LPC1343FHN33,551 NXP Semiconductors, LPC1343FHN33,551 Datasheet - Page 182
LPC1343FHN33,551
Manufacturer Part Number
LPC1343FHN33,551
Description
IC MCU 32BIT 32KB FLASH 33HVQFN
Manufacturer
NXP Semiconductors
Series
LPC13xxr
Specifications of LPC1343FHN33,551
Program Memory Type
FLASH
Program Memory Size
32KB (32K x 8)
Package / Case
33-VQFN Exposed Pad, 33-HVQFN, 33-SQFN, 33-DHVQFN
Core Processor
ARM® Cortex-M3™
Core Size
32-Bit
Speed
72MHz
Connectivity
I²C, Microwire, SPI, SSI, SSP, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, WDT
Number Of I /o
28
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
LPC13
Core
ARM Cortex M3
Data Bus Width
32 bit
Data Ram Size
8 KB
Interface Type
I2C, UART
Maximum Clock Frequency
72 MHz
Number Of Programmable I/os
28
Number Of Timers
4
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2, KSK-LPC1343
Development Tools By Supplier
OM11039, OM11040, OM11046, OM11048
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Package
33HVQFN EP
Device Core
ARM Cortex M3
Family Name
LPC1000
Maximum Speed
72 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
622-1005 - USB IN-CIRCUIT PROG ARM7 LPC2K
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
568-4944
935289655551
935289655551
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LPC1343FHN33,551
Manufacturer:
NXP
Quantity:
780
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NXP Semiconductors
UM10375
User manual
11.6.15.1 Baud rate calculation
Table 202. UART Fractional Divider Register (U0FDR - address 0x4000 8028) bit description
This register controls the clock pre-scaler for the baud rate generation. The reset value of
the register keeps the fractional capabilities of UART disabled making sure that UART is
fully software and hardware compatible with UARTs not equipped with this feature.
The UART baud rate can be calculated as:
Where UART_PCLK is the peripheral clock, U0DLM and U0DLL are the standard UART
baud rate divider registers, and DIVADDVAL and MULVAL are UART fractional baud rate
generator specific parameters.
The value of MULVAL and DIVADDVAL should comply to the following conditions:
The value of the U0FDR should not be modified while transmitting/receiving data or data
may be lost or corrupted.
If the U0FDR register value does not comply to these two requests, then the fractional
divider output is undefined. If DIVADDVAL is zero then the fractional divider is disabled,
and the clock will not be divided.
UART can operate with or without using the Fractional Divider. In real-life applications it is
likely that the desired baud rate can be achieved using several different Fractional Divider
settings. The following algorithm illustrates one way of finding a set of DLM, DLL,
MULVAL, and DIVADDVAL values. Such set of parameters yields a baud rate with a
relative error of less than 1.1% from the desired one.
Bit
3:0
7:4
31:8
1. 1 ≤ MULVAL ≤ 15
2. 0 ≤ DIVADDVAL ≤ 14
3. DIVADDVAL< MULVAL
Function
DIVADDVAL
MULVAL
-
UART
All information provided in this document is subject to legal disclaimers.
baudrate
Value Description
0
1
NA
Rev. 2 — 7 July 2010
=
Baud rate generation pre-scaler divisor value. If this field is
0, fractional baud rate generator will not impact the UART
baud rate.
Baud rate pre-scaler multiplier value. This field must be
greater or equal 1 for UART to operate properly,
regardless of whether the fractional baud rate generator is
used or not.
Reserved, user software should not write ones to reserved
bits. The value read from a reserved bit is not defined.
----------------------------------------------------------------------------------------------------------------------------------
16
×
(
256
×
U0DLM
+
PCLK
U0DLL
)
×
Chapter 11: LPC13xx UART
⎛
⎝
1
+
DivAddVal
---------------------------- -
MulVal
UM10375
© NXP B.V. 2010. All rights reserved.
⎞
⎠
184 of 333
Reset
value
0
1
0
(3)
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