LPC2131 View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
LPC2131
Philips Electronics
'LPC2131' PDF : 41 Pages View PDF
Philips Semiconductors
LPC2131/2132/2134/2136/2138
Single-chip 16/32-bit microcontrollers
6.15 SPI serial I/O controller
The LPC2131/2132/2134/2136/2138 each contain one SPI controller. The SPI is a full
duplex serial interface, designed to be able 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
a byte of data to the slave, and the slave always sends a byte of data to the master.
6.15.1 Features
• Compliant with Serial Peripheral Interface (SPI) specification.
• Synchronous, Serial, Full Duplex, Communication.
• Combined SPI master and slave.
• Maximum data bit rate of one eighth of the input clock rate.
6.16 SSP serial I/O controller
The LPC2131/2132/2134/2136/2138 each contain one Serial Synchronous Port controller
(SSP). 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. However, 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. Often only one of these data flows
carries meaningful data.
6.16.1 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.
• Four bits to 16 bits per frame.
6.17 General purpose timers/external event counters
The Timer/Counter is designed to count cycles of the peripheral clock (PCLK) or an
externally supplied clock, and optionally generate interrupts or perform other actions at
specified timer values, based on four match registers. It also includes four capture inputs
to trap the timer value when an input signal transitions, optionally generating an interrupt.
Multiple pins can be selected to perform a single capture or match function, providing an
application with ‘or’ and ‘and’, as well as ‘broadcast’ functions among them.
At any given time only one of peripheral’s capture inputs can be selected as an external
event signal source, i.e., timer’s clock. The rate of external events that can be successfully
counted is limited to PCLK/2. In this configuration, unused capture lines can be selected
as regular timer capture inputs.
6.17.1 Features
• A 32-bit Timer/Counter with a programmable 32-bit Prescaler.
9397 750 14868
Preliminary data sheet
Rev. 02 — 15 April 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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