SRAM · DRAM · Embedded Flash

ISSI Memory for Embedded Systems

ISSI memory serves different parts of an embedded system: SRAM provides working storage without periodic refresh, SDRAM and DDR devices connect to a memory controller, and Flash retains firmware and data without power. Serial NOR, raw NAND and managed eMMC differ in access method and host responsibilities. Match the memory type to the controller before comparing capacity.

Submit an RFQ View part numbers

Products and applications

ISSI memory families and system roles

Core products

Working memory

SRAM for local working data

ISSI offers asynchronous and synchronous SRAM, including high-speed and low-power options. IS61/IS62 and automotive IS64/IS65 families address different operating needs. Compare access timing, bus organization, supply voltage and standby requirements; similar capacity does not mean the same interface.

View the ISSI SRAM selection tables

Controller-attached memory

SDRAM, DDR and low-power DRAM

ISSI DRAM spans SDR, DDR generations and mobile low-power families. These devices provide working memory for embedded processors and other controllers. The controller generation, data width, timing and voltage must agree with the device; temperature and package suffixes are part of the full ordering identity.

Read the ISSI DRAM part decoder

Nonvolatile code storage

Serial NOR for code and configuration

ISSI serial NOR includes SPI, Quad SPI and higher-width interface options. It stores boot code, firmware and configuration data; execution and boot support depend on the host. Confirm interface commands, address mode, voltage and package for the exact IS25 device rather than substituting by density alone.

View ISSI serial NOR families

Persistent data storage

Raw NAND and managed eMMC

ISSI supplies raw NAND and controller-managed eMMC for embedded storage. With raw NAND, the host design must meet the device error-correction and bad-block requirements. eMMC integrates NAND and a controller behind a standardized host interface, moving those media-management tasks into the device. They require different hardware and software support.

Explore ISSI managed eMMC storage

Lumissil product resources

IS31/IS32 LED-driver documentation

For IS31/IS32 LED-driver enquiries, use the current Lumissil product documentation. Its matrix and multichannel drivers control LED current and dimming, while switching drivers serve different power stages. Check channel arrangement, LED current, supply range and control interface against the exact part number.

View Lumissil LED drivers

Typical applications

Automotive systems

Automotive memory by system role

Instrument clusters, telematics, infotainment and ADAS use memory in different ways. ISSI automotive guidance maps SRAM, DRAM, NOR and eMMC to these workloads. Start with working-memory and persistent-storage needs separately, then confirm the exact device grade and qualification rather than assuming every member of a family is automotive-qualified.

View ISSI automotive memory guidance

Industrial embedded designs

Industrial equipment memory planning

An industrial controller may need fast local buffers, processor DRAM and nonvolatile code or event storage on the same board. ISSI industrial memory guidance separates these roles. Review the supported interface, operating temperature and write workload for each memory position before choosing its capacity and package.

View ISSI industrial memory options

ISSI part numbers

View all part numbers

Part number	Brand	Product type	Package	Quantity	Date code	RFQ
IS42S16400J-6TLI	ISSI	SDR SDRAM	54-pin TSOP II, Alloy42 leadframe, matte Sn	5400	2522	Request quote
IS31FL3733-TQLS4	ISSI	Matrix LED Driver	eTQFP-48	290000	2635	Request quote
IS61WV25616BLL-10BLI	ISSI	Asynchronous SRAM	48-ball mini BGA, 6 × 8 mm, lead-free	5760	2623	Request quote
IS31BL3508A-TTLS2-TR	ISSI	LED Backlight Driver	TSOT-23-6	6000	2538	Request quote
IS25LP128F-JKLA3-TR	ISSI	NOR Flash	8-contact WSON, 6 × 5 mm	—	Confirm by RFQ	Request quote
IS35ML04G084-TLA1	ISSI	Parallel NAND Flash	48-pin TSOP Type I	1109	2633	Request quote
IS32FL3240-QWLA3-TR	ISSI	LED Driver	WFQFN-40 6 × 6 mm	7500	2634	Request quote
IS46TR16512BL-125KBLA1	ISSI	DDR3L SDRAM	96-ball BGA, green	78906	2515	Request quote
IS21ES08GA-JCLI	ISSI	eMMC Storage	153-ball FBGA, 11.5 × 13 × 1.0 mm	—	Confirm by RFQ	Request quote
IS32LT3961-ZLA3-TR	ISSI	Buck LED Driver	eTSSOP-16	30000	2225	Request quote

Submit an RFQ for ISSI

Please provide the complete part number, required quantity and delivery requirements.

Submit an RFQ Email enquiry