PIC24F08KA102-E/ML Microchip Technology, PIC24F08KA102-E/ML Datasheet - Page 146
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PIC24F08KA102-E/ML
Manufacturer Part Number
PIC24F08KA102-E/ML
Description
8KB Flash, 1.5KB RAM, 512B EEPROM, 16 MIPS, 24 I/O,16-bit PIC24F Family, NanoWat
Manufacturer
Microchip Technology
Series
PIC® XLP™ 24Fr
Datasheet
1.MA240017.pdf
(254 pages)
Specifications of PIC24F08KA102-E/ML
Core Processor
PIC
Core Size
16-Bit
Speed
32MHz
Connectivity
I²C, IrDA, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
24
Program Memory Size
8KB (2.75K x 24)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 9x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Processor Series
PIC24F
Core
PIC
3rd Party Development Tools
52713-733, 52714-737, 53276-922, EWDSPIC
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, DM240001
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PIC24F16KA102 FAMILY
18.1
The UART module includes a dedicated 16-bit Baud
Rate Generator (BRG). The UxBRG register controls
the period of a free-running, 16-bit timer. Equation 18-1
provides the formula for computation of the baud rate
with BRGH = 0.
EQUATION 18-1:
Example 18-1 provides the calculation of the baud rate
error for the following conditions:
• F
• Desired Baud Rate = 9600
EXAMPLE 18-1:
DS39927B-page 144
Note 1:
Desired Baud Rate
Solving for UxBRG value:
Calculated Baud Rate = 4000000/(16 (25 + 1))
Error
Note 1:
CY
= 4 MHz
UART Baud Rate Generator (BRG)
UxBRG
UxBRG
UxBRG
Baud Rate =
UxBRG =
Based on F
and PLL are disabled.
Based on F
UART BAUD RATE WITH
BRGH = 0
BAUD RATE ERROR CALCULATION (BRGH = 0)
16 • (UxBRG + 1)
CY
16 • Baud Rate
= F
= ((F
= ((4000000/9600)/16) – 1
= 25
= 9615
= (Calculated Baud Rate – Desired Baud Rate)
= (9615 – 9600)/9600
= 0.16%
CY
= F
Desired Baud Rate
= F
CY
F
F
CY
CY
OSC
CY
/(16 (UxBRG + 1))
OSC
/Desired Baud Rate)/16) – 1
(1)
/2, Doze mode
/2, Doze mode and PLL are disabled.
– 1
Preliminary
The maximum baud rate (BRGH = 0) possible is
F
possible is F
Equation 18-2 provides the formula for computation of
the baud rate with BRGH = 1.
EQUATION 18-2:
The maximum baud rate (BRGH = 1) possible is F
(for UxBRG = 0) and the minimum baud rate possible
is F
Writing a new value to the UxBRG register causes the
BRG timer to be reset (cleared). This ensures the BRG
does not wait for a timer overflow before generating the
new baud rate.
CY
Note 1:
CY
/16 (for UxBRG = 0) and the minimum baud rate
/(4 * 65536).
Baud Rate =
UxBRG =
CY
Based on F
and PLL are disabled.
/(16 * 65536).
(1)
UART BAUD RATE WITH
BRGH = 1
© 2009 Microchip Technology Inc.
4 • (UxBRG + 1)
CY
4 • Baud Rate
= F
F
F
OSC
CY
CY
(1)
/2, Doze mode
– 1
CY
/4
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