Features 18-bit i80 CPU Display Interface Supports up to 640 x 480 VGA formats Differential SLVS Interface Dual displays supported WRITE and READ operations supported Robust Differential Physical Layer 400mVpp differential signal swing Internal 100 Ω Termination Resistor Low Power Consumption 5-bit CRC for data integrity Level translation between host and display Low Power sleep state 3.3V Tolerant Master Clock Input regardless of VDDIO Fast Start Up Time - 1k CLK cycles 1.6V to 2.0V core / analog supply voltage 1.6V to 3.0V I/O supply voltage range Description The LM4308 device adapts a 18-bit CPU style display interfaces to a MPL-2 SLVS differential serial link for displays. Two chip selects support a main and sub display up to and beyond 640 x 480 pixels. A mode pin configures the device as a Master (MST) or Slave (SLV). Both WRITE and READ operations are supported. CPU interface widths below 18-bits are supported by tieing unused inputs to a static level. The differential line drivers and receivers conform to the JEDEC SLVS Standard. When noise is picked up as common-mode, it is rejected by the receivers. This is further enhanced with the 50 Ohm output impedance of the drivers. The 100 Ohm termination is integrated into the receivers. Data integrity is insured with a 5-bit CRC field. CRC checking is done for both WRITE and READ operations. An Error (ERR) pin reports the occurrence of an error. A Write Only mode is also provided. The interconnect is reduced from 23 signals to only 4 active signals with the LM4308 chipset easing flex interconnect design, size constraints and cost. A low power sleep state entered when the PD* inputs are driven low.

Typical Application click for larger image	Connection Diagram click for larger image

Datasheets

Title		Size	Date	Other Language
	LM4308 Mobile Pixel Link Two (MPL-2) - 18-bit CPU Display Interface Master/Slave	1105 Kbytes	11-Sep-07

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LM4308GR/NOPB RoHS Status	MICRO-ARRAY	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 1939 MOUSER Worldwide 1000	$2.00 each at 1K+ pcs	reel of 1000
LM4308GRX/NOPB RoHS Status	MICRO-ARRAY	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$2.00 each at 1K+ pcs	reel of 3500
LM4308SQ/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 999 MOUSER Worldwide 1000	$2.00 each at 1K+ pcs	reel of 1000
LM4308SQX/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$2.00 each at 1K+ pcs	reel of 4500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM4308.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM4308 is located at RoHS Status.

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LM4308GR/NOPB	33.444	MICRO-ARRAY	49	1	260	Detail	Download	N/A	NS UZXYTT L4308GR
LM4308GRX/NOPB	33.444	MICRO-ARRAY	49	1	260	Detail	Download	N/A	NS UZXYTT L4308GR
LM4308SQ/NOPB	65.728	LLP	40	3	260	Detail	Download	N/A	NS UZXYTT L4308SQ
LM4308SQX/NOPB	65.727	LLP	40	3	260	Detail	Download	N/A	NS UZXYTT L4308SQ

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM4308.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM4308 is located at RoHS Status.

CAD Symbols and Models Download LM4308 CAD Symbols

Models N/A

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LM4308GR	CMOS9T	0	2160	0	0	2397152	2	680198425
LM4308GRX	CMOS9T	0	2160	0	0	2397152	2	680198425
LM4308SQ	CMOS9T	0	2160	0	0	2397152	2	680198425
LM4308SQX	CMOS9T	0	2160	0	0	2397152	2	680198425

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LM4308.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LM4308 is located at RoHS Status.