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Macronix MX66L1G45G CMOS MXSMIO® Flash Memory

Macronix MX66L1G45G CMOS MXSMIO® (Serial Multi-I/O) Flash Memory are 1‑Gbit Serial NOR Flash memory devices featuring MXSMIO (Serial Multi‑I/O) technology. Internally, the Macronix MX66L1G45G is organized as 134,217,728 × 8-bits in single-I/O mode, while dual‑ and quad‑I/O modes reconfigure the memory to 536,870,912 × 2-bits and 268,435,456 × 4-bits, respectively. In single-I/O mode, the device operates over a simple three‑wire serial interface consisting of SCLK, SI, and SO, with CS# used to enable access.

In dual‑ and quad‑I/O read modes, the interface pins are reassigned to support multi‑bit address, dummy, and data transfers. Dual‑I/O mode uses SIO0 and SIO1, while quad‑I/O mode employs SIO0–SIO3, mapped from the SI, SO, WP#, and NC pins. The MXSMIO architecture enables fast sequential read operations across the entire memory array, improving overall read performance.

The Macronix MX66L1G45G supports flexible program and erase operations, including byte, word, and 256‑byte page programming. Erase sizes of 4‑KB sectors, 32‑KB or 64‑KB blocks, or the full chip are also supported. An integrated status register allows monitoring of program and erase completion via the WIP bit, while advanced security features provide additional protection. When CS# is high, the device enters standby mode, and Macronix’s proprietary memory cell technology ensures reliable data retention through up to 100,000 program/erase cycles.

Features

  • Software
    • 1-byte command code input data format
    • Advanced security
      • Block lock protection - BP0-BP3 and T/B status bits define the size of the area to be protected against program and erase instructions
      • Advanced sector protection function (solid and password protect)
    • Additional 4K-bit secured OTP
      • Unique identifier
      • Factory locked identifiable and customer lockable
    • Command reset
    • Program/erase suspend and resume operation
    • Electronic identification
      • JEDEC 1-byte manufacturer ID and 2-byte device ID
      • RES command for 1-byte Device ID
      • REMS command for 1-byte manufacturer ID and 1-byte device ID
    • Supports Serial Flash Discoverable Parameters (SFDP) mode
  • Supports Serial Peripheral Interface (SPI) - Mode 0 and Mode 3
  • Single power supply operation - 2.7V to 3.6V range for read, erase, and program operations
  • Single I/O, dual I/O, and quad I/O protocol support
  • Latch-up protected to 100mA from -1V to VCC +1V
  • Low VCC write inhibit from 2.3V to 2.5V
  • Fast read for SPI mode
    • Supports clock frequencies up to 166MHz
    • Supports Fast Read, 2READ, DREAD, 4READ, and QREAD instructions
    • Supports DTR (Double Transfer Rate) mode
    • Configurable dummy cycle number for fast read operation
  • Supports performance-enhanced mode - XIP (execute-in-place)
  • Quad Peripheral Interface (QPI) available
  • Equal 4K-byte sectors, or equal blocks with 32K-bytes or 64K-bytes each, any block can be erased individually
  • Programming
    • 256-byte page buffer
    • Quad input/output page program (4PP) to enhance program performance
  • 100,000 typical erase/program cycles
  • 20-year data retention
  • Hardware
    • SCLK input (serial clock input)
    • SI/SIO0 - serial data input or serial data input/output for 2x I/O read mode and 4x I/O read mode
    • SO/SIO1 - serial data output or serial data input/output for 2x I/O read mode and 4x I/O read mode
    • WP#/SIO2 - hardware write protection or serial data input/output for 4x I/O read mode
    • NC/SIO3 - no connection or serial data input/output for 4x I/O read mode
    • RESET# - hardware reset pin
  • Package options
    • 16-pin SOP (300mil)
    • 24-ball BGA (5mm x 5mm ball array)
  • Halogen-free and RoHS-compliant

Applications

  • Embedded system code storage
  • Consumer electronics
  • Networking and communication equipment
  • Industrial and embedded control systems
  • Internet of Things (IoT) devices
  • Automotive and infotainment subsystems (non‑safety critical)

Specifications

  • Maximum capacitance
    • 35pF input
    • 32pF output
  • ±4µA maximum input load current
  • ±4µA maximum output leakage current
  • 40µA maximum deep power-down current
  • Maximum clock frequencies
    • 166MHz for all commands except read operation
    • 66MHz for read instructions
  • 8ns maximum output disable time
  • 1ns minimum output hold time
  • Minimum write-protect
    • 20ns setup time
    • 100ns hold time
  • -40°C to +85°C operating temperature range

Block Diagram

Block Diagram - Macronix MX66L1G45G CMOS MXSMIO® Flash Memory
發佈日期: 2026-03-24 | 更新日期: 2026-03-31