LM3S308 Luminary Micro, Inc, LM3S308 Datasheet - Page 332

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LM3S308

Manufacturer Part Number
LM3S308
Description
Lm3s308 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet

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Inter-Integrated Circuit (I
14
14.1
14.2
332
Inter-Integrated Circuit (I
The Inter-Integrated Circuit (I
(a serial data line SDA and a serial clock line SCL), and interfaces to external I
serial memory (RAMs and ROMs), networking devices, LCDs, tone generators, and so on. The I
bus may also be used for system testing and diagnostic purposes in product development and
manufacture. The LM3S308 microcontroller includes one I
(both send and receive) with other I
Devices on the I
supports both sending and receiving data as either a master or a slave, and also supports the
simultaneous operation as both a master and a slave. There are a total of four I
Transmit, Master Receive, Slave Transmit, and Slave Receive. The Stellaris
operate at two speeds: Standard (100 Kbps) and Fast (400 Kbps).
Both the I
a transmit or receive operation completes (or aborts due to an error) and the I
interrupts when data has been sent or requested by a master.
Block Diagram
Figure 14-1. I
Functional Description
I
peripherals. For proper operation, the SDA and SCL pins must be connected to bi-directional
open-drain pads. A typical I
See “I
2
C module is comprised of both master and slave functions which are implemented as separate
Interrupt
2
C” on page 391 for I
2
C master and slave can generate interrupts; the I
2
C) Interface
I2CMTPR
I2CMIMR
2
I2CMRIS
I2CMMIS
I2CMICR
I2CMDR
I2CMCR
I2CMSA
I2CMCS
C Block Diagram
2
C bus can be designated as either a master or a slave. The Stellaris
I
2
C Control
2
2
C timing diagrams.
C bus configuration is shown in Figure 14-2 on page 333.
2
I2CSOAR
I2CSCSR
I2CSRIS
I2CSMIS
I2CSICR
I2CSDR
I2CSIM
C) bus provides bi-directional data transfer through a two-wire design
2
C devices on the bus.
Preliminary
2
I
2
I
C) Interface
2
C Master Core
C Slave Core
2
C module, providing the ability to interact
2
C master generates interrupts when
I2CSCL
I2CSDA
I2CSCL
I2CSDA
I
2
®
C I/O Select
2
I
2
2
C slave generates
2
C module can
C devices such as
C modes: Master
June 04, 2008
®
I
2
C module
I2CSCL
I2CSDA
2
C

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