LPC1837FET256,551 NXP Semiconductors, LPC1837FET256,551 Datasheet - Page 675

• 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
27.6.2.12 QEI Velocity Compare register
27.6.2.13 QEI Digital filter on phase A input register
27.6.2.14 QEI Digital filter on phase B input register
27.6.2.15 QEI Digital filter on index input register
27.6.2.11 QEI Velocity Capture register
This register contains the most recently measured velocity of the encoder. This
corresponds to the number of velocity pulses counted in the previous velocity timer
period.The current velocity count is latched into this register when the velocity timer
overflows.
Table 588. QEI Velocity Capture register (CAP - address 0x400C 6034) bit description
This register contains a velocity compare value. This value is compared against the
captured velocity in the velocity capture register. If the capture velocity is less than the
value in this compare register, a velocity compare interrupt (VELC_Int) will be asserted, if
enabled.
Table 589. QEI Velocity Compare register (VELCOMP - address 0x400C 6038) bit description
This register contains the sampling count for the digital filter. A sampling count of zero
bypasses the filter.
Table 590. QEI Digital filter on phase A input register (FILTERPHA - 0x400C 603C) bit
This register contains the sampling count for the digital filter. A sampling count of zero
bypasses the filter.
Table 591. QEI Digital filter on phase B input register (FILTERPHB - 0x400C 6040) bit
This register contains the sampling count for the digital filter. A sampling count of zero
bypasses the filter.
Table 592. QEI Digital filter on index input register (FILTERINX - 0x400C 6044) bit
Bit
31:0
Bit
31:0
Bit
31:0
Bit
31:0
Bit
31:0
Symbol
VELCAP
Symbol
VELCMP
Symbol
FILTA
Symbol
FILTB
Symbol
FITLINX
description
description
description
All information provided in this document is subject to legal disclaimers.
Description
Velocity capture value.
Description
Velocity compare value.
Description
Digital filter sampling delay
Description
Digital filter sampling delay
Description
Digital filter sampling delay
Rev. 00.13 — 20 July 2011
Chapter 27: LPC18xx Quadrature Encoder Interface (QEI)
UM10430
© NXP B.V. 2011. All rights reserved.
Reset value
0xFFFF FFFF
Reset value
0x0
675 of 1164
Reset
value
0x0
Reset
value
0x0
Reset
value
0x0