.
Data writes to the U1MODE and U2MODE Special
Function Registers may not be correct at device
operation greater than 20 MIPS for V
range of 4.5V to 5.5V (or 10 MIPS V
of 3V to 3.6V).
If the dsPIC DSC device needs to operate at a
throughput higher than 20 MIPS, the user should
incorporate the suggested work around while
writing to the U1MODE or U2MODE SFR.
Applications that use UART software functions
from Microchip’s dsPIC30F Peripheral Library
should operate the device at 20 MIPS or less.
Work arounds
Work around 1: For Assembly Language
Source Code
When writing to the U1MODE (or U2MODE) SFR,
the user must follow the write sequence shown in
Example
Addressing mode is used to write to the SFR. The
application may use any addressing mode to
perform the write operation. Note that interrupts
must be temporarily disabled as shown, so that
this write sequence does not get interrupted.
.include “p30fxxxx.inc”
.......
MOV
PUSH
BSET
BSET
BSET
MOV
MOV
MOV
POP
#reg_value, W1 ;U1MODE value
SR
SR,
SR,
SR,
#U1MODE, W0
W0, W0
W1,
SR
7. In this example, a Memory Direct
#IPL2
#IPL1
#IPL0
U1MODE
SPECIAL WRITE SEQUENCE
;write U1MODE
;address to W0
;perform a direct
;write to W0
;write to U1MODE
DD
in the range
DD
in the
dsPIC30F5011/5013
Work around 2: For C Language Source Code
For C programmers, the MPLAB C30 v1.30
toolsuite provides a built-in function that may be
incorporated in the application source code. This
function may be used to write to the U1MODE and
U2MODE SFRs. Some examples of usage are
shown in the “readme.txt” file provided with the
MPLAB C30 v1.30 toolsuite. The function has the
following prototype:
void __builtin_writesfr(volatile void *,
unsigned int);
The special argument is the address of a 16-bit
SFR (U1MODE or U2MODE in this case). For
example, the U1MODE register can be written
using a function call:
__builtin_writesfr(&U1MODE, reg_value);
where ‘reg_value’ is the 16-bit value to be
written to the SFR.
Affected Silicon Revisions
A1
X
A2
X
A3
X
A4
X
DS80453E-page 9