HM5165805 Series 64M-bit Dynamic RAM

Overview

The Hitachi HM5165805F Series is a high-performance 64M-bit dynamic RAM organized as 8,388,608-word × 8-bit. Manufactured using advanced CMOS process technology, this component delivers both high-speed operation and low power consumption. The HM5165805F Series features Extended Data Out (EDO) Page Mode for enhanced access speeds, making it suitable for various memory-intensive applications. The device is available in standard 32-pin plastic SOJ and 32-pin TSOP packages, offering flexibility for different design requirements.

Features

• Single 3.3V Power Supply: Operates at 3.3V ± 0.3V, making it suitable for low-voltage applications.
• High-Speed Access Time: Maximum access times of 50 ns and 60 ns ensure rapid data retrieval.
• Low Power Consumption:
  • Active Mode: Maximum power dissipation of 486 mW (HM5165805F Series).
  • Standby Mode:
    • 1.8 mW (max) with CMOS interface.
    • 1.1 mW (max) for L-version.
• EDO Page Mode: Enhances performance by allowing faster sequential data access.
• Multiple Refresh Options:
  • RAS-only refresh
  • CAS-before-RAS refresh
  • Hidden refresh
  • Self refresh (L-version)
• Battery Backup Operation: Available in the L-version for low-power applications requiring extended operation.

Applications

The HM5165805F Series is designed for a wide range of applications, including:

• Computing Systems: Suitable for use in desktops, laptops, and servers requiring high-speed memory.
• Embedded Systems: Ideal for industrial and automotive embedded applications where reliability and performance are critical.
• Networking Equipment: Used in routers, switches, and other networking devices that demand efficient memory solutions.
• Consumer Electronics: Applicable in smart TVs, gaming consoles, and other multimedia devices.
• Battery-Powered Devices: The L-version is optimized for portable electronics, such as tablets and handheld devices, due to its low standby power consumption.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (V_CC): -0.5V to +4.6V
• Input Voltage (V_IN): -0.5V to V_CC + 0.5V
• Operating Temperature Range: 0°C to +70°C (commercial grade)
• Storage Temperature Range: -55°C to +125°C

DC Characteristics

• Input High Voltage (V_IH): 2.0V min (V_CC = 3.3V)
• Input Low Voltage (V_IL): 0.8V max (V_CC = 3.3V)
• Output High Voltage (V_OH): 2.4V min (I_OH = -4.0 mA)
• Output Low Voltage (V_OL): 0.4V max (I_OL = 8.0 mA)

AC Characteristics

• Access Time (t_AA): 50 ns / 60 ns (max)
• RAS Precharge Time (t_RP): 20 ns (min)
• CAS Hold Time (t_CH): 10 ns (min)
• Write Pulse Width (t_WP): 20 ns (min)

Package Information

The HM5165805F Series is available in two package options:

• 32-Pin Plastic SOJ (Small Outline J-Lead):
  • Package Dimensions: 10.16 mm × 20.95 mm (approx.)
  • Pin Pitch: 1.27 mm
• 32-Pin TSOP (Thin Small Outline Package):
  • Package Dimensions: 8 mm × 20 mm (approx.)
  • Pin Pitch: 0.8 mm

Ordering Information

The HM5165805F Series is available in multiple configurations, including variations for refresh cycles and power modes. Below are the standard ordering part numbers:

• HM5165805F: Standard version with 4096 refresh cycles / 64 ms.
• HM5165805FL: Low-power version with self-refresh capability and battery backup operation.

Conclusion

The HM5165805F Series offers a robust combination of high-speed performance, low power consumption, and flexible packaging options, making it an excellent choice for a variety of memory-intensive applications. Its advanced features, such as EDO Page Mode and multiple refresh options, ensure reliable operation in demanding environments. Whether used in computing systems, embedded applications, or portable electronics, the HM5165805F Series delivers the performance and efficiency required for modern designs.