Winbond Electronics Corporation W63AH6NBVADE

Overview

W63AH6NBVADE from Winbond is a 1Gb (128MB) LPDDR3 SDRAM with x32 data bus, 1.2V VDDQ supply, and 8-bank architecture, supporting up to 1066 MT/s data rates in double-data-rate mode. It operates across -25°C to +85°C and integrates on-die termination, partial array self-refresh (PASR), and CA training for mobile SoC memory interfaces.

For engineers reviewing the W63AH6NBVADE datasheet, W63AH6NBVADE pinout, W63AH6NBVADE application, or W63AH6NBVADE equivalent, key selection criteria include LPDDR3-1066 timing compliance, x32 interface width, 1.2V I/O voltage tolerance, and ball-grid package compatibility with mobile AP memory controllers.

Technical Context

This device implements a synchronous, double-data-rate command/address bus with 10-bit CA lines multiplexed for commands, row/column addresses, and bank select. It supports burst lengths of 4 and 8, auto-precharge, and programmable mode registers for configuration of ODT, PASR, calibration, and temperature sensing.

Power management includes deep power-down, self-refresh, and partial array self-refresh modes - all controlled via mode register writes. Timing compliance follows JEDEC JESD209-3B for LPDDR3, with tCK(min) = 0.94 ns (1066 MT/s), tRCD = 13.5 ns, and tRP = 13.5 ns at 85°C.

Key Specifications

Pinout & Package

W63AH6NBVADE uses a 130-ball FBGA package (10 mm × 12 mm × 0.8 mm height) with 0.5 mm pitch and RoHS-compliant matte tin finish. Ball assignment follows JEDEC MO-270DA standard for LPDDR3 x32 devices.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LPDDR3 memory applications.

Compared with W63AH6NBVADE, MT52L1G32D2PF-107 offers identical electrical specs but requires firmware adaptation for ZQ calibration, while K4E6E304EC-EGCF omits CA training - simplifying bring-up but limiting maximum reliable speed in electrically noisy layouts.

Availability

W63AH6NBVADE is available at Aetrix Electronics and suitable for smartphone AP memory, tablet SoC integration, and industrial handheld terminal designs requiring stable component supply, long-term lifecycle support, and LPDDR3-1066 timing compliance.

Supply support for W63AH6NBVADE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Winbond Electronics is a Taiwan-based semiconductor company specializing in specialty memory solutions including SPI NOR Flash, RAM, and mobile DRAM.

The W63AH6NBVADE belongs to Winbond's LPDDR3 product line designed specifically for power-constrained, high-performance mobile and embedded systems requiring JEDEC-compliant low-voltage memory with advanced power management.

FAQ

What is the exact memory organization of the W63AH6NBVADE?

The W63AH6NBVADE is organized as 8 banks × 16,384 rows × 1,024 columns × 32 bits, totaling 1,073,741,824 bits (1 Gb). This x32 configuration delivers 4-byte-wide data transfers per clock edge and is optimized for mobile SoC memory controllers with native x32 LPDDR3 support. The W63AH6NBVADE does not support x16 mode switching - it is fixed x32.

Does the W63AH6NBVADE support on-die termination (ODT) and how is it configured?

Yes, the W63AH6NBVADE supports programmable on-die termination via MR11 (MA[7:0] = 0BH). It provides selectable ODT values including RTT_NOM (34Ω), RTT_WR (120Ω), and dynamic disable. ODT is active during reads, writes, and CA training, and can be disabled during self-refresh or deep power-down. Configuration requires MRW command and is validated per JEDEC JESD209-3B.

What is the role of CA training in the W63AH6NBVADE and which mode registers control it?

CA training in the W63AH6NBVADE compensates for flight-time mismatches on the 10-bit command/address bus at 1066 MT/s. It is controlled through MR41 (CA Training_1), MR42 (CA Training_2), and MR48 (CA Training_3), accessed via MRR/MRW commands. The W63AH6NBVADE requires CA training before stable high-speed operation - skipping it risks command decode errors and initialization failure.

Can the W63AH6NBVADE operate outside the standard LPDDR3 temperature range?

No - the W63AH6NBVADE is specified for operation from -25°C to +85°C only. It is not qualified for automotive-grade (-40°C to +125°C) or extended industrial (-40°C to +105°C) ranges. Operation outside this range may cause timing violations, increased bit error rates, or failure to exit self-refresh. The W63AH6NBVADE includes an internal temperature sensor (readable via MRR from MR4) but does not extend its rated operating envelope.

How does Partial Array Self-Refresh (PASR) reduce power in the W63AH6NBVADE?

PASR in the W63AH6NBVADE reduces self-refresh current by selectively refreshing only active memory segments. It uses MR16 (PASR Bank Mask) and MR17 (PASR Segment Mask) to disable refresh in unused banks or 1/2/4/8 segments. At 85°C, IDD6 drops from 35 mA (full array) to as low as 21 mA (1-bank active), extending battery life in display-off or background-task states without compromising data retention in active regions. This feature is fully supported in the W63AH6NBVADE.