Z86E4312VSG - 8-Bit 12MHz 4KB OTP Z8 MCU, 44-LCC | Zilog
部品番号: Z86E4312VSG ✓ 生産中Z86E4312VSG 概要
A microcontroller is a single-chip computer that integrates a CPU core, program memory, data memory, timers, serial ports and I/O pins on one die. The Z8 family from Zilog targets embedded control applications where a small, low-cost device must sequence relays, read sensors, drive displays and manage simple communication links. Within the broader semiconductor hierarchy, this device belongs to the microcontroller -> 8-bit MCU -> embedded controller class, and to the power-and-control tier of the device tree rather than to analog or power-semiconductor segments.
Key features of this device include 32 configurable I/O lines, an 8-bit internal data bus, and a 4 KB user program area implemented as OTP, meaning the application code is written once and cannot be erased or re-programmed. Supply voltage operation spans 3.5 V to 5.5 V, so the part fits both 5 V legacy systems and 3.3 V-only designs at the lower end of the range. The device also includes an on-chip oscillator, timers and serial communication resources that reduce the external component count of a typical controller board.
Technically, the Z86E4312 sits in the Zilog Z86E4x12 sub-family, which pairs a 12 MHz core with a 4 KB OTP memory map. Because program memory is mask-programmable OTP rather than flash, designers must finalize firmware before production and cannot apply field updates through a bootloader, which is the central architectural trade-off of this family. Industrial temperature grading of 0 degrees C to +70 degrees C is specified for the VSG ordering code, and the part is delivered in a surface-mount 44-LCC package that is directly soldered to the board rather than socketed.
Typical uses include building-block controller boards, motor and relay sequencers, security keypad scanners, small instrumentation front panels, temperature-control loops in appliances, and LED signage drivers. Because the device provides 32 I/O pins, one Z86E4312 can replace several discrete logic ICs and a separate driver array in a compact enclosure.
When laying out the board, route the 44-LCC pads on a compatible PLCC footprint, provide decoupling close to the supply pins, and keep the OTP programming interface accessible until the code is finalized. Also note that OTP parts are ordered against a fixed firmware image, so schedule programming and mask ordering early in the development cycle.
This page consolidates the device characteristics, package and mounting details, drop-in replacement options within the same 44-LCC footprint, and practical design guidance so that a design team can decide quickly whether the Z86E4312VSG fits the control task and how to qualify an alternative if sourcing needs change.
ドロップイン代替品: Z86E4312VSG — 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。
Z86E4312VSC
✅ ドロップイン📋 参考代替品（カタログ未掲載）
Z86E4312PSC
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
Z86E4312VEC
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
Z86E4312VEG
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
Z86E4312ESC
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
Z86E4312VSG 最大定格＆電気的特性
| Manufacturer | Zilog |
| Series | Z8 Z8 |
| Device Type | 8-Bit Microcontroller (MCU) |
| Architecture | 8-bit |
| データバス幅 | 8 bit |
| 最大クロック周波数 | 12 MHz |
| Program Memory Size | 4 KB (4K x 8) OTP |
| Program Memory Type | One-Time Programmable (OTP) |
| Data ROM Size | 4 kB |
| Number of I/O | 32 I/O |
| Supply Voltage - Min | 3.5 V |
| Supply Voltage - Max | 5.5 V |
| ADC Resolution | No ADC |
| Operating Temperature - Min | 0 degrees C |
| Operating Temperature - Max | +70 degrees C |
| パッケージ / ケース | 44-LCC (J-Lead), PLCC-44 |
| 実装スタイル | SMD/SMT |
| ピン数 | 44 pins |
Z86E4312VSG 44-lcc (j-lead), plcc-44 ピン配置ガイド
Z86E4312VSG (44-lcc (j-lead), plcc-44 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: Z86E4312VSG.
詳細は データシート をご参照ください。
主な用途
Z86E4312VSG の用途: 6 件s: Appliance and HVAC Sequencer Controller, Security Keypad and Access Panel, Small Instrumentation Front Panel, LED Signage and Lighting Driver Boards, Motor Stepper and Relay Sequencing, Battery-Powered Sensor and Monitoring Node.
Appliance and HVAC Sequencer Controller
The Z86E4312VSG fits compact appliance control boards where a fixed sequence of relays, dampers and heaters must be executed reliably. Its 32 I/O lines allow one device to drive relay banks, sense limit switches and read a keypad matrix without external logic, while the 12 MHz core provides ample timing resolution for stepper-style actuator sequencing. The 4 KB OTP program area is well matched to a fixed state machine that does not need field updates. One consideration is the 3.5 V minimum supply, which means a 5 V rail or a regulated 3.3 V supply is needed rather than a raw single cell, and the 0 to +70 degrees C grade suits indoor appliance environments.
おすすめ
Security Keypad and Access Panel
Access-control keypads and intercom panels are a natural home for the Z86E4312VSG because the application logic is compact and essentially unchanging. The 32 available I/O lines support a 4x4 or larger matrix keypad, indicator LEDs, a buzzer output and a request-to-exit input, while the on-chip timers and serial resources drive a reader peripheral or an off-board relay board. Using a single 8-bit MCU instead of a discrete logic array lowers board area and part count. Because the program memory is OTP, the device is a good fit for a build where the keypad layout and credential logic are fixed at manufacture and no field update or self-test code patch is anticipated.
おすすめ
Small Instrumentation Front Panel
Laboratory and industrial instrument front panels combine a display, a keypad and a few analogue front-end nodes behind a single low-cost controller. The Z86E4312VSG handles display multiplexing, button decoding and status indication from its 32 I/O lines and 12 MHz core, and its lack of an integrated ADC means a separate converter such as the MCP3424 can supply measurements while the MCU supervises calibration and logging. The 4 KB OTP map suits fixed UI firmware. Note that the 44-LCC footprint requires a plated land pattern that differs from common 44-pin QFN or QFP packages, so footprint libraries and hand-solder stencils must be checked against the J-lead drawing.
おすすめ
LED Signage and Lighting Driver Boards
LED display modules and decorative lighting controllers benefit from a dedicated 8-bit MCU that can run a refresh engine and drive constant-current driver stages. The Z86E4312VSG provides 32 I/O for multiplexed row and column drive plus status outputs, and the 12 MHz clock supports fast refresh timing without external logic. Because the firmware pattern and dimming tables are typically frozen at build time, OTP memory avoids the cost and complexity of flash while providing permanent code retention. Thermal margin should be checked carefully: the 0 to +70 degrees C ambient grade leaves little headroom in sealed enclosures that dissipate driver-stage heat, so keep the MCU away from the power stage and avoid enclosing it without ventilation.
おすすめ
Motor Stepper and Relay Sequencing
Small stepper-motor indexers, valve sequencers and latching relay matrices need precise timing and many outputs but very little code, which is exactly the profile of the Z86E4312VSG. The 12 MHz core generates the step-rate and dwell timing, and the 32 I/O lines drive stepper coils through a driver transistor array or directly gate relay drivers. The 4 KB OTP area is generous for a lookup-table-based motion profile. Two design cautions apply: because the device has no ADC, closed-loop current sensing needs an external amplifier and comparator path, and the 44-LCC package should be placed away from the high-current switching nodes to limit ground-bounce coupling into the 3.5 V minimum rail.
おすすめ
Battery-Powered Sensor and Monitoring Node
Distributed monitoring nodes in building, utility or asset-tracking networks can use the Z86E4312VSG as the low-power supervisory controller that wakes, reads a sensor, checks a threshold and reports over a slow serial link. The 8-bit core and small I/O count are sufficient for a duty-cycled supervisory role, and the 32 I/O lines leave room for discrete threshold inputs and a status LED. The main constraints are supply and memory: minimum operating voltage is 3.5 V, so a regulated 3.3 V or 5 V rail is needed, and the 4 KB OTP map means wake routines and thresholds must be designed tightly. For nodes needing more memory or true flash updates, consider a low-power flash MCU such as the STM8L152K6U6 instead.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: Z86E4312VSG — 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 | Z86E4312VSC | Z86E4312PSC | Z86E4312VEC | Z86E4312VEG | Z86E4312ESC |
|---|---|---|---|---|---|---|
| Brand | Zilog | Zilog | Zilog | Zilog | Zilog | Zilog |
| Package | 44-LCC (J-Lead), PLCC-44 | 44-LCC (J-Lead), PLCC-44 - same | 44-LCC (J-Lead), PLCC-44 - same | 44-LCC (J-Lead), PLCC-44 - same | 44-LCC (J-Lead), PLCC-44 - same | 44-LCC (J-Lead), PLCC-44 - same |
| Maximum Clock Frequency | 12 MHz | 12 MHz | 12 MHz | 12 MHz | 12 MHz | 12 MHz |
| Program Memory | 4 KB (4K x 8) OTP | 4 KB (4K x 8) OTP | 4 KB (4K x 8) OTP | 4 KB (4K x 8) OTP | 4 KB (4K x 8) OTP | 4 KB (4K x 8) OTP |
| Data ROM | 4 kB | 4 kB | 4 kB | 4 kB | 4 kB | 4 kB |
| Number of I/O | 32 I/O | 32 I/O | 32 I/O | 32 I/O | 32 I/O | 32 I/O |
| Supply Voltage Range | 3.5 V to 5.5 V | 3.5 V to 5.5 V | 3.5 V to 5.5 V | 3.5 V to 5.5 V | 3.5 V to 5.5 V | 3.5 V to 5.5 V |
| ADC | No ADC | No ADC | No ADC | No ADC | No ADC | No ADC |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT | SMD/SMT | SMD/SMT | SMD/SMT |
主な差別化要因
- Identical core, memory and timing across the entire drop-in set （vs Z86E4312VSC)
- Full 32 I/O in a single 44-lead package reduces the external logic count （vs Z86E4312PSC)
- Commercial 0 to +70 degrees C grade with 3.5 V to 5.5 V supply （vs Z86E4312VEC)
- Surface-mount J-lead assembly instead of through-hole insertion （vs Z86E4312PSG)
設計ノート
The 44-LCC (J-Lead) footprint is not interchangeable with a 44-pin QFP or QFN land pattern, and the leads wrap under the package body. Design the board pad array from the manufacturer package drawing, keep the courtyard clear for the J-lead curl radius, and confirm the chamfer orientation against the pin-1 marker before reflow. Because the device is a surface-mount part that can also be socketed by some assemblers, verify whether your assembly flow uses a PLCC-44 socket or direct solder, since the solder profile and inspection method differ.
Plan the supply network around the 3.5 V to 5.5 V operating window. Place a 100 nF ceramic decoupling capacitor as close as practical to the supply pins and back it up with a bulk electrolytic or ceramic of a few microfarads to absorb relay and load transients. If the board also hosts switching regulators, route the supply with a dedicated ground path rather than sharing return current with high-di/dt outputs, otherwise the 3.5 V minimum could be violated momentarily and the core can brown out during a relay event.
The single largest design trap with this device is the OTP program memory: firmware is written once, cannot be erased, and cannot be updated in the field. Freeze the code, build a full regression test on the first programmed samples, and make sure the mask or programming image you release is the final one before ordering production quantities. Also remember there is no on-chip ADC, so analogue inputs need external conversion, and the 0 to +70 degrees C grade rules the part out of any enclosure that can exceed commercial ambient temperatures.
With 32 I/O lines exposed on a 44-lead package, pin multiplexing becomes a layout driver, not just an electrical one. Group related signals so that matrix keypad rows, display segments and relay outputs do not interleave across the package, which keeps the routing short and avoids stubbing long tracks between widely separated pins. Leave programming and test access to the OTP interface accessible until the code is signed off, and keep any crystal or timing-critical oscillator parts away from the relay-driver and stepper coil traces.
コンプライアンス情報
No RoHS, REACH, halogen-free or AEC-Q100 status is stated for the Z86E4312VSG in the available manufacturer and distributor documentation. The part is a commercial-grade (0 to +70 degrees C) 8-bit MCU and is not presented as an automotive-qualified device. Confirm lead-finish and material declarations with the manufacturer before release.