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LY68L6400SLIT

64Mb 3.3V SPI/QPI PSRAM, 133MHz, 8Mx8, self-refresh, SOP-8, tape&reel

8915

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Pieza del fabricante：

LY68L6400SLIT

Paquete：

SOP-8 (150mil)

Descripción

Productos

The LY68L6400SLIT is a 64Mb (8M x 8-bit) Serial Pseudo-SRAM (PSRAM) from Lyontek Inc., operating at 3.3V with SPI/QPI interface. It features a clock rate up to 133 MHz (wrapped burst) and 84 MHz (linear burst with page boundary crossing), with self-managed refresh. The SLIT variant is packaged in an 8-pin 150mil SOP with tape & reel packing, widely used in embedded systems including ESP32 and Raspberry Pi RP2350.

Especificaciones

Densidad	64Mb (8M x 8 bits)
Tensión de alimentación	2,7 V a 3,6 V
Interface	SPI / QPI (SDR mode)
Max Clock Rate	133 MHz (wrapped), 84 MHz (linear crossing)
Page Size	1024 bytes
Burst Mode	Linear or 32-byte wrapped
Refresh	Self-managed
Standby Current	200 µA max @ 85°C
Operating Current	40 mA max
Temperatura de funcionamiento	-40°C to +85°C
Paquete	SOP-8 (150mil)
Packing	Tape & Reel
Estado de las piezas	Activo

Características

64Mb SPI/QPI Serial Pseudo-SRAM at 3.3V
Self-managed refresh — no external DRAM refresh required
Clock rate up to 133 MHz (wrapped burst), 84 MHz (linear crossing)
Linear burst or 32-byte wrapped burst via toggle command
Software reset and built-in voltage sensor
50Ω output drive strength LVCMOS
Tape & reel packing for automated assembly
Green / RoHS compliant package

Aplicaciones

ESP32 / RP2350 external PSRAM expansion
Wearable and IoT devices
Portable consumer electronics
Smart home appliances
Microcontroller external RAM

Introducción del producto:LY68L6400SLIT Presentación del producto

The LY68L6400SLIT is a 64Mb (8M x 8-bit) Serial Pseudo-SRAM from Lyontek Inc. operating at 2.7V to 3.6V with SPI and QPI interfaces. The device features self-managed refresh, eliminating the need for external DRAM refresh control. With clock rates up to 133 MHz in wrapped burst mode and 84 MHz in linear burst with page boundary crossing, it delivers high bandwidth for embedded applications. The 8-pin 150mil SOP package with tape & reel packing is widely used in ESP32 and Raspberry Pi RP2350 PSRAM expansion designs.

Principio de funcionamiento:LY68L6400SLIT Principio de funcionamiento

The LY68L6400 operates as a serial pseudo-SRAM using an internal DRAM array with integrated refresh management. In SPI mode, data is transferred serially via SI/SIO[0] and SO/SIO[1]. In QPI mode, all four data lines SIO[0:3] transfer data simultaneously for 4x bandwidth. An internal refresh controller autonomously refreshes the DRAM cells. Linear burst mode allows continuous reads across page boundaries at up to 84 MHz, while wrapped burst reaches 133 MHz. Software reset restores the device to default state.

Descripción de la clavija:LY68L6400SLIT Definición y funciones de las clavijas

Pin	Nombre	Tipo	Función
1	CE#	Entrada	Chip select, active low
2	SO/SIO[1]	E/S	Serial output / Quad data[1]
3	SIO[2]	E/S	Quad data[2] / WP#
4	VSS	Potencia	Suelo
5	SI/SIO[0]	E/S	Serial input / Quad data[0]
6	SCLK	Entrada	Clock signal
7	SIO[3]	E/S	Quad data[3] / HOLD#
8	VCC	Potencia	3.3V supply