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NXP Semiconductors Electronic Components Datasheet

PCU9669 Datasheet

Parallel bus to 1 channel Fm+ and 2 channel UFm I2C-bus controller

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PCU9669
Parallel bus to 1 channel Fm+ and 2 channel UFm I2C-bus
controller
Rev. 2 — 1 July 2011
Product data sheet
1. General description
The PCU9669 is an advanced single master mode I2C-bus controller. It is a fourth
generation bus controller designed for data intensive I2C-bus data transfers. It has three
independent I2C-bus channels, one of them with data rates up to 1 Mbits/s using the
Fast-mode Plus (Fm+) open-drain topology and two with a much larger transmit only
transfer rate of up to 5 Mbits/s using the new Ultra Fast-mode (UFm) bus with push-pull
topology. Each channel has a generous 4352 byte data buffer which makes the PCU9669
the ideal companion to any CPU that needs to transmit and receive large amounts of
serial data with minimal interruptions.
The PCU9669 is a 8-bit parallel-bus to I2C-bus protocol converter. It can be configured to
communicate with up to 64 slaves in one serial sequence with no intervention from the
CPU. The controller also has a sequence loop control feature that allows it to
automatically retransmit a stored sequence.
Its onboard oscillator and PLL allow the controller to generate the clocks for the I2C-bus
and for the interval timer used in sequence looping. This feature greatly reduces CPU
overhead when data refresh is required in fault tolerant applications.
An external trigger input allows data synchronization with external events. The trigger
signal controls the rate at which a stored sequence is re-transmitted over the I2C-bus.
Error reporting is handled at the transaction level, channel level, and controller level.
A simple interrupt tree and interrupt masks allow further customization of interrupt
management.
The controller parallel bus interface runs at 3.3 V and the I2C-bus I/Os logic levels are
referenced to a dedicated VDD(IO) input pin with a range of 3.0 V to 5.5 V.
2. Features and benefits
Parallel-bus to I2C-bus protocol converter and interface
5 Mbit/s unidirectional data transfer on Ultra Fast-mode (UFm) channel (push-pull
driver)
1 Mbit/s and up to 30 mA SCL/SDA IOL Fast-mode Plus (Fm+) capability
Internal oscillator trimmed to 1 % accuracy reduces external components
Individual 4352-byte buffers for the Fm+ and UFm channels for a total of 13056 bytes
of buffer space
Three levels of reset: individual software channel reset, global software reset, global
hardware RESET pin
Communicates with up to 64 slaves in one serial sequence


NXP Semiconductors Electronic Components Datasheet

PCU9669 Datasheet

Parallel bus to 1 channel Fm+ and 2 channel UFm I2C-bus controller

No Preview Available !

NXP Semiconductors
PCU9669
Parallel bus to 1 channel Fm+ and 2 channel UFm I2C-bus controller
Sequence looping with interval timer
Supports SCL clock stretching (Fm+ only)
JTAG port available for boundary scan testing during board manufacturing process
Trigger input synchronizes serial communication exactly with external events
Maskable interrupts
Fast-mode Plus I2C-bus capable and compatible with SMBus
Operating supply voltage: 3.0 V to 3.6 V (device and host interface)
I2C-bus I/O supply voltage: 3.0 V to 5.5 V
Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
ESD protection exceeds 8000 V HBM per JESD22-A114 and 1000 V CDM per
JESD22-C101
Packages offered: LQFP48
3. Applications
Add I2C-bus port to controllers/processors that do not have one
Add additional I2C-bus ports to controllers/processors that need multiple I2C-bus ports
Converts 8 bits of parallel data to serial data stream to prevent having to run a large
number of traces across the entire printed-circuit board
Entertainment systems
LED matrix control
Data intensive I2C-bus transfers
4. Ordering information
Table 1. Ordering information
Type number Topside
mark
Package
Name
PCU9669B
PCU9669 LQFP48
Description
plastic low profile quad flat package;
48 leads; body 7 7 1.4 mm
Version
SOT313-2
PCU9669
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 1 July 2011
© NXP B.V. 2011. All rights reserved.
2 of 69


Part Number PCU9669
Description Parallel bus to 1 channel Fm+ and 2 channel UFm I2C-bus controller
Maker NXP
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PCU9669 Datasheet PDF





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