Technical Summary: 62G36128 Synchronous Memory Component

Overview

The 62G36128 is a high-performance 4M-bit synchronous memory component designed for applications requiring fast data access and high bandwidth. Operating at frequencies between 200MHz and 250MHz, this device is ideal for high-speed computing, networking, and telecommunications applications. The 62G36128 features a 128Kx36 memory configuration with HSTL-compatible I/O, programmable impedance output drivers, and a BGA 119-pin package for compact and efficient PCB integration.

Features

• 3.3V Operation: Supports 3.3V ±10%/-5% power supply.
• High-Speed Performance: Operates at 200MHz to 250MHz frequencies.
• Synchronous Operation: Ensures precise timing with clocked data transfers.
• Internal Self-Timed Late Write: Enhances write operation efficiency.
• Byte Write Control: Four byte write selects (one for each 9 bits) for granular data handling.
• Optional x18 Configuration: Provides flexibility in data width.
• HSTL-Compatible I/O: Ensures compatibility with high-speed transceiver logic.
• Programmable Impedance Output Drivers: Allows tuning for signal integrity.
• User-Selectable Input Trip Point: Customizable input threshold for signal detection.
• Differential HSTL Clock Inputs: Supports robust clocking in noisy environments.
• Asynchronous Output Control (G): Provides immediate output disable capability.
• Asynchronous Sleep Mode: Reduces power consumption during idle periods.
• BGA 119-Pin Package: Compact footprint for space-constrained designs.
• Limited Boundary Scan JTAG Support: IEEE 1149.1 compatible for testing.
• Protocol: Single Clock Register-Register Mode for simplified timing.

Applications

The 62G36128 is suitable for a wide range of high-performance applications, including:

• Networking Equipment: Routers, switches, and network interface cards requiring high-speed data buffering.
• Telecommunications: Base stations and signal processing units needing low-latency memory.
• Computing Systems: Servers and workstations with demanding memory bandwidth requirements.
• Embedded Systems: High-reliability applications such as aerospace and defense electronics.
• Data Storage: Cache memory and temporary storage in SSDs and RAID controllers.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (VDD, VDDQ): -0.5V to +4.0V
• Input Voltage: -0.5V to VDDQ + 0.5V
• Operating Temperature: -40°C to +85°C
• Storage Temperature: -55°C to +125°C

Recommended Operating Conditions

• Core Supply Voltage (VDD): 3.3V ±10%/-5%
• Output Supply Voltage (VDDQ): 3.3V ±10%/-5%
• Reference Voltage (VREF): 0.5 × VDDQ
• Clock Frequency: 200MHz to 250MHz

Timing Parameters

• Access Time (tAC): 2.2ns (HM62G36128BP-4), 2.5ns (HM62G36128BP-5)
• Cycle Time (tCYC): 4.0ns (HM62G36128BP-4), 5.0ns (HM62G36128BP-5)

Package Information

BGA 119-Pin Package Details

• Package Type: BGA (Ball Grid Array)
• Pin Count: 119
• Dimensions: 14mm × 22mm (BP-119A)
• Ball Pitch: 1.27mm

Pin Arrangement (Top View)

The pin arrangement is organized into a grid with alphanumeric designations (A-P, R, T). Key pins include:

• VDD/VSS: Power and ground pins distributed across the package for stable operation.
• VDDQ: Output driver power supply pins.
• VREF: Reference voltage input for HSTL I/O.
• K/K: Differential clock inputs (active high).
• DQa0-8, DQb0-8, DQc0-8, DQd0-8: Data I/O pins (36-bit total).
• SA0-SA16: Address inputs.
• SWEa-SWEd: Byte write enable controls.
• JTAG Pins (TMS, TDI, TCK, TDO): Boundary scan test interface.

Functional Description

The 62G36128 operates in synchronous mode, with all data transfers synchronized to the rising edge of the input clock (K). The device supports late-write operations, where data is written to the memory array one cycle after the address is latched. Byte write controls (SWEa-SWEd) allow selective writing of 9-bit segments, enabling efficient partial updates. The programmable impedance output drivers and adjustable input trip point ensure signal integrity across varying PCB layouts.

Block Diagram Overview

The internal architecture consists of:

• Memory Cell Array: 128Kx36 organization with row and column decoders.
• Input/Output Registers: Data-in and data-out registers for pipelined operation.
• Control Logic: Manages clock synchronization, impedance control, and power modes.
• JTAG Interface: Enables boundary scan testing for PCB validation.

Ordering Information

• HM62G36128BP-5: 2.5ns access time, 5.0ns cycle time.
• HM62G36128BP-4: 2.2ns access time, 4.0ns cycle time.