PCA9661B: Parallel bus to 1 channel Fm+ I2C-bus controller
The PCA9661 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 one I²C-bus channel with data rates up to 1 Mbits/s using the Fast-mode Plus (Fm+) open-drain topology. The serial channel has a generous 4352 byte data buffer which makes the PCA9661 the ideal companion to any CPU that needs to transmit and receive large amounts of serial data with minimal interruptions.
The PCA9661 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.
Outline 3d SOT313-2
Data Sheets (2)
| Name/Description | Modified Date |
|---|---|
| Parallel bus to 1 channel Fm+ I2C-bus controller (REV 1.0) PDF (1.3 MB) PCA9661_JA_1 | 20 May 2016 |
| Parallel bus to 1 channel Fm+ I2C-bus controller (REV 1.0) PDF (1.1 MB) PCA9661 | 04 Aug 2011 |
Package Information (1)
| Name/Description | Modified Date |
|---|---|
| plastic low profile quad flat package; 48 leads; body 7 x 7 x 1.4 mm (REV 1.0) PDF (494.0 kB) SOT313-2 | 08 Feb 2016 |
Packing (1)
| Name/Description | Modified Date |
|---|---|
| LQFP48; Reel pack; SMD, 13" Q1/T1 Standard product orientation Orderable part number ending ,118 or... (REV 1.0) PDF (234.0 kB) SOT313-2_118 | 15 Apr 2013 |
Supporting Information (1)
| Name/Description | Modified Date |
|---|---|
| Footprint for wave soldering (REV 1.0) PDF (11.0 kB) HTQFP-HLQFP-LQFP-MSQFP-WAVE | 08 Oct 2009 |
Ordering Information
| Product | Status | Package version | Interrupt | Power-on reset | Operating Temperature (Cel) | I2C-bus interface | No of Addresses | I2C-bus (kHz) | Operating voltage (VDC) | Details |
|---|---|---|---|---|---|---|---|---|---|---|
| PCA9661B | Active | SOT313-2 | LQFP48 |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | EFR | IFR(FIT) | MTBF(hour) | MSL | MSL LF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PCA9661B | | SOT313-2 | HTQFP-HLQFP-LQFP-MSQFP-WAVE | Reel 13" Q1/T1 | Active | PCA9661B,118 (9352 956 78118) | PCA9661 | PCA9661B |    | Always Pb-free | 0.0 | 4.0 | 2.5E8 | 1 | 1 |
- SOT313-2 LPC1549JBD48
- HTQFP-HLQFP-LQFP-MSQFP-WAVE LPC54114J256BD64
- Reel 13" Q1/T1 LPC1342FBD48
- PCU9656B
