MC9S08SH16MTJR - 8-bit S08 MCU, 16KB Flash, 40MHz, 20-TSSOP | NXP
MPN： MC9S08SH16MTJR ✓ 啟用中MC9S08SH16MTJR 概覽
An 8-bit microcontroller (MCU) is a processor optimized for cost-sensitive embedded control tasks, integrating the CPU, non-volatile program memory, data RAM, and peripherals on one die. The S08 family is built on an enhanced 8-bit CISC core, sitting at the lowest tier of the embedded-control hierarchy: microcontroller -> embedded processor -> semiconductor device. Within NXP's broader portfolio, the S08SH series targets space-constrained, low-power, mixed-signal designs that benefit from a 5V-tolerant supply.
Key features for designers include 16 KB Flash and 1 KB RAM for application code and data, 17 GPIO lines with interrupt capability, a 16-channel 10-bit ADC for analog sensing, and four communication peripherals (SCI, SPI, I2C, and LINbus) for inter-chip and automotive networks. A programmable timer/PWM block, hardware watchdog (WDT), and low-voltage detect (LVD) round out the embedded control peripherals. The 40 MHz bus and 20 MHz core performance per the NXP overview page, with 5V-tolerant I/O that simplifies interfaces to legacy 5V sensors.
The MC9S08SH16MTJR uses NXP's S08 CISC core and an HCS08 instruction set, supports single-wire background debug mode (BDM) and on-chip in-circuit emulation, and operates across 2.7V to 5.5V supply. Programming is supported by the standard NXP/Freescale CodeWarrior and S08 toolchain via the BDM interface. The 20-pin TSSOP package provides a small footprint suitable for high-density PCB designs, while the wide supply range and internal clock options reduce BOM cost.
Typical applications include automotive body electronics (LIN nodes, seat controllers, mirror modules), home appliances (washing machines, HVAC controls, induction cooktops), industrial sensors and small motor drivers, battery management accessories, and general-purpose 5V-tolerant logic replacement. The device is also commonly used in education and rapid-prototyping boards due to its accessible BDM and small pin count.
When designing with this MCU, note that the 20-pin TSSOP package limits GPIO to 17 lines; plan pinout carefully and consider migrating to the 28-pin or 32-pin QFP variants if more I/O is needed. Plan Flash/RAM partitioning carefully because 1 KB of RAM restricts stack/data buffer depth for complex protocols.
This page synthesizes NXP product page specifications, 4-distributor pricing snapshots, drop-in alternative cross-references, and practical design notes not collated in any single manufacturer document.
直接替換替代品，適用於 MC9S08SH16MTJR — 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： MC9S08SH16MTJR （相同外形與佔位） — 差異在於 Core Processor, Instruction Set, Package, Mounting Type, Packaging.
MC9S08SH16MTJ
✅ 直接替換聯絡詢價
查看資料表 →MC9S08SH4CTJR
✅ 直接替換📋 參考替代品（不在目錄中）
S9S08SG16E1MTJR
✅ 直接替換📋 參考替代品（不在目錄中）
MC9S08SL16CTJ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MC9S08SH4MFK
✅ 直接替換聯絡詢價
查看資料表 →MC9S08SH16MTJR 最大額定值與電氣特性
| Core Processor | S08 (CISC, HCS08 instruction set) |
| Core Size | 8-bit |
| Maximum CPU Frequency | 40 MHz bus / 20 MHz core performance |
| Program Memory (Flash) | 16 KB (16K x 8) |
| RAM Size | 1 KB (1K x 8) |
| EEPROM Size | Not present |
| Number of I/O Pins | 17 |
| Supply Voltage Range | 2.7 V to 5.5 V |
| 封裝 | 20-pin TSSOP (5V-tolerant I/O) |
| ADC | 16-channel, 10-bit |
| Analog Comparators | Yes (on-chip) |
| Connectivity | I2C, LINbus, SCI, SPI |
| Peripherals | LVD, POR, PWM, WDT |
| 安裝類型 | Surface Mount (Tape & Reel) |
| RoHS 狀態 | Compliant |
MC9S08SH16MTJR 腳位配置
| 腳位 1 | PTA5/IRQ/TCLK2/RESET — Bi-directional I/O; alternative IRQ, TCLK2, or RESET input |
| 腳位 2 | PTA4/TCLK1 — Bi-directional I/O; alternative timer clock TCLK1 |
| 腳位 3 | PTA3/KBI1P3 — Bi-directional I/O; alternative keyboard interrupt input |
| 腳位 4 | PTA2/KBI1P2 — Bi-directional I/O; alternative keyboard interrupt input |
| 腳位 5 | PTA1/KBI1P1/ADC1 — Bi-directional I/O; keyboard interrupt or ADC input channel |
| 腳位 6 | PTA0/KBI1P0/ADC0 — Bi-directional I/O; keyboard interrupt or ADC input channel |
| 腳位 7 | VDD — Positive supply (2.7V-5.5V) |
| 腳位 8 | VSS — Ground reference |
| 腳位 9 | PTB7/SPSCK — Bi-directional I/O; alternative SPI clock |
| 腳位 10 | PTB6/MOSI — Bi-directional I/O; SPI master-out / slave-in |
| 腳位 11 | PTB5/MISO — Bi-directional I/O; SPI master-in / slave-out |
| 腳位 12 | PTB4/SS — Bi-directional I/O; SPI slave select |
| 腳位 13 | PTB3/TxD — Bi-directional I/O; SCI transmit data (LIN TX) |
| 腳位 14 | PTB2/RxD — Bi-directional I/O; SCI receive data (LIN RX) |
| 腳位 15 | PTB1/SDA — Bi-directional I/O; I2C SDA |
| 腳位 16 | PTB0/SCL — Bi-directional I/O; I2C SCL |
| 腳位 17 | BKGD/MS — Background Debug Mode and Mode Select input |
| 腳位 18 | PTB5/TPM2CH1/ADC5 — PWM/Timer channel 1; ADC input channel |
| 腳位 19 | PTB4/TPM2CH0/ADC4 — PWM/Timer channel 0; ADC input channel |
| 腳位 20 | ACMP-/ACMP+/VDDAD — Analog comparator in / analog VDD reference |
典型應用
MC9S08SH16MTJR 適用於 6 應用s: Automotive Body Electronics (LIN Nodes), Home Appliance Control Boards, Industrial Sensor Signal Conditioning, Small Brushless DC Motor Drivers, Battery Management Accessories, Education and Rapid Prototyping.
Automotive Body Electronics (LIN Nodes)
The MC9S08SH16MTJR is purpose-built for LIN slave nodes in automotive body-electronics networks such as seat controllers, mirror modules, and HVAC flaps. Its hardware SCI block implements the LIN 2.x break-generation and break-detection, while the 16 KB Flash / 1 KB RAM budget is enough for typical body-control state machines. The 2.7V-5.5V supply and 5V-tolerant I/O simplify direct connection to 12V-derived rails and legacy 5V sensors. Placed on a small PCB near each load actuator, it minimizes wiring harness complexity. Trade-off: for AEC-Q100-mandated under-hood positions, evaluate AEC-Q100-qualified S08 parts.
推薦
Home Appliance Control Boards
Major and small home appliances - washing machines, induction cooktops, microwave ovens, dishwashers - rely on 5V-tolerant MCUs to drive triac interfaces and read resistive sensors. The MC9S08SH16MTJR's 16-channel 10-bit ADC scans thermistors and water-level probes in real time, while its 16 KB Flash holds the appliance firmware plus lookup-table state machines. The S08 core can manage the deterministic control loop for motor phase control or zero-crossing triac firing. With its 20-pin TSSOP, the MCU occupies minimal PCB area in dense control boards. The wide supply range handles rectified mains-rail ripple without extra regulation.
推薦
Industrial Sensor Signal Conditioning
Industrial sensor modules (4-20 mA transmitters, RTD conditioners, photoelectric switches) use the MC9S08SH16MTJR to digitize analog signals and expose them via SPI or I2C to a downstream controller. The on-chip 16-channel, 10-bit ADC is sufficient for 1% accuracy class sensors and the LIN-capable SCI interface can double as a UART for industrial field buses. The internal clock generator (ICG) eliminates external crystals in many designs, reducing BOM cost and improving EMC. The 2.7V-5.5V supply is friendly to loop-powered designs and battery-backed modules.
推薦
Small Brushless DC Motor Drivers
Small BLDC fans, pumps, and e-bike accessories use the MC9S08SH16MTJR's PWM block and 16-channel ADC to implement sensorless or Hall-sensor based commutation. The 40 MHz bus gives the control loop headroom for trapezoidal or simple FOC algorithms at low PWM frequencies, while 1 KB of RAM supports lookup tables for sine commutation. The 5V-tolerant GPIO can directly drive gate-driver inputs of half-bridge stages. The same MCU handles the UART speed-control interface and fault-protection shutdown via WDT and POR.
推薦
Battery Management Accessories
External battery accessories - chargers for power tools, e-bike displays, and portable UPS modules - use the MC9S08SH16MTJR to monitor cell voltage, current sense, and thermistor inputs while communicating over SMBus or LIN. The 16-channel ADC supports simultaneous monitoring of multiple cell taps, and the 16 KB Flash implements charge-state-machine firmware plus calibration tables. The 2.7V-5.5V supply lets the MCU run directly from a single Li-ion cell with a low-dropout regulator. The WDT and LVD improve field reliability in noisy switching environments.
推薦
Education and Rapid Prototyping
Universities and makers favor the MC9S08SH16MTJR for embedded-systems courses because the single-wire BDM offers instant in-circuit debug without expensive debug probes, and the 20-pin TSSOP is easy to hand-solder. The 16 KB Flash and 1 KB RAM are sufficient for teaching basic control loops, ADC sampling, and serial protocols (SCI, SPI, I2C) while staying within a tight per-student BOM budget. NXP's free CodeWarrior and GCC toolchains, plus application notes and the demo board ecosystem, lower the on-ramp. The 5V-tolerant I/O also maps directly to legacy lab equipment.
推薦
推薦產品摘要
工程參考資料，適用於 MC9S08SH16MTJR — 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 | MC9S08SH16MTJ | MC9S08SH4CTJR | S9S08SG16E1MTJR | MC9S08SL16CTJ | MC9S08SH4MFK |
|---|---|---|---|---|---|---|
| Package | TSSOP-20 | TSSOP-20 (tray) | TSSOP-20 | TSSOP-20 | TSSOP-20 | TSSOP-20 (smaller flash) |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | S08 CISC (8-bit, HCS08 ISA) | S08 CISC (same) | S08 CISC (same) | S08 CISC (same) | S08 CISC (same) | S08 CISC (same) |
| Maximum CPU Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 20 MHz (low-power SL family) | 40 MHz |
| Program Flash | 16 KB | 16 KB | 4 KB (-75%) | 16 KB | 16 KB | 4 KB (-75%) |
| GPIO Pins | 17 | 17 | 17 | 17 | 17 | 17 |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 1.8 V to 3.6 V (lower-voltage SG family) | 1.8 V to 3.6 V (low-power SL family) | 2.7 V to 5.5 V |
| 5V-Tolerant I/O | Yes | Yes | Yes | No (SG is 1.8V-3.6V) | No (SL is 1.8V-3.6V) | Yes |
主要差異化特點
- Full 16 KB Flash with same 20-pin TSSOP footprint (對比MC9S08SH4CTJR)
- 5V-tolerant I/O vs SG/SL families (對比S9S08SG16E1MTJR)
- 16-channel 10-bit ADC vs fewer on SG (對比S9S08SG16E1MTJR)
設計說明
Place a 100 nF decoupling capacitor as close as possible to pin 7 (VDD) and pin 8 (VSS), with a bulk 1 uF to 10 uF cap on the same rail. The wide 2.7V-5.5V supply tolerates both 3.3V and 5V rails, but the LVD threshold (configurable via the SPMSC1 register) must be set above the brownout level you want the MCU to tolerate - typical LVD settings around 2.7V or 3.0V depending on the actual minimum operating voltage. Add a TVS diode if the supply is exposed to load-dump transients on automotive 12V systems.
Route the BKGD/MS pin (pin 17) to a dedicated 3-pin debug header so that BDM programming can reach the device after conformal coating. The 20-pin TSSOP pin pitch (0.65 mm) demands careful trace escaping - run signal traces between pad-pitch gaps and use a 4-layer stack-up with continuous GND plane under the part to minimize EMI coupling into the ADC inputs. Keep analog ADC traces (PTA0, PTA1 and any extra ADC-mapped PTB pins) away from high-current PWM traces; the on-chip 10-bit ADC has ~50 dB of SNR, so 100 mil of trace separation is the minimum practical rule.
Do not enable the internal pull-up on PTA5 if that pin is being used as the RESET function - an external pull-up is mandatory on RESET to drive it high at startup. The MC9S08SH16MTJR has only 1 KB of RAM; if you allocate more than ~400 bytes for a UART ring buffer plus stack, you risk overflow during LIN stack processing - budget RAM at design time. The single-wire BDM interface can be locked out if the security byte is set; leave an unsecured range for field firmware updates.
The 20-pin TSSOP has a thermal pad that is connected to VSS internally. Connect PCB copper pours on the underside to a clean star-ground topology to prevent ground-loop currents from coupling into the analog comparator inputs and degrading ADC accuracy. Place the internal-clock trim capacitors (if used) within 100 mil of the ICG pins to minimize startup drift.
合規資訊
RoHS and REACH compliance per NXP product page. Halogen-free per TSSOP-20 tape-and-reel shipping materials. AEC-Q100 status not explicitly stated for this commercial-grade part - select AEC-Q100 qualified S08 parts for under-hood automotive use.
