LPC2377_78 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 6.1 — 16 October 2013 25 of 69
NXP Semiconductors
LPC2377/78
Single-chip 16-bit/32-bit microcontrollers
7.14 10-bit DAC
The DAC allows the LPC2377/78 to generate a variable analog output. The maximum
output value of the DAC is V
i(VREF)
.
7.14.1 Features
10-bit DAC
Resistor string architecture
Buffered output
Power-down mode
Selectable output drive
7.15 UARTs
The LPC2377/78 contain four UARTs. In addition to standard transmit and receive data
lines, UART1 also provides a full modem control handshake interface.
The UARTs include a fractional baud rate generator. Standard baud rates such as 115200
can be achieved with any crystal frequency above 2 MHz.
7.15.1 Features
16 B Receive and Transmit FIFOs.
Register locations conform to 16C550 industry standard.
Receiver FIFO trigger points at 1 B, 4 B, 8 B, and 14 B.
Built-in fractional baud rate generator covering wide range of baud rates without a
need for external crystals of particular values.
Fractional divider for baud rate control, auto baud capabilities and FIFO control
mechanism that enables software flow control implementation.
UART1 equipped with standard modem interface signals. This module also provides
full support for hardware flow control (auto-CTS/RTS).
UART3 includes an IrDA mode to support infrared communication.
7.16 SPI serial I/O controller
The LPC2377/78 contain one SPI controller. SPI is a full duplex serial interface designed
to handle multiple masters and slaves connected to a given bus. Only a single master and
a single slave can communicate on the interface during a given data transfer. During a
data transfer the master always sends 8 bits to 16 bits of data to the slave, and the slave
always sends 8 bits to 16 bits of data to the master.
7.16.1 Features
Compliant with SPI specification
Synchronous, Serial, Full Duplex Communication
Combined SPI master and slave
Maximum data bit rate of one eighth of the input clock rate
8 bits to 16 bits per transfer
LPC2377_78 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 6.1 — 16 October 2013 26 of 69
NXP Semiconductors
LPC2377/78
Single-chip 16-bit/32-bit microcontrollers
7.17 SSP serial I/O controller
The LPC2377/78 contain two SSP controllers. The SSP controller is capable of operation
on a SPI, 4-wire SSI, or Microwire bus. It can interact with multiple masters and slaves on
the bus. Only a single master and a single slave can communicate on the bus during a
given data transfer. The SSP supports full duplex transfers, with frames of 4 bits to 16 bits
of data flowing from the master to the slave and from the slave to the master. In practice,
often only one of these data flows carries meaningful data.
7.17.1 Features
Compatible with Motorola SPI, 4-wire TI SSI, and National Semiconductor Microwire
buses
Synchronous serial communication
Master or slave operation
8-frame FIFOs for both transmit and receive
4-bit to 16-bit frame
DMA transfers supported by GPDMA
7.18 SD/MMC card interface
The Secure Digital and Multimedia Card Interface (MCI) allows access to external SD
memory cards. The SD card interface conforms to the SD Multimedia Card Specification
Version 2.11.
7.18.1 Features
The MCI provides all functions specific to the SD/MMC memory card. These include
the clock generation unit, power management control, and command and data
transfer.
Conforms to Multimedia Card Specification v2.11.
Conforms to Secure Digital Memory Card Physical Layer Specification, v0.96.
Can be used as a multimedia card bus or a secure digital memory card bus host. The
SD/MMC can be connected to several multimedia cards or a single secure digital
memory card.
DMA supported through the GPDMA controller.
7.19 I
2
C-bus serial I/O controllers
The LPC2377/78 contain three I
2
C-bus controllers.
The I
2
C-bus is bidirectional, for inter-IC control using only two wires: a Serial Clock Line
(SCL), and a Serial DAta line (SDA). Each device is recognized by a unique address and
can operate as either a receiver-only device (e.g., an LCD driver) or a transmitter with the
capability to both receive and send information (such as memory). Transmitters and/or
receivers can operate in either master or slave mode, depending on whether the chip has
to initiate a data transfer or is only addressed. The I
2
C-bus is a multi-master bus and can
be controlled by more than one bus master connected to it.
The I
2
C-bus implemented in LPC2377/78 supports bit rates up to 400 kbit/s (Fast
I
2
C-bus).
LPC2377_78 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 6.1 — 16 October 2013 27 of 69
NXP Semiconductors
LPC2377/78
Single-chip 16-bit/32-bit microcontrollers
7.19.1 Features
I
2
C0 is a standard I
2
C compliant bus interface with open-drain pins.
I
2
C1 and I
2
C2 use standard I/O pins and do not support powering off of individual
devices connected to the same bus lines.
Easy to configure as master, slave, or master/slave.
Programmable clocks allow versatile rate control.
Bidirectional data transfer between masters and slaves.
Multi-master bus (no central master).
Arbitration between simultaneously transmitting masters without corruption of serial
data on the bus.
Serial clock synchronization allows devices with different bit rates to communicate via
one serial bus.
Serial clock synchronization can be used as a handshake mechanism to suspend and
resume serial transfer.
The I
2
C-bus can be used for test and diagnostic purposes.
7.20 I
2
S-bus serial I/O controllers
The I
2
S-bus provides a standard communication interface for digital audio applications.
The I
2
S-bus specification defines a 3-wire serial bus using one data line, one clock line,
and one word select signal. The basic I
2
S connection has one master, which is always the
master, and one slave. The I
2
S interface on the LPC2377/78 provides a separate transmit
and receive channel, each of which can operate as either a master or a slave.
7.20.1 Features
The interface has separate input/output channels each of which can operate in master
or slave mode.
Capable of handling 8-bit, 16-bit, and 32-bit word sizes.
Mono and stereo audio data supported.
The sampling frequency can range from 16 kHz to 48 kHz (16 kHz, 22.05 kHz,
32 kHz, 44.1 kHz or 48 kHz).
Configurable word select period in master mode (separately for I
2
S input and output).
Two 8 word FIFO data buffers are provided, one for transmit and one for receive.
Generates interrupt requests when buffer levels cross a programmable boundary.
Two DMA requests, controlled by programmable buffer levels. These are connected
to the GPDMA block.
Controls include reset, stop and mute options separately for I
2
S input and I
2
S output.

LPC2378FBD144,551

Mfr. #:
Manufacturer:
NXP Semiconductors
Description:
ARM Microcontrollers - MCU ARM7 512KF/USB/ENET
Lifecycle:
New from this manufacturer.
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