LPC1837FET256,551 NXP Semiconductors, LPC1837FET256,551 Datasheet - Page 761

• Manufacturer Part Number: LPC1837FET256,551
• Description: Microcontrollers (MCU) 32BIT ARM CORTEX-M3 MCU 136KB SRAM
• Manufacturer: NXP Semiconductors
• Series: LPC18xxr

Specifications of LPC1837FET256,551

• Core: ARM Cortex M3
• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 150MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, Microwire, SD/MMC, SPI, SSI, SSP, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, I²S, Motor Control PWM, POR, PWM, WDT
• Number Of I /o: 80
• Program Memory Size: 1MB (1M x 8)
• Program Memory Type: FLASH
• Eeprom Size: -
• Ram Size: 136K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-LBGA
• Lead Free Status / Rohs Status: Details
• Other names: 935293795551

NXP Semiconductors
<Document ID>
User manual
Fig 97. Auto-baud a) mode 0 and b) mode 1 waveform
a. Mode 0 (start bit and LSB are used for auto-baud)
b. Mode 1 (only start bit is used for auto-baud)
16xbaud_rate
16xbaud_rate
U0ACR start
U1ACR start
rate counter
rate counter
UARTn RX
UARTn RX
33.5.16 UART1 Fractional Divider Register
The UART1 Fractional Divider Register (U1FDR) controls the clock pre-scaler for the
baud rate generation and can be read and written at the user’s discretion. This pre-scaler
takes the APB clock and generates an output clock according to the specified fractional
requirements.
Important: If the fractional divider is active (DIVADDVAL > 0) and DLM = 0, the value of
the DLL register must be greater than 2.
start
start
16 cycles
16 cycles
bit0
bit0
All information provided in this document is subject to legal disclaimers.
bit1
bit1
start bit
start bit
Rev. 00.13 — 20 July 2011
bit2
bit2
'A' (0x41) or 'a' (0x61)
'A' (0x41) or 'a' (0x61)
bit3
bit3
bit4
bit4
16 cycles
bit5
bit5
bit6
bit6
LSB of 'A' or 'a'
LSB of 'A' or 'a'
bit7
bit7
Chapter 33: LPC18xx UART1
parity stop
parity stop
UM10430
© NXP B.V. 2011. All rights reserved.
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