LPC2470FBD208,551 NXP Semiconductors, LPC2470FBD208,551 Datasheet - Page 374
![IC ARM7 MCU LCD 208-LQFP](/photos/12/13/121391/208-lqfp_sot459-1_pkg_sml.jpg)
LPC2470FBD208,551
Manufacturer Part Number
LPC2470FBD208,551
Description
IC ARM7 MCU LCD 208-LQFP
Manufacturer
NXP Semiconductors
Series
LPC2400r
Datasheets
1.OM11077.pdf
(792 pages)
2.LPC2470FET208551.pdf
(89 pages)
3.LPC2470FET208551.pdf
(91 pages)
Specifications of LPC2470FBD208,551
Package / Case
208-LQFP
Core Processor
ARM7
Core Size
16/32-Bit
Speed
72MHz
Connectivity
CAN, EBI/EMI, Ethernet, I²C, Microwire, MMC, SPI, SSI, SSP, UART/USART, USB OTG
Peripherals
Brown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT
Number Of I /o
160
Program Memory Type
ROMless
Ram Size
98K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
LPC24
Core
ARM7TDMI-S
Data Bus Width
16 bit, 32 bit
Data Ram Size
98 KB
Interface Type
CAN/I2C/I2S/SPI/SSP/UART/USB
Maximum Clock Frequency
72 MHz
Number Of Programmable I/os
160
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2, MCB2470U
Minimum Operating Temperature
- 40 C
On-chip Adc
8-ch x 10-bit
On-chip Dac
1-ch x 10-bit
Package
208LQFP
Device Core
ARM7TDMI-S
Family Name
LPC2000
Maximum Speed
72 MHz
Operating Supply Voltage
3.3 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
568-4361-5
935284068551
LPC2470FBD208-S
935284068551
LPC2470FBD208-S
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LPC2470FBD208,551
Manufacturer:
NXP Semiconductors
Quantity:
10 000
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NXP Semiconductors
14. DMA operation
UM10237_4
User manual
13.3 Data transfer for IN endpoints
14.1 Transfer terminology
endpoints, the next packet will be received irrespective of whether the buffer has been
cleared. Any data not read from the buffer before the end of the frame is lost. See
Section 13–15 “Double buffered endpoint operation”
If the software clears RD_EN before the entire packet is read, reading is terminated, and
the data remains in the endpoint’s buffer. When RD_EN is set again for this endpoint, the
data will be read from the beginning.
When writing data to an endpoint buffer, WR_EN
(USBCtrl - 0xFFE0
send in the packet to the USBTxPLen register
continuously in the USBTxData register.
When the the number of bytes programmed in USBTxPLen have been written to
USBTxData, the WR_EN bit is cleared, and the TxENDPKT bit is set in the USBDevIntSt
register. Software issues a Validate Buffer
0xFA, Data:
isochronous endpoints, the data in the buffer will be sent only if the buffer is validated
before the next FRAME interrupt occurs; otherwise, an empty packet will be sent in the
next frame. If the software clears WR_EN before the entire packet is written, writing will
start again from the beginning the next time WR_EN is set for this endpoint.
Both RD_EN and WR_EN can be high at the same time for the same logical endpoint.
Interleaved read and write operation is possible.
In DMA mode, the DMA transfers data between RAM and the endpoint buffer.
The following sections discuss DMA mode operation. Background information is given in
sections
“Triggering the DMA
Section 13–14.4 “The DMA
Section 13–14.5 “Non-isochronous endpoint
endpoint
operation”.
Within this section three types of transfers are mentioned:
1. USB transfers – transfer of data over the USB bus. The USB 2.0 specification refers
2. DMA transfers – the transfer of data between an endpoint buffer and system memory
3. Packet transfers – in this section, a packet transfer refers to the transfer of a packet of
to these simply as transfers. Within this section they are referred to as USB transfers
to distinguish them from DMA transfers. A USB transfer is composed of transactions.
Each transaction is composed of packets.
(RAM).
data between an endpoint buffer and system memory (RAM). A DMA transfer is
composed of one or more packet transfers.
Section 13–14.2 “USB device communication area”
operation”, and
none)”) command. The endpoint is now ready to send the packet. For IN
C228)”) is set and software writes to the number of bytes it is going to
engine”. The fields of the DMA Descriptor are described in section
Rev. 04 — 26 August 2009
Section 13–14.7 “Auto Length Transfer Extraction (ATLE) mode
descriptor”. The last three sections describe DMA operation:
Chapter 13: LPC24XX USB device controller
(Section 13–11.14 “Validate Buffer (Command:
operation”,
(Section
(Section 13–9.6.5 “USB Control register
for more details.
13–9.6.4). It can then write data
Section 13–14.6 “Isochronous
and
Section 13–14.3
UM10237
© NXP B.V. 2009. All rights reserved.
374 of 792
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