Z86C9325ASG - 8-Bit 25 MHz ROMless MCU | Zilog
部品番号: Z86C9325ASG ✓ 生産中Z86C9325ASG 概要
A microcontroller is a programmable system-on-chip that integrates a processor core, memory interface, timers, serial interfaces, and digital I/O into one device. The Z8 family belongs to the broader embedded-controller hierarchy: ROMless microcontrollers are programmed externally, allowing the same silicon to be used with different program memories or configurations. This makes them useful when a product requires field customization, external nonvolatile program storage, or a memory arrangement not addressed by the MCU's own program memory.
The Z86C93 family includes a hardwired 16-bit by 16-bit multiplier, a 32-bit by 16-bit divider, and three 16-bit counter timers. A capture register and fast decrement mode improve measurement and event-handling flexibility. These arithmetic and timing resources are valuable for motor control, industrial counting, signal timing, and compact embedded controllers that must perform calculations without relying on a more complex processor architecture.
The 25 MHz operating rate provides more execution headroom than slower members of the Z86C93 family while retaining an 8-bit instruction-oriented architecture. Program storage is external because the device is ROMless, so designers must select the appropriate memory interface, programmer, and code-development workflow. Firmware determines the final peripheral configuration and application behavior, meaning successful implementation depends on matching the external program-memory device and bus timing to the controller requirements.
Typical applications include industrial timers, counter modules, keypad and display controllers, appliance controls, small motor-control boards, and embedded OEM products requiring compact 8-bit control. The 48-pin LQFP package exposes more I/O than smaller packages and supports prototype and production assembly using standard surface-mount processes. It is particularly appropriate where three timers and dedicated arithmetic hardware simplify control tasks that would otherwise require additional discrete logic.
For layout and firmware work, begin with the manufacturer pin-description table and the Z86C93 hardware design guidance. Confirm external program-memory addressing, oscillator connections, reset behavior, and the functions assigned to every I/O pin before routing the board. Pay particular attention to trace length, grounding, and decoupling around high-frequency clock and program-bus signals because those routes determine whether the intended 25 MHz operation is reliable in the final assembly.
This product overview combines the verified Z86C93 device characteristics with practical guidance on package use, firmware resources, and board integration. It also identifies the limits of direct substitution: an equivalent-looking 8-bit microcontroller is not a true drop-in replacement unless its package pins, electrical ratings, timer resources, instruction behavior, and external memory interface are all confirmed compatible.
ドロップイン代替品: Z86C9325ASG — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストZ86C9325ASG 最大定格＆電気的特性
| Microcontroller Type | 8-bit ROMless Z8 microcontroller |
| 最大クロック周波数 | 25 MHz |
| 動作電源電圧 | 3 V to 5.5 V |
| CPU Architecture | Z8 8-bit |
| Process Technology | CMOS |
| Program Memory | External ROMless program memory |
| Multiplier | Hardwired 16-bit x 16-bit multiplier |
| Divider | Hardwired 32-bit/16-bit divider |
| Counter Timers | 3 x 16-bit counter timers |
| Timer Capture Register | 1 capture register |
| Timer Fast Decrement Mode | Supported |
| Package Type | 48-pin LQFP |
| Package Body Size | 7 x 7 mm |
| 実装タイプ | Surface mount |
| RoHS Compliance | Compliant |
Z86C9325ASG 7 x 7 mm ピン配置ガイド
Z86C9325ASG (7 x 7 mm パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: Z86C9325ASG.
詳細は データシート をご参照ください。
主な用途
Z86C9325ASG の用途: 6 件s: Industrial Counter and Event-Meter Modules, Appliance and Equipment Control Panels, Compact Motor and Stepper-Control Logic, Keypad, Display, and Menu Controllers, Programmable Logic and Sequence Control, Embedded OEM Control Products.
Industrial Counter and Event-Meter Modules
The Z86C9325ASG fits compact counter modules that accumulate events, measure intervals, and trigger downstream actions. Its 25 MHz operating rate provides execution headroom, while the three 16-bit counter timers and capture register support multiple timing channels without requiring a separate timer IC. The hardwired 16-bit by 16-bit multiplier and 32-bit by 16-bit divider can simplify scaling and rate calculations. Firmware should include debounce or filtering for mechanical contacts and define rollover behavior for long-duration counts.
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Appliance and Equipment Control Panels
The Z86C9325ASG is appropriate for appliance and equipment panels that combine button inputs, indicators, timers, and sequenced actuator control. Its 48-pin LQFP provides a useful balance between I/O access and board area, while the ROMless architecture allows product firmware to be stored externally. The 3 V to 5.5 V operating range supports common control-system rails. Designers should use the manufacturer pin table to allocate inputs and outputs, protect externally accessible signals, and coordinate actuator drive circuitry outside the microcontroller.
おすすめ
Compact Motor and Stepper-Control Logic
The Z86C9325ASG can serve as the timing and sequencing core in compact motor or stepper-control modules. Three 16-bit timers provide separate resources for motion timing, step generation, or periodic control, while the hardwired multiplier and divider assist with rate and position-related arithmetic. Its 25 MHz clock leaves useful computation headroom for motion-state logic. The controller should not directly drive motor windings; use suitable transistor and protection circuits, and validate timing behavior across the required speed and load range.
おすすめ
Keypad, Display, and Menu Controllers
The Z86C9325ASG suits keypad and display-control modules that require deterministic scanning, debouncing, and menu-state handling. Its 48-pin LQFP offers more I/O capacity than a small controller package, allowing display-control signals, key inputs, and status outputs to share a board when the system is not too large. The 25 MHz rate supports more responsive scan loops than slower family members. Allocate pins from the manufacturer table and account for display-bus timing, driver current, and connector protection.
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Programmable Logic and Sequence Control
The Z86C9325ASG is useful in programmable logic and sequence-control products where timing patterns must be changed through firmware rather than fixed hardware. The ROMless configuration supports external program storage and product-specific logic, while three timers and dedicated arithmetic blocks reduce the number of external components. The 3 V to 5.5 V range suits common embedded control rails. Confirm the external memory device, programming workflow, reset behavior, and maximum operating frequency in the manufacturer's Z86C93 documentation before finalizing the architecture.
おすすめ
Embedded OEM Control Products
The Z86C9325ASG can form the core of a small OEM controller where external program storage, multiple timers, and a moderately sized I/O package are advantageous. The ROMless architecture allows a common controller platform to be combined with different program memories or product configurations, while the 25 MHz Z8 core supports responsive supervisory logic. Designers should define the external memory map early, reserve programming and debug access, and validate startup timing. Firmware also needs a recovery strategy for field updates and brownout conditions.
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おすすめ製品の概要
エンジニアリング参考データ: Z86C9325ASG — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 |
|---|---|
| Brand | Zilog |
| Package | 48-pin LQFP, 7 x 7 mm |
| Microcontroller Type | 8-bit ROMless Z8 microcontroller |
| Maximum Clock Frequency | 25 MHz |
| Operating Supply Voltage | 3 V to 5.5 V |
| Multiplier | Hardwired 16-bit x 16-bit |
| Divider | Hardwired 32-bit/16-bit |
| Counter Timers | 3 x 16-bit |
| Program Memory | External ROMless program memory |
| Technology | CMOS |
設計ノート
Assign every LQFP position directly from the Z86C93 manufacturer pin-description table before schematic capture. Pay particular attention to supply, ground, reset, oscillator, programming, and external program-memory signals because incorrect assumptions can prevent firmware access or cause unstable operation. Use a footprint whose pad dimensions and exposed-pad treatment match the selected ordering code, and verify the pin-1 orientation against both the footprint library and physical assembly drawing.
Keep the oscillator path and external program-bus routing short, with continuous ground references beneath the relevant signals. Place decoupling capacitors close to the controller's supply pins and keep high-current switching loops away from clock and memory traces. Review propagation and crosstalk at the intended 25 MHz operating rate, particularly when long memory traces connect to the external ROMless program-memory device.
Do not substitute a Z86C93 family member solely because it has a similar 48-pin package. Clock rate, pin functions, timer resources, electrical limits, and external program-memory behavior must agree with the Z86C9325ASG design. Preserve the programmed firmware and timing assumptions during any proposed replacement. A part that boots and operates at low frequency may still fail a production design that relies on the 25 MHz timing margin of the original device.
Design the 3 V to 5.5 V supply path so it remains within the controller's operating range during startup, reset, and maximum processing load. Place local bypass capacitance at the supply pins using the capacitance and voltage ratings specified by the manufacturer documentation. If the external program memory or oscillator shares the supply rail, account for its startup current and ensure that brownout behavior cannot place the controller into an unsafe control state.
Treat the three timers, capture register, fast decrement mode, multiplier, and divider as dedicated hardware resources, but allocate them explicitly in firmware to avoid priority conflicts. Confirm rollover and interrupt behavior for long measurement intervals, and define reset-state outputs so external actuators remain safe during startup and brownout. Also verify programming access is preserved in the final pin allocation if field updates are required.
コンプライアンス情報
The LCSC product listing identifies the Z86C9325ASG as RoHS compliant. No additional qualification, halogen-free, conflict-minerals, or REACH statement is established by the listed manufacturer information.