MC9S08GT16AMFBE - 8-bit HCS08 MCU 16KB Flash 40MHz QFP-44 | NXP
MPN: MC9S08GT16AMFBE ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.8 | $68.00 |
| 100 | $5.95 | $595.00 |
| 500 | $5.2 | $2,600.00 |
| 1,000 | $4.65 | $4,650.00 |
MC9S08GT16AMFBE Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data memory, and programmable I/O peripherals. The HCS08 family is NXP's (formerly Freescale's) line of 8-bit microcontrollers built on an enhanced HC08 instruction set with the added BGND instruction, optimized for low-power, cost-sensitive embedded control. Within the broader semiconductor taxonomy, an MCU belongs to the class of microcontrollers -> microcomputers -> integrated circuits -> semiconductors, and the HCS08 family specifically targets cost-effective general-purpose applications with low-power modes (including Stop 2 and Stop 3 with auto-wake-up at 20 nA typical).
Key features of the MC9S08GT16AMFBE include an on-chip 8-channel 10-bit ADC for analog signal acquisition, multiple timer/PWM channels for motor and lighting control, software-selectable pull-ups on port inputs to reduce BOM cost, and support for up to 32 interrupt sources. Its 40 MHz internal bus clock provides ample headroom for protocol stacks such as LIN or UART-based sensor interfaces. The HCS08 core retains backward compatibility with HC08 code, easing migration from legacy Freescale designs.
Typical applications span white goods and home appliances, HVAC controllers, small motor control, low-end security keypads, sensor hubs, and battery-powered consumer devices. The wide 1.8V to 3.6V supply range enables direct Li-ion battery operation, while the low-power Stop modes extend battery life in intermittent-duty products.
When designing with this MCU, ensure adequate decoupling (typically 100 nF + 10 uF near VDD) and that the BKGD/MS pin is reserved for in-circuit debug/programming. Watchdog servicing must be implemented for safety-critical applications. This page consolidates distributor pricing, drop-in alternatives, and design notes that are not available from the manufacturer datasheet alone.
Drop-in alternatives for MC9S08GT16AMFBE — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MC9S08GT16AMFBE (same form factor and footprint) — differing in Package, Instruction Set, Operating Temperature, Mounting Type, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S08GT16ACFBE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08GT16AMFDE
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC9S08GT8AMFBE
✅ Drop-In✓ In Stock
$4.65 / Unit
View Datasheet →MC9S08GT16ACFBER
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08GT60ACFBE
✅ Drop-In✓ In Stock
$9.85 / Unit
View Datasheet →MC9S08GT16AMFBE Maximum Ratings & Electrical Characteristics
| Core | HCS08 (S08) |
| Core Size | 8-bit |
| Maximum Clock Speed | 40 MHz |
| Program Memory Size | 16 KB (16K x 8) Flash |
| RAM Size | 2 KB (2K x 8) |
| EEPROM Size | Not present |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Number of I/O | 36 (maximum) |
| Package | 44-LQFP / 44-QFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Connectivity | I2C, SCI, SPI |
| Peripherals | LVD, POR, PWM, WDT |
| ADC | 10-bit |
| Operating Temperature | -40 C to +85 C |
| Instruction Set Compatibility | HC08 with BGND instruction |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
MC9S08GT16AMFBE Pin Configuration
| Pin 1 | PTD0/TxD1 — Port D bit 0 / SCI1 transmit |
| Pin 2 | PTD1/RxD1 — Port D bit 1 / SCI1 receive |
| Pin 3 | PTD2 — Port D bit 2 (GPIO / IRQ) |
| Pin 4 | PTD3 — Port D bit 3 (GPIO) |
| Pin 5 | VDD — Supply voltage (1.8V-3.6V) |
| Pin 6 | VSS — Ground |
| Pin 7 | PTD4 — Port D bit 4 (GPIO) |
| Pin 8 | PTD5 — Port D bit 5 (GPIO) |
| Pin 9 | PTD6 — Port D bit 6 (GPIO) |
| Pin 10 | PTD7 — Port D bit 7 (GPIO) |
| Pin 11 | PTE0 — Port E bit 0 (GPIO / TCLK) |
| Pin 12 | PTE1 — Port E bit 1 (GPIO) |
| Pin 13 | BKGD/MS — Background Debug / Mode Select |
| Pin 14 | RESET — Reset input (active low) |
| Pin 15 | PTA0 — Port A bit 0 (GPIO / ADC0) |
| Pin 16 | PTA1 — Port A bit 1 (GPIO / ADC1) |
| Pin 17 | PTA2 — Port A bit 2 (GPIO / ADC2) |
| Pin 18 | PTA3 — Port A bit 3 (GPIO / ADC3) |
| Pin 19 | PTA4 — Port A bit 4 (GPIO / ADC4) |
| Pin 20 | PTA5 — Port A bit 5 (GPIO / ADC5) |
| Pin 21 | PTA6 — Port A bit 6 (GPIO / ADC6) |
| Pin 22 | PTA7 — Port A bit 7 (GPIO / ADC7) |
| Pin 23 | PTB0 — Port B bit 0 (GPIO / SDA) |
| Pin 24 | PTB1 — Port B bit 1 (GPIO / SCL) |
| Pin 25 | PTB2 — Port B bit 2 (GPIO / MOSI) |
| Pin 26 | PTB3 — Port B bit 3 (GPIO / MISO) |
| Pin 27 | PTB4 — Port B bit 4 (GPIO / SPSCLK) |
| Pin 28 | PTB5 — Port B bit 5 (GPIO / SS) |
| Pin 29 | PTB6 — Port B bit 6 (GPIO) |
| Pin 30 | PTB7 — Port B bit 7 (GPIO) |
| Pin 31 | PTC0 — Port C bit 0 (GPIO / TPMC0) |
| Pin 32 | PTC1 — Port C bit 1 (GPIO / TPMC1) |
| Pin 33 | PTC2 — Port C bit 2 (GPIO / TPMC2) |
| Pin 34 | PTC3 — Port C bit 3 (GPIO / TPMC3) |
| Pin 35 | PTC4 — Port C bit 4 (GPIO / TPMC4) |
| Pin 36 | PTC5 — Port C bit 5 (GPIO / TPMC5) |
| Pin 37 | PTC6 — Port C bit 6 (GPIO) |
| Pin 38 | PTC7 — Port C bit 7 (GPIO) |
| Pin 39 | VDD — Supply voltage (second VDD pin) |
| Pin 40 | VSS — Ground (second VSS pin) |
| Pin 41 | PTE2 — Port E bit 2 (GPIO) |
| Pin 42 | PTE3 — Port E bit 3 (GPIO) |
| Pin 43 | PTE4 — Port E bit 4 (GPIO) |
| Pin 44 | PTE5 — Port E bit 5 (GPIO) |
Typical Applications
MC9S08GT16AMFBE is suitable for 6 applications: White Goods and Home Appliance Control, HVAC Thermostat and Climate Control, Small DC Motor and Fan Control, Industrial Sensor Hubs and Data Loggers, Low-End Security Keypads and Access Panels, Battery-Powered Consumer Electronics.
White Goods and Home Appliance Control
The MC9S08GT16AMFBE is widely deployed in white-goods controllers such as washing machines, dishwashers, and microwave ovens where it drives relay logic, reads temperature and water-level sensors, and scans user keypads. Its 1.8V to 3.6V supply range allows direct 3.3V regulation from the appliance's rectified mains rail, while the 40 MHz HCS08 core easily handles sequencer logic, PWM for buzzer and triac-style drivers, and basic UI loops. The on-chip 10-bit ADC captures NTC thermistor and water-level sensor readings, and the PWM module generates variable-speed control signals. Compared with discrete logic, integrating these peripherals onto a single 8-bit MCU cuts the BOM cost significantly while keeping firmware portable.
Recommended
HVAC Thermostat and Climate Control
In HVAC wall thermostats and small climate-control boards, the MC9S08GT16AMFBE samples temperature and setpoint encoders, drives triac outputs for HVAC dampers, and communicates with the indoor unit over UART or a simple LIN-style link. The 16 KB Flash comfortably stores scheduling logic and adaptive control firmware, while 2 KB of RAM provides headroom for small lookup tables such as PI(D) constants and energy log buffers. Low-power Stop modes (down to 20 nA) extend battery backup life during power-loss events, and the on-chip LVD reliably detects brownout conditions to protect EEPROM-emulated settings. The 36 GPIO lines easily accommodate the keypad, LCD bus, and triac control signals of a typical thermostat.
Recommended
Small DC Motor and Fan Control
The MC9S08GT16AMFBE's PWM module and timer channels make it well-suited for brushed DC motor and small fan speed controllers, including computer case fans and appliance blowers. At 40 MHz the HCS08 core can execute field-oriented control algorithms for small BLDC motors at modest RPM, or simple two-state PI loops for brushed fans. The integrated 10-bit ADC reads back EMF or tachometer signals, while the SCI peripheral provides a UART link for host-controlled fan curves. A single 3.3V rail and 44-LQFP footprint simplify PCB layout in compact fan controllers, and the Flash's endurance rating supports firmware updates over the UART.
Recommended
Industrial Sensor Hubs and Data Loggers
In low-cost industrial sensor hubs that aggregate 4-20 mA loops, thermistors, and digital inputs, the MC9S08GT16AMFBE offers 16 KB of Flash for Modbus RTU framing and sensor calibration tables, plus 2 KB of RAM for circular logging buffers. Its I2C and SPI peripherals let the MCU front-end additional digital sensors (e.g., accelerometers or environmental sensors), while the SCI provides the Modbus RS-485 uplink. The 1.8V to 3.6V supply accommodates single-cell Li-SOCl2 cells for remote, battery-powered installations, and Stop modes with auto-wake from internal timers enable sub-1 mA average current draw over typical 1-second sample intervals.
Recommended
Low-End Security Keypads and Access Panels
Access-control keypads and small alarm panels frequently use the MC9S08GT16AMFBE for its 36 GPIO lines, which can directly scan a 4x4 matrix keypad without external muxes. The 40 MHz core handles debounce, PIN hashing, and EEPROM-emulated credential storage inside 16 KB of Flash, while the on-chip LVD prevents lockout corruption during brownout. The PWM module drives a small piezo buzzer for key-press feedback, and the SCI peripheral can interface with a host panel over a short-haul RS-485 link. The wide supply range supports both 3V battery backup and 5V-regulated primary rails via on-chip clamping.
Recommended
Battery-Powered Consumer Electronics
Consumer devices such as remote controls, electronic toys, and personal-care appliances can use the MC9S08GT16AMFBE as a low-cost main controller with sub-1 uA sleep current. The HCS08 core's low-power technology plus Stop 2/Stop 3 modes (typical 20 nA) let the MCU wake only on a button press or a periodic RTI tick. With 16 KB of Flash and 2 KB of RAM, the device comfortably runs small protocol stacks, LED animation sequences, or motor-control loops. The 1.8V minimum supply enables direct operation from a single alkaline or NiMH cell via a boost converter, and the BDM debug pin allows in-system firmware updates during production.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08GT16AMFBE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08GT16ACFBE | MC9S08GT16AMFDE | MC9S08GT8AMFBE | MC9S08GT16ACFBER | MC9S08GT60ACFBE |
|---|---|---|---|---|---|---|
| Package | 44-LQFP (10x10 mm) | 44-LQFP (10x10 mm) - same | 44-LQFP (10x10 mm) - same | 44-LQFP (10x10 mm) - same | 44-LQFP (10x10 mm) - same | 44-LQFP (10x10 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Flash | 16 KB | 16 KB | 16 KB | 8 KB | 16 KB | 60 KB |
| RAM | 2 KB | 2 KB | 2 KB | 1 KB | 2 KB | 4 KB |
| Max Clock Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| GPIO Count | 36 | 36 | 36 | 36 | 36 | 36 |
| Operating Temperature | -40 C to +85 C | -40 C to +105 C (extended) | -40 C to +85 C | -40 C to +85 C | -40 C to +105 C (extended) | -40 C to +85 C |
| Connectivity | I2C, SCI, SPI | I2C, SCI, SPI | I2C, SCI, SPI | I2C, SCI, SPI | I2C, SCI, SPI | I2C, SCI, SPI |
Key Differentiators
- Balanced Flash/RAM ratio for cost-sensitive control (vs MC9S08GT8AMFBE)
- Drop-in compatibility with larger Flash variant (vs MC9S08GT60ACFBE)
- Extended temperature option in same package (vs MC9S08GT16ACFBE)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 5 mm of each VDD pin (44-LQFP has two VDD pins: 5 and 39). Add a bulk 10 uF tantalum or ceramic near the MCU's regulator. The 1.8V to 3.6V supply requires a clean LDO or DC-DC output - if using a switching regulator, add an LC pi-filter to keep switching ripple under 50 mVpk-pk to prevent ADC noise pickup on PTA channels. The on-chip LVD can be programmed to assert RESET at a brownout threshold; enable this for safety-critical firmware paths.
Keep the BKGD/MS pin (pin 13) routed with a clean trace and 10 kohm pull-up to VDD for normal operation. If in-circuit debug is not used in production, leave the pull-up but no series resistor. The RESET pin (pin 14) requires a 10 kohm pull-up and a 100 nF capacitor to ground for power-on reset; do not omit either. Avoid routing high-frequency switching signals (PWM, SCI) adjacent to PTA ADC inputs - cross-coupling degrades ADC accuracy.
The MC9S08GT16AMFBE has NO on-chip EEPROM - persistent settings must use Flash EEPROM emulation in a reserved 1 KB Flash sector. The 16 KB Flash endurance is typically 10k cycles per sector, so wear-level frequently-updated variables. Watchdog servicing must be enabled for safety-relevant applications (industrial control, security keypads); the default out-of-reset state has WDT disabled. The HCS08 background-debug pin must NOT be left floating during production - either tie to VDD via 10 kohm or implement an in-circuit debug header.
Compliance Information
RoHS and lead-free status per NXP product page; not AEC-Q100 qualified (industrial temperature only).
