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Renesas Electronics Corporation

Renesas’ Timing product portfolio has been acquired by SiTime.

Datasheets, documentation, and sample orders remain available on Renesas.com through late 2026. For new designs, purchasing, support, and product inquiries, visit SiTime.com or send an email to [email protected]. Full transition to SiTime is expected by late 2026.

Programmable System Clock Chip for ATI RS790 - K8 Based Systems

Package Information

CAD Model:View CAD Model
Pkg. Type:VFQFPN
Pkg. Code:NLG64
Lead Count (#):64
Pkg. Dimensions (mm):9.0 x 9.0 x 0.9
Pitch (mm):0.5

Environmental & Export Classifications

Pb (Lead) FreeYes
ECCN (US)EAR99
HTS (US)8542.39.0090
RoHS (9LPRS477DKLF)EnglishJapanese
Moisture Sensitivity Level (MSL)3

Product Attributes

Pkg. TypeVFQFPN
Lead Count (#)64
Pb (Lead) FreeYes
Carrier TypeTray
App Jitter CompliancePCIe Gen1, PCIe Gen2
C-C Jitter Max P-P (ps)85
Chipset ManufacturerAMD, ATI
Chipset NameRS780, RS790, RD790, RS880
Core Voltage (V)3.3
Die FormNo
Diff. Output SignalingHCSL
Freq. Accuracy Init. (± PPM)100
Input Freq (MHz)14.32 - 14.32
Lead CompliantNo
Length (mm)9
MOQ207
Moisture Sensitivity Level (MSL)3
Output Freq Range (MHz)14.318 - 355
Output Skew (ps)100
Output Voltage (V)3.3V, 0.7V
Outputs (#)21
PCIe GenerationGen1, Gen2
Package Area (mm²)81
Pb Free Categorye3 Sn
Phase Jitter Max RMS (ps)3.1
Pitch (mm)0.5
Pkg. Dimensions (mm)9.0 x 9.0 x 0.9
Price (USD)$4.24894
Qty. per Carrier (#)207
Qty. per Reel (#)0
Reference OutputYes
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
Spread SpectrumYes
Supply Voltage (V)3.3 - 3.3
Tape & ReelNo
Temp. Range (°C)0 to 70°C
Thickness (mm)0.9
Width (mm)9
Xtal Freq (MHz)14.318 - 14.318
Xtal Inputs (#)1

Description

The 9LPRS477 is a main clock synthesizer chip that provides all clocks required for ATI RD7xx-based systems using AMD processors. An SMBus interface allows full control of the device.