I2C-Interface Philips Semiconductors / NXP Semiconductors, I2C-Interface Datasheet - Page 6

• Manufacturer Part Number: I2C-Interface
• Description: Programming the 12C Interface
• Manufacturer: Philips Semiconductors / NXP Semiconductors

Exploriizg
IC
dressed.
advantage
pie-mastermg capabilities.
available to developers IS the PC bus
promulgated
Sunnyvale. Calif. IT allows you to set
Generation
fers nothing towards achievmg multi-
Figure 1
2
l*C Specific information
lips Semiconductors
One of the more versattle options
The added
to developers,
of acknowledge.
_.-
---v-
by Philips/Signetics
-
wiring
and the bus
B
offers no
-
of-
m
-
up a
commumcattons bus wtth conflict arbi-
tration. usmg only twtsted-patr wirmg
to connect the processors and peripher-
als. Philips/Signettcs
port this protocol (which is quote popu-
lar in Europe) with a large assortment
of interesting doodads. and is actively
---
-
multtple-master.
-
has moved tosup-
74
multiple-slave
Open-collector
configuration
means that the
output stage can
jotn m the fun. If your next design fea-
cle illustrates. your reward could be a
only pull the node
to ground.
encouragmg
tures a mrcroprocessor that supports
decreased
consumption-along
able distributed-programming
for peripheral devices.
cols noted above. since only two wires
are required to service a large network
of addressable masters and addressable
slaves. A third wire may be added if in-
lips/Signetrcs mrcroprocessors featur-
ing PC support feature on-chip cir-
cuttry and are capable of interruptmg
the processor upon receipt of a valid
address.
HOW 1% WORKS
directional.
everything on the bus 1s equal, unlike
as SPI or MicroWire, which have dedi-
cated inputs and outputs. Each PC
open collector of output and input. The
PC or you are prepared to implement
PC in software using a PIA as this arti-
terrupt service is required. though Phi-
T
PC bus is that each of these lines is bi-
most other serial-peripheral busses such
transaction line (SCL and SDA) is an
PC is more flexible than the proto-
he PC bus consists of two lines:
serial clock (SCL) and serial
data (SDA). The beauty of the
chip count and
Bidirectional means that
other manufacturers
wtth a comfort-
Exploring l*C
lower power
model
to