IS25WP064D-JKLE

IS25WP064D-JKLE is a 64-Mbit serial flash memory from ISSI (IS25WP064D family) used for embedded firmware and data storage. It provides nonvolatile storage with a SPI-compatible interface and is designed for small-footprint microcontroller systems.
Key points:
- Capacity and organization: 64 Mbit (8 MB), typically organized in 256-byte pages; uses 3-byte addressing for this density.
- Interface: SPI-compatible serial flash; supports standard read and fast read; some variants offer higher-speed/dual- or quad-SPI modes (check datasheet for this package).
- EMS features: Page program (256 bytes), sector erase (4 KB), block erase (64 KB), and full-chip erase.
- Power and safety: low-power modes including standby and deep power-down; hardware write protection via WP#; status register access.
- Electrical and package: usually 2.7–3.6 V operation; industrial temperature variant for JKLE; available in an 8-pin package.
Applications: firmware storage, boot code, configuration data, and look-up tables in microcontroller-based designs.

Equivalent 64 Mbit serial SPI flash devices from other vendors include:
- Winbond: W25Q64FV, W25Q64JV
- Macronix: MX25L6406E, MX25L6436F
- Gigadevice: GD25Q64C, GD25Q64B
- Spansion/Cypress: S25FL064P, S25FL064K
- Puya: P25Q64H
- Fudan Microelectronics: FM25Q64A
- EON: EN25Q64
(Part numbers may vary by voltage/temperature/package.)

Key features of IS25WP064D-JKLE (ISSI 64M-bit serial NOR flash):
- 64 Mbit (8 MB) serial flash memory
- SPI-compatible interface with standard SPI and Dual/Quad I/O (DQ) modes
- High-speed reads and support for fast/continuous read modes
- Page program size: 256 bytes
- Erase granularity: 4 KB sectors, 32 KB and 64 KB blocks, plus Chip Erase
- Endurance: ~100k program/erase cycles; Data retention: ~20 years
- Low power operation with deep power-down mode
- Operating voltage: 2.7–3.6 V
- Industrial temperature range: -40°C to +85°C
- 8-pin package with WP, HOLD, CS, SCK, SI/SO, and VCC/GND pins
- Lead-free (JKLE variant)
Note: exact mode availability (e.g., Dual/Quad I/O, QPI) and timing can depend on the specific device revision and supply voltage.

- Pin count: 8 pins.
- Function: Serial SPI NOR flash memory (64 Mbit) for non-volatile storage, with standard SPI interface (CS, SCK, SI/MOSI, SO/MISO) plus WP# and HOLD# control pins, plus VCC and GND.

- Manufacturer: Integrated Silicon Solution, Inc. (ISSI).
- What kind of company: A global semiconductor company that designs and markets memory products (DRAM and flash memory) and supplies memory ICs to the electronics industry.

IS25WP064D-JKLE is a 64-Mbit serial NOR flash (Quad SPI) used for non-volatile storage in many devices. Typical application areas:
- Boot ROM and firmware storage for microcontrollers/SoCs
- Firmware updates and code storage in consumer electronics and IoT
- Industrial automation and automotive ECUs, instrumentation, control modules
- Networking equipment (routers, switches, modems) for firmware and config data
- Data logging, calibration data, asset tracking in field/industrial devices
- Smart meters, building automation, wearables requiring reliable persistent storage

8-pin SOP (SOIC) package, RoHS lead-free (lead-free) variant.