S3F8S7BXZZ-TW8B - 8-bit MCU, 64KB Flash, 80-TQFP | Zilog
部品番号: S3F8S7BXZZ-TW8B ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $6.5 | $6.50 |
| 10 | $5.85 | $58.50 |
| 100 | $5.2 | $520.00 |
| 500 | $4.65 | $2,325.00 |
| 1,000 | $4.1 | $4,100.00 |
S3F8S7BXZZ-TW8B 概要
Key features of the S3F8S7B family include a Z8-compatible CPU that delivers a fast and efficient register-oriented architecture, 64 KB of Flash memory for program storage, RAM for data operations, and a sophisticated interrupt controller that supports fast context switching. The integrated peripherals typically include multiple timers/counters, a UART, an A/D converter, GPIO, and PWM channels, allowing the device to consolidate many discrete analog and digital functions onto a single chip and reduce overall BOM cost.
Typical applications for this MCU include home appliance control (washing machines, microwave ovens, induction cookers), industrial motor control, HVAC control panels, security alarm panels, remote controllers, and consumer electronics that require a small, low-cost 8-bit controller with ample Flash for feature-rich firmware. The 80-pin TQFP package provides sufficient I/O for multi-segment LCD driving or keypad scanning without external I/O expanders.
The SAM88RC architecture is a well-known 8-bit core in the legacy embedded market, and Zilog continues to support this family with stable toolchains and a stable long-term supply. The combination of 64 KB Flash and the Z8-compatible ISA makes this MCU a familiar migration target for engineers replacing obsolete 80C51 or other legacy 8-bit designs.
ドロップイン代替品: S3F8S7BXZZ-TW8B — 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。
クイック比較ツール — 並列比較する代替部品を選択:
S3F8S7BXZZ-QW8B
✅ ドロップイン📋 参考代替品（カタログ未掲載）
S3F8S7BXZZ-TW8A
✅ ドロップイン📋 参考代替品（カタログ未掲載）
S3F8S7BXZZ-TW8B 最大定格＆電気的特性
| Core Architecture | SAM88RC (Z8-compatible) 8-bit |
| Program Memory | 64 KB Flash |
| パッケージ | 80-pin TQFP (TQFP-80) |
| 実装タイプ | Surface Mount |
| MSLレベル | 3 (168 hours) [assumed for TQFP-80, verify with manufacturer] |
| Family | S3F8S Series |
| Series Prefix | S3F8 |
S3F8S7BXZZ-TW8B 80-pin tqfp (tqfp-80) ピン配置ガイド
S3F8S7BXZZ-TW8B (80-pin tqfp (tqfp-80) 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: S3F8S7BXZZ-TW8B.
詳細は データシート をご参照ください。
主な用途
S3F8S7BXZZ-TW8B の用途: 6 件s: Home Appliance Control, HVAC Control Panels, Security Alarm Panels, Industrial Sensor Interface, Consumer Remote Controllers, Small Motor Drive (Brushed DC / Stepper).
Home Appliance Control
The S3F8S7BXZZ-TW8B's SAM88RC Z8-compatible 8-bit core, 64 KB Flash, and rich peripheral set make it a strong fit for home appliances such as washing machines, microwave ovens, induction cookers, and refrigerators. The 80-pin TQFP provides enough GPIO for keypad scanning, multi-segment display driving, and triac/relay control without external expanders. The interrupt controller and timers handle real-time events like button debounce, motor commutation timing, and sensor sampling, while the Flash density supports complete state-machine firmware plus diagnostic routines in a single chip.
おすすめ
HVAC Control Panels
HVAC indoor units, thermostats, and air-handler controllers rely on a deterministic 8-bit core with timers for compressor control, ADC for temperature sensors, and PWM for fan speed regulation. The S3F8S7BXZZ-TW8B delivers 64 KB Flash for zoning logic, schedule tables, and EEPROM emulation. Its wide operating voltage and the 80-pin TQFP footprint give designers room for LCD interface, IR receiver, and communication peripherals while keeping the BOM minimal.
おすすめ
Security Alarm Panels
Wired alarm panels need multiple zones, keypad scanning, siren drivers, and communication to a monitoring center. The S3F8S7BXZZ-TW8B's GPIO count and 64 KB Flash allow up to 16-32 zone inputs plus event logging without external I/O expanders. The SAM88RC interrupt controller ensures fast response to sensor triggers while the on-chip timers drive periodic supervision and watchdog functions.
おすすめ
Industrial Sensor Interface
Industrial controllers that aggregate analog sensors, drive displays, and communicate via UART benefit from the S3F8S7BXZZ-TW8B's integrated ADC channels, UART, and GPIO. The 64 KB Flash accommodates Modbus RTU or proprietary protocol stacks, while the 80-pin TQFP allows direct connection to 4-20 mA sensor front-ends and segment displays. The Z8-compatible ISA is widely supported by legacy industrial firmware bases.
おすすめ
Consumer Remote Controllers
Universal remotes, toy controllers, and consumer IR/RF handsets need a low-cost 8-bit MCU with timers for IR carrier generation and enough Flash for protocol libraries. The S3F8S7BXZZ-TW8B's 64 KB Flash fits NEC, RC5, RC6, and SIRC code tables simultaneously. The 80-pin TQFP supports keypad matrix scanning up to 8x8 plus LCD status indicators.
おすすめ
Small Motor Drive (Brushed DC / Stepper)
Brushed DC and unipolar stepper motor controllers benefit from the S3F8S7BXZZ-TW8B's PWM channels, timers, and ADC for back-EMF sensing. The 64 KB Flash handles acceleration/deceleration profiles and stall detection routines, while the 80-pin TQFP exposes enough GPIO for H-bridge direction control and current-sense amplifier inputs.
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: S3F8S7BXZZ-TW8B — 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 | S3F8S7BXZZ-QW8B | S3F8S7BXZZ-TW8A | PIC18F46K22-I/PT | PIC18F47K42-E/PT |
|---|---|---|---|---|---|
| Brand | Zilog | Zilog | Zilog | Microchip Technology | Microchip Technology |
| Package | 80-TQFP | 80-TQFP - same | 80-TQFP - same | 44-TQFP - DIFFERENT | 44-TQFP - DIFFERENT |
| Core Architecture | SAM88RC (Z8-compatible) 8-bit | SAM88RC 8-bit (same) | SAM88RC 8-bit (same) | PIC18 8-bit | PIC18 8-bit |
| Program Flash | 64 KB | 64 KB | 64 KB | 64 KB | 128 KB |
| Pin Count | 80 | 80 | 80 | 44 | 44 |
| Footprint Compatibility | N/A (reference) | Drop-in (same 80-TQFP) | Drop-in (same 80-TQFP) | PCB rework required (44-TQFP) | PCB rework required (44-TQFP) |
| Toolchain | Zilog Z8 toolchain | Zilog Z8 (same) | Zilog Z8 (same) | Microchip MPLAB X (different) | Microchip MPLAB X (different) |
主な差別化要因
- Z8-compatible ISA with long legacy code base （vs PIC18F46K22-I/PT)
- High pin count (80) without external expanders （vs PIC18F46K22-I/PT (44 pins))
- Dedicated S3F8S7B family ecosystem （vs Cross-brand 8-bit MCUs)
設計ノート
Estimated: The S3F8S7BXZZ-TW8B's 80-pin TQFP footprint is shared with other S3F8S7B suffix variants (TW8A, QW8B) but NOT with smaller 8-bit MCUs like PIC18F46K22-I/PT (44-TQFP). Confirming pinout against the Zilog datasheet is mandatory before any substitution - the 80-pin TQFP pad pattern is unique and not interchangeable with 44/64-pin layouts.
Use a 0.1 uF ceramic decoupling capacitor as close as possible to each VDD pin, plus a bulk 10 uF tantalum or ceramic capacitor on the main supply rail. The SAM88RC core is sensitive to supply noise during Flash programming and ADC sampling, so keep analog and digital supply traces separated and star-grounded at the MCU.
Route the external crystal/oscillator traces symmetrically and within 5 mm of the MCU's XTAL pins. Keep them away from switching nodes (PWM outputs, relay drivers) and guard them with a ground pour to reduce EMI injection into the SAM88RC's clock circuit. Add a 1 M ohm parallel resistor across the crystal if startup margin is poor.
コンプライアンス情報
Compliance data not provided in the verified web data; verify against the Zilog product page or manufacturer datasheet before use in regulated markets.
