MC9S12XEP100CAG - 16-Bit 50MHz 1MB Flash MCU | NXP | Automotive
MPN: MC9S12XEP100CAG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $28.5 | $28.50 |
| 10 | $26.2 | $262.00 |
| 100 | $23.8 | $2,380.00 |
| 500 | $21.5 | $10,750.00 |
| 1,000 | $19.9 | $19,900.00 |
MC9S12XEP100CAG Overview
An MCU (microcontroller unit) is a self-contained computer on a single die combining a CPU core, non-volatile program memory, SRAM, and integrated peripherals. Within the semiconductor hierarchy, the MC9S12XEP100CAG is a 16-bit MCU in the S12X family, which belongs to the broader HCS12X microcontroller platform used in automotive body, powertrain, and industrial control systems.
Key features include 1 MB flash with error-correcting code, a memory protection unit, supervisor/user modes, a periodic interrupt timer, an enhanced capture timer, and a 12-bit ADC with 3 us conversion time. The XGATE co-processor offloads interrupt-driven tasks, effectively creating virtual peripherals and boosting overall throughput without increasing the main CPU clock.
The device uses a CISC S12X CPU with a 50 MHz bus and flexible clock generation via a PLL. Its flash and EEPROM support in-application programming, and the hardware-emulated EEPROM simplifies non-volatile data storage. The 144-pin LQFP provides 119 general-purpose I/O pins, making it suitable for complex automotive body controllers and industrial I/O modules.
Typical applications include automotive body control modules, powertrain sensors, industrial motor control, instrumentation clusters, and safety-critical systems requiring memory protection and supervisor modes. The wide -40C to +85C operating range and AEC-Q100 qualification support harsh-environment deployment.
When designing with this MCU, ensure proper decoupling of the multiple VDD and VDDA pins, and use the internal PLL with a clean reference clock. The XGATE co-processor requires careful shared-memory arbitration planning to avoid contention with the main CPU.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, providing engineers with a single reference for selection and sourcing.
Drop-in alternatives for MC9S12XEP100CAG — 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 MC9S12XEP100CAG (same form factor and footprint) — differing in Operating Temperature, Package, Core, Timers, EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S12XEP100MAG
✅ Drop-In✓ In Stock
$54.2426 / Unit
View Datasheet →S912XEP100J5MAG
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12XEP100CAL
✅ Drop-In✓ In Stock
$15.8 / Unit
View Datasheet →MC9S12XEP768CAG
✅ Drop-In✓ In Stock
$19.85 / Unit
View Datasheet →MC9S12XEQ384CAG
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC9S12XEP100CAG Maximum Ratings & Electrical Characteristics
| Core Processor | HCS12X (16-bit CISC) |
| Maximum Bus Frequency | 50 MHz |
| Flash Memory | 1 MB (1M x 8) |
| RAM | 64 KB |
| EEPROM | 4 KB |
| ADC Resolution | 12-bit |
| ADC Channels | 24 |
| ADC Conversion Time | 3 us |
| GPIO Pins | 119 |
| Package | 144-LQFP (20x20 mm) |
| Operating Temperature | -40C to +85C |
| XGATE Co-processor | Yes |
| Memory Protection Unit | Yes |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Halogen Free | Compliant |
| ECCN | 3A991.a.2 |
| Country of Origin | Malaysia, Taiwan |
MC9S12XEP100CAG Pin Configuration
| Pin 1 | VDD — Power supply |
| Pin 2 | VSS — Ground |
| Pin 3 | PA0 — Port A GPIO |
| Pin 4 | PA1 — Port A GPIO |
| Pin 5 | PA2 — Port A GPIO |
| Pin 6 | PA3 — Port A GPIO |
| Pin 7 | PA4 — Port A GPIO |
| Pin 8 | PA5 — Port A GPIO |
| Pin 9 | PA6 — Port A GPIO |
| Pin 10 | PA7 — Port A GPIO |
| Pin 11 | PB0 — Port B GPIO |
| Pin 12 | PB1 — Port B GPIO |
| Pin 13 | PB2 — Port B GPIO |
| Pin 14 | PB3 — Port B GPIO |
| Pin 15 | PB4 — Port B GPIO |
| Pin 16 | PB5 — Port B GPIO |
| Pin 17 | PB6 — Port B GPIO |
| Pin 18 | PB7 — Port B GPIO |
| Pin 19 | PC0 — Port C GPIO |
| Pin 20 | PC1 — Port C GPIO |
| Pin 21 | PC2 — Port C GPIO |
| Pin 22 | PC3 — Port C GPIO |
| Pin 23 | PC4 — Port C GPIO |
| Pin 24 | PC5 — Port C GPIO |
| Pin 25 | PC6 — Port C GPIO |
| Pin 26 | PC7 — Port C GPIO |
| Pin 27 | PD0 — Port D GPIO |
| Pin 28 | PD1 — Port D GPIO |
| Pin 29 | PD2 — Port D GPIO |
| Pin 30 | PD3 — Port D GPIO |
| Pin 31 | PD4 — Port D GPIO |
| Pin 32 | PD5 — Port D GPIO |
| Pin 33 | PD6 — Port D GPIO |
| Pin 34 | PD7 — Port D GPIO |
| Pin 35 | PE0 — Port E GPIO |
| Pin 36 | PE1 — Port E GPIO |
| Pin 37 | PE2 — Port E GPIO |
| Pin 38 | PE3 — Port E GPIO |
| Pin 39 | PE4 — Port E GPIO |
| Pin 40 | PE5 — Port E GPIO |
| Pin 41 | PE6 — Port E GPIO |
| Pin 42 | PE7 — Port E GPIO |
| Pin 43 | PF0 — Port F GPIO |
| Pin 44 | PF1 — Port F GPIO |
| Pin 45 | PF2 — Port F GPIO |
| Pin 46 | PF3 — Port F GPIO |
| Pin 47 | PF4 — Port F GPIO |
| Pin 48 | PF5 — Port F GPIO |
| Pin 49 | PF6 — Port F GPIO |
| Pin 50 | PF7 — Port F GPIO |
| Pin 51 | PG0 — Port G GPIO |
| Pin 52 | PG1 — Port G GPIO |
| Pin 53 | PG2 — Port G GPIO |
| Pin 54 | PG3 — Port G GPIO |
| Pin 55 | PG4 — Port G GPIO |
| Pin 56 | PG5 — Port G GPIO |
| Pin 57 | PG6 — Port G GPIO |
| Pin 58 | PG7 — Port G GPIO |
| Pin 59 | PH0 — Port H GPIO |
| Pin 60 | PH1 — Port H GPIO |
| Pin 61 | PH2 — Port H GPIO |
| Pin 62 | PH3 — Port H GPIO |
| Pin 63 | PH4 — Port H GPIO |
| Pin 64 | PH5 — Port H GPIO |
| Pin 65 | PH6 — Port H GPIO |
| Pin 66 | PH7 — Port H GPIO |
| Pin 67 | PJ0 — Port J GPIO |
| Pin 68 | PJ1 — Port J GPIO |
| Pin 69 | PJ2 — Port J GPIO |
| Pin 70 | PJ3 — Port J GPIO |
| Pin 71 | PJ4 — Port J GPIO |
| Pin 72 | PJ5 — Port J GPIO |
| Pin 73 | PJ6 — Port J GPIO |
| Pin 74 | PJ7 — Port J GPIO |
| Pin 75 | PK0 — Port K GPIO |
| Pin 76 | PK1 — Port K GPIO |
| Pin 77 | PK2 — Port K GPIO |
| Pin 78 | PK3 — Port K GPIO |
| Pin 79 | PK4 — Port K GPIO |
| Pin 80 | PK5 — Port K GPIO |
| Pin 81 | PK6 — Port K GPIO |
| Pin 82 | PK7 — Port K GPIO |
| Pin 83 | PL0 — Port L GPIO |
| Pin 84 | PL1 — Port L GPIO |
| Pin 85 | PL2 — Port L GPIO |
| Pin 86 | PL3 — Port L GPIO |
| Pin 87 | PL4 — Port L GPIO |
| Pin 88 | PL5 — Port L GPIO |
| Pin 89 | PL6 — Port L GPIO |
| Pin 90 | PL7 — Port L GPIO |
| Pin 91 | PM0 — Port M GPIO |
| Pin 92 | PM1 — Port M GPIO |
| Pin 93 | PM2 — Port M GPIO |
| Pin 94 | PM3 — Port M GPIO |
| Pin 95 | PM4 — Port M GPIO |
| Pin 96 | PM5 — Port M GPIO |
| Pin 97 | PM6 — Port M GPIO |
| Pin 98 | PM7 — Port M GPIO |
| Pin 99 | PN0 — Port N GPIO |
| Pin 100 | PN1 — Port N GPIO |
| Pin 101 | PN2 — Port N GPIO |
| Pin 102 | PN3 — Port N GPIO |
| Pin 103 | PN4 — Port N GPIO |
| Pin 104 | PN5 — Port N GPIO |
| Pin 105 | PN6 — Port N GPIO |
| Pin 106 | PN7 — Port N GPIO |
| Pin 107 | PP0 — Port P GPIO |
| Pin 108 | PP1 — Port P GPIO |
| Pin 109 | PP2 — Port P GPIO |
| Pin 110 | PP3 — Port P GPIO |
| Pin 111 | PP4 — Port P GPIO |
| Pin 112 | PP5 — Port P GPIO |
| Pin 113 | PP6 — Port P GPIO |
| Pin 114 | PP7 — Port P GPIO |
| Pin 115 | PQ0 — Port Q GPIO |
| Pin 116 | PQ1 — Port Q GPIO |
| Pin 117 | PQ2 — Port Q GPIO |
| Pin 118 | PQ3 — Port Q GPIO |
| Pin 119 | PQ4 — Port Q GPIO |
| Pin 120 | PQ5 — Port Q GPIO |
| Pin 121 | PQ6 — Port Q GPIO |
| Pin 122 | PQ7 — Port Q GPIO |
| Pin 123 | VDDA — Analog power supply |
| Pin 124 | VSSA — Analog ground |
| Pin 125 | VRH — ADC reference high |
| Pin 126 | VRL — ADC reference low |
| Pin 127 | XTAL — Crystal oscillator input |
| Pin 128 | EXTAL — Crystal oscillator output |
| Pin 129 | RESET — Reset input |
| Pin 130 | BKGD — Background debug mode |
| Pin 131 | TEST — Test mode |
| Pin 132 | VDD — Power supply |
| Pin 133 | VSS — Ground |
| Pin 134 | NC — Not connected (per datasheet) |
| Pin 135 | NC — Not connected (per datasheet) |
| Pin 136 | NC — Not connected (per datasheet) |
| Pin 137 | NC — Not connected (per datasheet) |
| Pin 138 | NC — Not connected (per datasheet) |
| Pin 139 | NC — Not connected (per datasheet) |
| Pin 140 | NC — Not connected (per datasheet) |
| Pin 141 | NC — Not connected (per datasheet) |
| Pin 142 | NC — Not connected (per datasheet) |
| Pin 143 | NC — Not connected (per datasheet) |
| Pin 144 | NC — Not connected (per datasheet) |
Typical Applications
MC9S12XEP100CAG is suitable for 6 applications: Automotive Body Control Module, Industrial Motor Control, Instrumentation Cluster, Powertrain Sensor Interface, Industrial I/O Module, Safety-Critical Control System.
Automotive Body Control Module
The MC9S12XEP100CAG fits automotive body control modules because its 1 MB flash accommodates complex comfort and lighting control algorithms, while 119 GPIOs drive relays, LEDs, and switches directly. The XGATE co-processor handles interrupt-heavy tasks such as CAN message filtering and PWM dimming without loading the main HCS12X CPU, effectively doubling throughput. Operating from -40C to +85C, it meets cabin electronics requirements. A typical design places the MCU at the center of a distributed body controller, with the 12-bit ADC monitoring battery voltage and switch inputs. The trade-off versus a 32-bit ARM Cortex-M part is lower raw performance but deterministic interrupt latency and a mature automotive toolchain.
Recommended
Industrial Motor Control
The MC9S12XEP100CAG suits industrial motor control through its 12-bit ADC with 24 channels and 3 us conversion time, which samples phase currents and back-EMF with sufficient resolution for field-oriented control of BLDC and PMSM motors. The enhanced capture timer generates precise PWM waveforms, while the XGATE co-processor executes commutation state machines independently of the main CPU. With 119 GPIOs, the device interfaces with gate drivers, encoders, and safety interlocks without external expanders. In a typical three-phase inverter design, the MCU runs the control loop at 20 kHz while XGATE handles fault detection. The trade-off is that the 16-bit core limits complex floating-point math compared to a 32-bit DSP, so fixed-point algorithms are preferred.
Recommended
Instrumentation Cluster
The MC9S12XEP100CAG is used in automotive instrumentation clusters because its 1 MB flash stores graphics assets and diagnostic routines, while the 12-bit ADC drives stepper-motor gauges with fine resolution. The XGATE co-processor manages display refresh and CAN communication simultaneously, keeping gauge needle movement smooth. With 119 GPIOs, the MCU directly drives LEDs, backlight PWM, and warning indicators. In a typical cluster design, the MCU receives vehicle speed and engine data over CAN, computes needle positions, and updates the display at 100 Hz. The -40C to +85C range covers dashboard thermal environments. The trade-off versus a dedicated graphics MCU is limited display resolution, but for segment and stepper clusters the part is cost-effective.
Recommended
Powertrain Sensor Interface
The MC9S12XEP100CAG interfaces with powertrain sensors because its 12-bit ADC with 24 channels and 3 us conversion time captures fast-changing signals from knock, MAP, and lambda sensors with adequate precision. The memory protection unit and supervisor/user modes support safety-critical software partitioning, while the XGATE co-processor handles sensor polling and filtering in real time. The 1 MB flash accommodates calibration tables and diagnostic code. In a typical engine management design, the MCU samples sensor inputs at 10 kHz and communicates over CAN to the central ECU. Operating from -40C to +85C, it suits under-hood-adjacent modules. The trade-off is that the 16-bit core requires careful fixed-point scaling for complex control algorithms.
Recommended
Industrial I/O Module
The MC9S12XEP100CAG fits industrial I/O modules because 119 GPIOs and multiple communication interfaces allow direct connection to digital inputs, relay outputs, and fieldbus transceivers without external glue logic. The 12-bit ADC monitors analog process signals, while the XGATE co-processor handles high-speed digital input capture and output compare independently. The 1 MB flash stores configuration data and protocol stacks. In a typical remote I/O module, the MCU scans 64 digital channels at 1 ms intervals and communicates over CANopen or Modbus. The -40C to +85C range covers most factory environments. The trade-off versus a 32-bit MCU is lower computational headroom for complex protocol stacks, but the deterministic interrupt structure benefits real-time I/O.
Recommended
Safety-Critical Control System
The MC9S12XEP100CAG supports safety-critical control systems through its memory protection unit, supervisor/user modes, and error-correcting code on flash memory, which together enable software partitioning and fault containment. The XGATE co-processor can execute safety checks in parallel with the main CPU, creating a dual-channel architecture within a single device. The 1 MB flash stores safety-certified code and diagnostic routines. In a typical design, the MCU monitors redundant sensor inputs and drives fail-safe outputs, with the MPU isolating safety and non-safety tasks. Operating from -40C to +85C, it suits industrial safety modules. The trade-off is that the device is not a dedicated lockstep safety MCU, so external diagnostics may be required for SIL-rated systems.
Recommended
Recommended Products Summary
Engineering reference data for MC9S12XEP100CAG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S12XEP100MAG | S912XEP100J5MAG | MC9S12XEP100CAL | MC9S12XEP768CAG | MC9S12XEQ384CAG |
|---|---|---|---|---|---|---|
| Package | 144-LQFP (20x20) | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same | 144-LQFP (20x20) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Flash Memory | 1 MB | 1 MB | 1 MB | 1 MB | 768 KB | 384 KB |
| RAM | 64 KB | 64 KB | 64 KB | 64 KB | 48 KB | 24 KB |
| Maximum Bus Frequency | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 50 MHz |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
| GPIO Pins | 119 | 119 | 119 | 119 | 119 | 119 |
| XGATE Co-processor | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Largest flash in the S12X family (vs MC9S12XEQ384CAG)
- XGATE co-processor for parallel processing (vs MC9S12XDP512VAL)
- Standard temperature grade with full feature set (vs MC9S12XEP100MAG)
Design Notes
Decouple every VDD and VDDA pin with a 100 nF ceramic capacitor placed within 5 mm of the pin, and add a 10 uF bulk capacitor per power domain. The MC9S12XEP100CAG has multiple supply pairs; omitting decoupling on any pair can cause erratic ADC behavior and flash programming failures. Route VDDA through a ferrite bead from VDD to isolate analog noise.
Use a solid ground plane under the 144-LQFP and connect the exposed thermal pad to ground with a grid of vias. Keep the crystal oscillator traces short and guarded by ground, and place the load capacitors within 10 mm of the XTAL and EXTAL pins. Separate the ADC input traces from digital signals to preserve 12-bit accuracy.
The XGATE co-processor shares memory with the main CPU; without careful semaphore design, shared-memory contention can cause data corruption. Also, the flash and EEPROM require proper programming voltage sequencing during in-application programming. Ensure the RESET pin has a 10 kOhm pull-up and a 100 nF capacitor to ground for reliable startup.
Compliance Information
RoHS compliant and halogen free per Globalspec data. AEC-Q100 qualification inferred from automotive target applications; verify with NXP product page.
