MC9S08SH32CTL - 8-bit S08 MCU 32KB Flash 40MHz | NXP
MPN： MC9S08SH32CTL ✗ 停產MC9S08SH32CTL 概覽
An 8-bit microcontroller is a single-chip computer whose CPU processes data 8 bits at a time. Within the embedded-systems hierarchy, the MCU sits above discrete logic and below 16/32-bit application processors, integrating the processor core, Flash program memory, RAM, timers, analog peripherals (ADC) and serial communication blocks on one die. The S08 (HCS08) family is NXP's enhanced 8-bit architecture, upward compatible with the HC08 instruction set plus the added BGND instruction, and is designed for cost-sensitive embedded control in the 5-volt range.
Key features of the MC9S08SH32 include a 40 MHz HCS08 CPU with up to 32 interrupt/reset sources, 32KB of on-chip Flash program memory, a 12-channel 10-bit ADC, integrated timers, and up to 16 GPIO pins with enhanced serial communications interfaces. These peripherals allow a single chip to handle sensing (10-bit ADC), actuation (timers), and communication in one low-cost package.
For development support, the device provides a single-wire background debug interface (BDM) with breakpoint capability for in-circuit debugging, plus an on-chip debug (ICE) module containing two comparators and nine trigger modes, with an eight-deep FIFO for storing change-of-flow address and event-only data. This enables low-cost debugging without an emulator socket.
Typical applications include automotive body electronics, industrial control, appliance control, power supplies and other cost-sensitive embedded systems requiring 5V noise immunity and AEC-Q100 grade reliability.
A key design consideration: this part is End of Life per NXP's product page, so new designs should evaluate the pin- and software-compatible S08SG family (NXP states S08SH is pin, tool and software compatible with S08SG) or migration targets such as MC9S08SG32/MC9S08EL32 identified in the NXP community for replacements.
This page synthesizes distributor pricing context, drop-in alternatives, and EOL cross-reference guidance not found in the manufacturer datasheet alone.
直接替換替代品，適用於 MC9S08SH32CTL — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MC9S08SH32CTL （相同外形與佔位） — 差異在於 Package, Core Processor, Debug Interface.
MC9S08SH16CTL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MC9S08SH8CTL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MC9S08SH4CTL
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
S9S08SG32E1MTL
✅ 直接替換📋 參考替代品（不在目錄中）
MC9S08EL32CTL
✅ 直接替換📋 參考替代品（不在目錄中）
MC9S08SH32CTL 最大額定值與電氣特性
| Core Processor | S08 (HCS08) 8-bit |
| Core Size | 8-bit |
| Architecture | CISC |
| 最大時脈頻率 | 40 MHz |
| Flash Memory | 32KB (32K x 8) |
| 供應電壓 | 3.3 V / 5 V |
| Product Series | S08SH |
| ADC Resolution | 10-bit |
| ADC Channels | 12-channel |
| GPIO Count | Up to 16 |
| 資料匯流排寬度 | 8 bit |
| Interrupt/Reset Sources | Up to 32 |
| Debug Interface | Single-wire background debug (BDM) with on-chip ICE module |
| Qualification | AEC-Q100 (automotive) |
| 封裝 | 28-TSSOP |
| 安裝類型 | Surface Mount |
| Packaging | Tube |
MC9S08SH32CTL 28-tssop 腳位配置指南
MC9S08SH32CTL（28-tssop 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： MC9S08SH32CTL.
請參閱 資料表 以查看完整腳位配置。
典型應用
MC9S08SH32CTL 適用於 6 應用s: Automotive Body Electronics, Industrial Control and Automation, Power Supply Supervision, Appliance and Consumer Control, Sensor Signal Acquisition, Legacy Product Maintenance and Last-Time-Buy.
Automotive Body Electronics
The MC9S08SH32CTL's AEC-Q100 qualification and true 5V I/O make it well suited to automotive body-control functions such as window lift modules, seat adjusters, lighting switches and mirror controllers. In these nodes the 12-channel 10-bit ADC digitizes switch positions, potentiometer sensors and supply diagnostics, while integrated timers generate PWM for lamp dimming and motor drive. The 40 MHz HCS08 core executes the HC08 instruction set with the added BGND instruction and handles up to 32 interrupt/reset sources, so multiple switch inputs and fault conditions are serviced deterministically. Because NXP lists the part as End of Life, new automotive modules should use the pin-compatible S9S08SG32E1MTL instead; existing programs can secure last-time-buy stock of MC9S08SH32CTL for legacy service builds.
推薦
Industrial Control and Automation
In industrial control panels, sensor hubs and small automation nodes, the MC9S08SH32CTL offers 5V-tolerant noise immunity that 3.3V-only MCUs lack, which matters in electrically noisy factory environments with relays, contactors and motor drives. The 12-channel 10-bit ADC reads analog setpoints and current-sense signals; up to 16 GPIO lines drive indicators, optocouplers and relays; and enhanced serial communications interfaces link to HMIs or PLC backplanes. The single-wire background debug interface enables field servicing with minimal test points. Developers should note the S08SH is pin, tool and software compatible with the active S08SG family per NXP, so new industrial designs can start on S08SG while the firmware, toolchain and PCB knowledge transfer unchanged, avoiding EOL sourcing risk altogether.
推薦
Power Supply Supervision
Switch-mode power supplies and AC-DC adapters benefit from the MC9S08SH32CTL's combination of a 10-bit ADC and fast 40 MHz control loop, enabling digital supervision of output voltage, current and temperature with fault-response times in the microsecond range. Timers generate PWM for fan control or primary-side regulation, while the 32KB Flash holds multi-protocol firmware including PMBus-style command handling in higher-end units. The 5V operation directly matches the bias rails common in offline supply secondary circuits, eliminating a separate 3.3V regulator. Because the die includes an on-chip debug module with eight-deep FIFO tracing, firmware updates and fault analysis can be performed through the single-wire BDM interface in production fixtures, supporting lean manufacturing test strategies.
推薦
Appliance and Consumer Control
White goods, small kitchen appliances and HVAC controllers use the MC9S08SH32CTL as a compact, cost-optimized brain: the 10-bit ADC reads NTC temperature sensors and user potentiometers, timers drive triac firing or relay sequencing, and 32KB Flash accommodates full state machines plus calibration tables. The 28-TSSOP package minimizes PCB area on single-sided control boards, and 5V I/O directly interfaces with the optocoupled and relay-driven circuitry typical of mains-connected appliances. AEC-Q100 process pedigree gives margin over consumer-grade qualification even though appliances are not automotive. For new appliance platforms, designers should select the software-compatible S08SG family given S08SH's End of Life status, preserving tool and pin compatibility to de-risk the migration.
推薦
Sensor Signal Acquisition
Distributed sensor nodes - pressure, level, position and temperature - pair well with the MC9S08SH32CTL because the integrated 12-channel 10-bit ADC converts up to twelve sensor channels without external front-end silicon, and the 40 MHz core applies filtering, linearization and threshold logic locally before reporting over serial interfaces. The 32KB Flash stores multi-point calibration tables, and the on-chip debug module with nine trigger modes and eight-deep FIFO simplifies verifying interrupt latency and ADC sampling behavior during commissioning. Its 5V supply supports legacy 4-20mA-style transmitters and ratiometric sensors referenced to a 5V rail. Long-term programs should implement on the active, pin-compatible S08SG successor so sensor firmware and analog front-end layout remain unchanged through the family transition.
推薦
Legacy Product Maintenance and Last-Time-Buy
The primary application for MC9S08SH32CTL going forward is sustaining existing production: NXP's product page lists the part as End of Life with discontinuance and replacement product change notices. Procurement teams should quantify remaining program lifetime, place last-time-buy orders through authorized distributors such as DigiKey and Mouser while stock exists, and qualify the pin-, tool- and software-compatible S08SG family (for example S9S08SG32E1MTL) as the second source. The NXP community identifies MC9S08SG32 and MC9S08EL32 as replacement directions; firmware teams should verify peripheral register-level differences and re-run qualification. Planning this migration early avoids the cost squeeze of broker-market pricing for an obsolete automotive-qualified MCU.
推薦
推薦產品摘要
工程參考資料，適用於 MC9S08SH32CTL — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MC9S08SH16CTL | MC9S08SH8CTL | S9S08SG32E1MTL | MC9S08EL32CTL |
|---|---|---|---|---|---|
| Package | 28-TSSOP | 28-TSSOP - same | 28-TSSOP - same | 28-TSSOP - same | 28-TSSOP - same |
| Brand | NXP Semiconductors (Freescale) | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core / Max Clock | S08 (HCS08), 40 MHz | S08, 40 MHz | S08, 40 MHz | S08, 40 MHz | S08, 40 MHz |
| Flash Memory | 32KB | 16KB | 8KB | 32KB-class | 32KB |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
主要差異化特點
- Largest Flash in the pin-compatible S08SH 28-TSSOP family (對比MC9S08SH16CTL)
- AEC-Q100 automotive qualification with 5V I/O (對比MC9S08SH8CTL)
- Active supply continuity (對比S9S08SG32E1MTL)
設計說明
The single most important design action is lifecycle planning: NXP lists MC9S08SH32CTL as End of Life on its official product page. Do not start a new design on this die. For existing designs, confirm remaining distributor stock at DigiKey/Mouser, size a last-time-buy with attrition margin, and qualify the pin-, tool- and software-compatible S08SG family (S9S08SG32E1MTL) in parallel so a PCB-identical second source exists before SH stock depletes.
The 28-TSSOP footprint is shared across the entire S08SH family (SH4/SH8/SH16/SH32) and, per NXP, with S08SG. Lay out the board with all power pins decoupled with 100 nF ceramics placed within a few millimeters of the supply pins, and break out the single-wire background debug (BDM) pin to a 4-6 pin header even in production boards - in-field firmware updates and fault analysis via the on-chip debug module depend on it, and retrofitting test points to a potted or conformally coated assembly is expensive.
When migrating firmware from S08SH to S08SG or S08EL (both cited by NXP as replacement directions), do not assume binary compatibility of peripheral registers even though the toolchain and package carry over. Re-verify ADC channel mapping on the 28-TSSOP pinout, timer channel assignments, and interrupt vector tables against the successor's datasheet, then re-run any AEC-Q100-related system qualification the end customer requires before releasing the change.
合規資訊
AEC-Q100 automotive qualification stated in distributor parametric data (datasheets.com). RoHS/REACH/lead-free status not stated in the verified data; consult the NXP product page's Environmental Quality section for MC9S08SH32CTL.
