Part: W35N01JWxxxG/T — Winbond

Type: Serial SLC NAND Flash Memory

Description: 1.8V 1G-bit Serial SLC NAND Flash Memory with Octal SPI interface, supporting 166 MHz SDR and 120 MHz DDR buffer read and continuous read modes.

Operating Conditions:

• Supply voltage: 1.8 V
• Max SDR clock frequency: 166 MHz
• Max DDR clock frequency: 120 MHz

Key Specs:

• Memory Capacity: 1 G-bit
• Interface: Octal SPI (OSPI)
• Single Data Rate (SDR) Clock: 166 MHz
• Double Data Rate (DDR) Clock: 120 MHz
• Block Erase Size: 256 KB
• Read Modes: Buffer Read, Continuous Read
• ECC: Integrated ECC support
• Bad Block Management: Supported

Features:

• 1 G-bit SLC NAND Flash
• Octal SPI (OSPI) interface
• Single Data Rate (SDR) and Double Data Rate (DDR) modes
• Buffer Read and Continuous Read modes
• Integrated ECC
• Bad Block Management
• Software and Hardware Reset options

• New Octal DDR Serial NAND Memories
• W35N01JW: 1G-bit / 128M-Byte
• Supported Synchronous Bus I/F
• Byte-Wide (x8) Multiplexed Synchronous IO
• Single Data Rate and Double Data Rate
• DDR Bus Mode
• Octal Double Data Rate (ODDR) protocol: CLK, /CS, IO[7:0], DS, /Reset
• SDR Bus Mode
• Octal SPI (OSPI) and OSPI DDR protocol: CLK, /CS, IO[7:0] /WP, /Reset
• Standard SPI protocol (SPI): CLK, /CS, IO0, IO1, /WP, /Reset
• Clock Frequency
• 166MHz SDR max (166MB/s)
• 120MHz DDR max (240MB/s) with DS
• Efficient 'Continuous Read Mode' (1)
• Alternative method to the Buffer Read Mode
• No need to issue 'Page Data Read' between Read commands
• Allows direct read access to the entire array
• Flexible Architecture with 256KB blocks
• Uniform 256K-Byte Block Erase
• Flexible page data load methods
• Advanced Features
• On-chip 1-Bit ECC for memory array
• ECC status bits indicate ECC results
• Bad Block Management and LUT (2) access
• Software and Hardware Write-Protect
• Power Supply Lock-Down and OTP protection
• Unique ID and parameter pages
• Ten 4KB OTP pages (3)
• Space Efficient Packaging
• 24-ball TFBGA 8x6-mm
• Contact Winbond for other package options

1. Only the Read command structures are different between the 'Continuous Read Mode (BUF=0)' and the 'Buffer Read Mode (BUF=1)', all other commands are identical W35N01JWxxxG: Default BUF=1 after power up W35N01JWxxxT: Default BUF=0 after power up
2. LUT stands for Look-Up Table
3. OTP pages can only be programmed

• 5 - Revision A

CH347T TSSOP-20 Pinout

Notes

• USB pins (UD+/UD-): Must NOT be connected in series with resistors per datasheet specification; direct connection required for signal integrity.
• Power supply: VCC supports both 3.3V and 5V operation.
• Multi-function pins: Most I/O pins support multiple alternate functions (UART, SPI, I2C, GPIO, JTAG). Function selection is typically configured via firmware or control registers.
• Crystal pins (XI/XO): Used for external clock/crystal oscillator connection.
• GND pins: Pins 17 and 18 are essential ground connections.