Serial Flash Memory is a type of non-volatile memory that stores digital information in a series of memory cells, typically organized in an array of rows and columns. Unlike RAM (Random Access Memory), which loses its data when power is removed, flash memory retains data even when power is turned off. Serial flash memory is characterized by its serial interface, meaning data is accessed and written one bit at a time through a single data line, as opposed to parallel flash memory that transfers multiple bits simultaneously through multiple lines.

Part Number: GD25Q16

Function: 16Mbit, Serial Flash Memory

Package: SOP 8 Pin Type

Manufacturer: GigaDevice

Images:

Description

The GD25Q16 (16M-bit) Serial flash supports the standard Serial Peripheral Interface (SPI), and the Dual/Quad SPI: Serial Clock, Chip Select, Serial Data I/O0 (SI), I/O1 (SO), I/O2 (WP#), I/O3 (HOLD#). The Dual I/O data is transferred with speed of 266Mbit/s, and the Quad I/O data is transferred with speed of 532Mbit/s.

Features

1. 16M-bit Serial Flash -2048K-byte -256 bytes per programmable page

2. Standard, Dual, Quad SPI -Standard SPI: SCLK, CS#, SI, SO, WP#, HOLD# -Dual SPI: SCLK, CS#, IO0, IO1, WP#, HOLD# -Quad SPI: SCLK, CS#, IO0, IO1, IO2, IO3

3. High Speed Clock Frequency -120MHz for fast read with 30PF load -Dual I/O Data transfer up to 180Mbits/s -Quad I/O Data transfer up to 360Mbits/s

4. Program/Erase Speed -Page Program time: 0.7ms typical -Sector Erase time: 100ms typical -Block Erase time: 0.3/0.4/0.8s typical -Chip Erase time: 16s typical

5. Flexible Architecture -Sector of 4K-byte -Block of 32/64/128K-byte

6. Low Power Consumption -20mA maximum active current -5uA maximum power down current

7. Software/Hardware Write Protection -Write protect all/portion of memory via software -Enable/Disable protection with WP# Pin -Top or Bottom, Sector or Block selection

8. Minimum 100,000 Program/Erase Cycles Note: 1.Please contact Gigadevice for details.

9. Advanced security Features(1) -16-Bit Customer ID -Security Architecture

10. Single Power Supply Voltage -Full voltage range:2.7~3.6V  […]

GD25Q16 Datasheet

This post explains for the NAND Flash Memory.

The Part Number is H27UCG8T2BTR-BC.

The function of this semiconductor is F20 64Gb MLC NAND Flash Memory.

The package is TSOP 48 Pin Type

Manufacturer: Hynix

Preview images :

Description

The product part No. H27UCG8T2BTR-BC is a single 3.3V 64Gbit NAND flash memory. The Device contains 2 planes in a single die. Each plane is made up of the 1066 blocks. Each block consists of 256 programmable pages.

Each page contains 17,664 bytes. The pages are subdivided into an 16,384 byte main data storage area with a spare 1,280 byte district. Page program operation can be performed in typical 1500us, and a single block can be erased in typical 5ms. […]

Feature:

1. Multi Level Cell (MLC) Technology

2. Power Supply Voltage
– VCC / VCCq= 2.7V ~ 3.6V

3. Organization
– Page Size : 16,384 + 1,280(Spare) bytes
– Block Size : 4M + 320K bytes, 256pages
– Plane Size : 1024 + 42(Extended) blocks
– Device Size : 2048 + 84(Extended) blocks

4. Page Read Time
– Random Read Time (tR) : 65us
– Sequential Access (tRC/tWC) : 16ns(Min.)

5. Page Write Time
– Page Program Time : 1500(Typ.)

6. Block Erase Time
– Block Erase Time : 5.0ms(Typ.)

7. Hardware Data Protection
– Program/Erase locked during power transitions

H27UCG8T2BTR-BC Datasheet