M58BW32FB5ZA3T - 32Mbit Burst NOR Flash 55ns | Micron
料号： M58BW32FB5ZA3T ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.46 | $6.46 |
| 10 | $6.1 | $61.00 |
| 100 | $5.65 | $565.00 |
| 500 | $5.25 | $2,625.00 |
| 1,000 | $4.88 | $4,880.00 |
M58BW32FB5ZA3T 概述
NOR flash is a type of non-volatile memory in which individual words can be randomly accessed, unlike NAND flash, which reads in pages. Within the memory hierarchy, flash memory sits below SRAM and DRAM as code-storage media; NOR flash in particular is used for execute-in-place (XIP) boot code because the processor can address and read any byte directly. Burst-mode NOR flash adds a synchronous burst interface, so after an initial asynchronous address cycle, subsequent words stream out on a pipelined bus clock, dramatically improving effective bandwidth over standard asynchronous NOR devices.
Key features of the M58BW32FB5ZA3T include its 32Mbit organization in a x32 parallel bus, the 55 ns random-access time, single 3.3V operation, and the burst (pipelined-synchronous) read mode. The boot-block architecture places a small lockable block at one end of the array for secure boot code, while the remaining blocks are larger for firmware and data. Block locking and protection features guard critical code regions against accidental erase or program operations.
Technically, this device belongs to the M58BW32F family, originally developed by STMicroelectronics and later transferred to Micron Technology, whose datasheet documents the 81-page specification. The x32 bus width reduces address multiplexing complexity for 32-bit processors, and the burst interface pairs naturally with embedded CPUs that support synchronous burst flash reads.
Typical applications include 32-bit embedded processor boot ROM, telecommunications and networking equipment code storage, industrial control firmware banks, and legacy defense or avionics systems that require long-term NOR flash availability.
A key design consideration is signal integrity on the burst clock: keep the clock and address lines length-matched and terminate per the datasheet timing budgets so that 55 ns access timing is met across temperature.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not consolidated in the manufacturer datasheet, adding supply-chain and engineering value beyond the raw specification.
直接替换替代料： M58BW32FB5ZA3T ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： M58BW32FB5ZA3T （相同外形与封装尺寸） ——差异在于 Memory Type, Organization, Supply Voltage, Access Time, Interface.
快速对比工具——选择替代料号进行并排对比：
M58BW32FB5ZA3F
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
M58BW32FB5T3F
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$6.2 / 个
查看数据手册 →M58BW16FB4ZA3F
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.48 / 个
查看数据手册 →M29W128GL70ZF3F
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
M58BW32FB5ZA3T-TR
✅ 直接替换📋 参考替代料（不在目录中）
M58BW32FB5ZA3T 最大额定值与电气特性
| 存储器类型 | FLASH - NOR Memory IC |
| 存储容量 | 32 Mbit |
| 存储组织 | x32 (Boot Block, Burst) |
| 接口 | Parallel |
| Access Time | 55 ns |
| 电源电压 | 3.3 V (single supply) |
| Burst Mode | Yes (synchronous burst read) |
| Block Architecture | Boot Block |
| 封装 | 80-LBGA (10 x 12 mm) |
| 安装类型 | Surface Mount |
| Packaging | Tape & Reel (TR suffix) |
M58BW32FB5ZA3T 80-lbga (10 x 12 mm) 引脚配置指南
M58BW32FB5ZA3T（80-lbga (10 x 12 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： M58BW32FB5ZA3T.
请参阅 数据手册 以查看完整引脚配置。
典型应用
M58BW32FB5ZA3T 适用于 6 应用s: 32-bit Embedded Processor Boot Memory, Telecommunications and Networking Equipment, Industrial Control and Automation, Defense and Avionics Legacy Systems, Test and Measurement Instrumentation, Firmware Banks and Secure Boot Storage.
32-bit Embedded Processor Boot Memory
The M58BW32FB5ZA3T fits boot-ROM duty for 32-bit embedded processors because its x32 parallel bus matches native 32-bit CPU data paths, eliminating bus-width adaptation logic, and its 55 ns access time supports direct execute-in-place (XIP) fetches. The boot-block architecture lets designers lock one small block for immutable boot code while larger blocks hold updatable application firmware. Used between the CPU external-bus controller and system bus with the synchronous burst clock enabled, it streams sequential words after an initial asynchronous address, multiplying effective read bandwidth versus standard asynchronous NOR. The trade-off is a denser 80-ball LBGA routing task and disciplined timing closure versus simpler serial flash boot solutions.
推荐
Telecommunications and Networking Equipment
Line cards, routers, and switches need fast, non-volatile code storage that survives power loss and supports in-field firmware updates. The M58BW32FB5ZA3T's 32Mbit x32 organization provides 4 MB of code capacity on a wide parallel bus, and its burst read mode accelerates boot and exception-handling fetches where 55 ns random access keeps CPU stall cycles low. Block-level locking protects the golden firmware image while field-upgradable blocks are reprogrammed via the documented command-set state machine. Deployed on the control-plane processor's local bus with 3.3V I/O matching typical backplane logic, it avoids the page-granularity erase overhead of NAND alternatives, at the cost of larger erase blocks than small-sector serial flash.
推荐
Industrial Control and Automation
PLCs, motor controllers, and factory automation nodes require firmware storage with guaranteed integrity across years of continuous operation and frequent power cycling. The M58BW32FB5ZA3T's boot-block protection secures the startup image against stray writes during brown-out events, and the single 3.3V supply simplifies rail design in 24V-derived industrial controllers. Its 55 ns burst access keeps real-time loop start-up deterministic, and the parallel x32 interface pairs cleanly with the industrial 32-bit CPUs common in legacy automation platforms. Engineers should budget program/erase cycles per the datasheet endurance specification and log wear for frequently-updated parameter blocks.
推荐
Defense and Avionics Legacy Systems
Long-life military and aerospace platforms still standardized on STMicroelectronics-designed M58BW-series burst NOR benefit from continued Micron Technology supply of the M58BW32FB5ZA3T. Its deterministic 55 ns asynchronous access avoids the controller complexity of NAND, and the burst interface matches the synchronous external buses of heritage 32-bit processors used in avionics mission computers. The 80-LBGA 10 x 12 mm ceramic-compatible board footprint supports the dense, vibration-tolerant assemblies typical of these systems. Because redesign cycles in this domain span decades, pin-compatible family variants such as the ZA3F suffix extend sourcing options without layout changes.
推荐
Test and Measurement Instrumentation
Oscilloscopes, logic analyzers, and signal generators boot large firmware images and benefit from the M58BW32FB5ZA3T's combination of 32Mbit density and burst-mode read bandwidth. The x32 parallel interface delivers one 32-bit word per burst cycle after the initial 55 ns access, shortening cold-start times compared to serial NOR boot solutions, which matter in bench instruments where users expect immediate readiness. Boot-block locking lets the instrument vendor ship a protected recovery image alongside user-updatable application firmware. Designers should place the LBGA close to the host processor and manage erase/program current pulses with adequate bulk decoupling to avoid rail droop during updates.
推荐
Firmware Banks and Secure Boot Storage
Any design implementing A/B firmware banks or secure-boot root-of-trust storage can exploit the M58BW32FB5ZA3T's 32Mbit capacity to hold two complete images plus a locked boot block. The 55 ns burst read supports cryptographic verification at power-up without lengthy delays, and the block-lock state machine enforces hardware-level write protection on the root image per the datasheet protection scheme. Running from the same 3.3V rail as the host SoC simplifies sequencing, though designers must follow the datasheet power-up lock timing so protection engages before firmware execution begins. Estimate wear by tracking program/erase counts per block against the datasheet endurance rating.
推荐
推荐产品汇总
工程参考数据： M58BW32FB5ZA3T ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | M58BW32FB5ZA3F | M58BW32FB5T3F | M58BW16FB4ZA3F |
|---|---|---|---|---|
| Package | 80-LBGA (10 x 12 mm) | 80-LBGA (10 x 12 mm) - same | 80-LBGA (10 x 12 mm) - same | 80-LBGA (10 x 12 mm) - same |
| Brand | Micron Technology | Micron Technology | Micron Technology | Micron Technology |
| Memory Size | 32 Mbit | 32 Mbit | 32 Mbit | 16 Mbit |
| Organization | x32, Boot Block, Burst | x32, Boot Block, Burst | x32, Boot Block, Burst | x32, Boot Block, Burst |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Interface | Parallel | Parallel | Parallel | Parallel |
关键差异点
- Double the density on the same footprint （对比 M58BW16FB4ZA3F)
- Fastest suffix in the M58BW32 family （对比 M58BW32FB5T3F)
- Synchronous burst read bandwidth （对比 M29W128GL70ZF3F)
设计说明
The synchronous burst clock is the critical net on this device. Keep it short, route it away from the x32 data bus, and length-match address/control lines so the initial 55 ns access window and subsequent burst-cycle timing hold across the full temperature range. Terminate the clock per the datasheet output timing budget; ringing on the burst clock can cause extra words to be clocked out and corrupt reads. This estimate should be validated against the manufacturer datasheet AC timing tables.
Estimated: decouple each VDD ball pair at the 80-LBGA with 0.1 uF ceramic capacitors placed within 2 mm of the balls, plus bulk capacitance near the package, because erase and program operations draw current pulses on the 3.3V rail. If the same rail feeds the host processor, budget for simultaneous program current to avoid rail droop during firmware updates. Verify against the datasheet ICC program/erase figures before finalizing the power tree.
The boot block must be locked per the datasheet protection state machine before firmware execution begins; ensure the power-up sequence engages block locking before releasing the host CPU from reset, or a stray write during brown-out can corrupt the boot image. Also verify the suffix code ordering table - suffix letters (FB5, T3F, ZA3T/ZA3F) encode temperature and speed attributes, so interchanging suffixes without datasheet verification risks shipping parts outside the qualified temperature range.
合规信息
Compliance status was not stated in the provided web data; verify RoHS/REACH status on the Micron product page before ordering.
