The IS43TR16256A-125KBLI is an industrial wide-temperature 4Gbit DDR3 SDRAM from ISSI, organized as 256M×16bit with 512MB effective capacity. Packaged in 96-TFBGA, it supports DDR3-1600 speed grade (12.5ns) with standard 1.5V supply. It integrates 8 independent banks, ZQ impedance calibration, dynamic ODT and auto self-refresh. Designed for industrial, automotive and outdoor harsh environments, it serves as high-speed system RAM and data buffer for embedded and FPGA image systems.
Specifications
Capacity: 4Gbit / 512MB (256M×16bit)
Type: DDR3 SDRAM, 8-prefetch architecture
Data Width: 16bit
Speed Grade: -125K, 800MHz clock, 1600Mbps data rate
Supply Voltage: 1.5V (1.425V~1.575V tolerance)
Package: 96-TFBGA (9×13mm)
Temperature: -40℃~+95℃ ultra-wide industrial range
Internal Architecture: 8 independent banks for parallel access
Burst Length: Programmable BL4 / BL8
Key Functions: Auto self-refresh, ZQ calibration, ODT on-die termination, DQM data mask
Key Features
Ultra-wide temperature range -40℃~+95℃ adapts to automotive, outdoor and high-temperature industrial scenarios
16-bit standard width matches low-cost ARM MCU and FPGA embedded systems
8-bank parallel architecture reduces read/write conflicts and improves system throughput and real-time performance
Automatic ZQ calibration ensures excellent high-speed signal integrity and simplifies PCB debugging
Built-in ODT eliminates external termination resistors, optimizing BOM cost and PCB layout
Typical Applications
System RAM for industrial HMI, touch screens and PLC main control systems
High-speed frame buffer for FPGA machine vision, image and video acquisition systems
Packet forwarding cache for industrial gateways, routers and IoT terminals
Embedded systems for vehicle industrial equipment, outdoor detectors and high-temperature control devices
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