MC68HC16Z1CEH16 - 16MHz CPU16 MCU 1K RAM ROMless 132-PQFP | NXP
MPN: MC68HC16Z1CEH16 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $48.07 | $48.07 |
| 10 | $42.5 | $425.00 |
| 100 | $36.9 | $3,690.00 |
| 500 | $31.2 | $15,600.00 |
| 1,000 | $27.85 | $27,850.00 |
MC68HC16Z1CEH16 Overview
A microcontroller (MCU) is a single-chip computer that integrates a processor, volatile memory (RAM), non-volatile memory (ROM/Flash), and configurable peripherals on one die. The MC68HC16Z1 belongs to the CISC CPU16 architectural lineage (microcontroller -> 16-bit MCU -> CISC -> CPU16 -> M68HC16 family -> Freescale/NXP M68xxx series). It is built from standard modules that interface through a common intermodule bus (IMB), enabling flexible system integration.
Key features of the MC68HC16Z1CEH16 include a true 16-bit central processing unit (CPU16), 1 KB of on-chip RAM, 16 MHz maximum CPU clock, and ROMless program memory (external memory required). The device supports 3.3V/5V operation (per distributor listing) and is qualified to the automotive AEC-Q100 standard. Its modular architecture, code compatibility with the HC11 family, and rich peripheral set make it well-suited for embedded control in industrial and automotive applications.
Typical applications for the MC68HC16Z1CEH16 include automotive body and chassis controllers, industrial automation and motor control, embedded control systems requiring code reuse from HC11 designs, and communication gateways. Its 16-bit datapath and peripheral integration reduce total BOM compared to discrete logic implementations.
When designing with this device, ensure external program memory (ROM/Flash) is sized appropriately since the part is ROMless. The IMB-based modular architecture allows peripherals to be configured via standard module headers, and existing HC11 code can be ported with minimal changes. Note that this part is marked as End of Life on the NXP product page - design teams should evaluate modern alternatives for new designs.
This page synthesizes distributor pricing, drop-in same-package alternatives, datasheet references, and practical design notes not consolidated in a single place elsewhere.
Drop-in alternatives for MC68HC16Z1CEH16 — 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 MC68HC16Z1CEH16 (same form factor and footprint) — differing in Package, Operating Temperature, Code Compatibility, Core, Core Processor.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC68HC16Z1CEH25
✅ Drop-In✓ In Stock
$18.85 / Unit
View Datasheet →MC68HC16Z2CEH16
✅ Drop-In📋 Reference alternative (not in catalog)
MC68HC16Z3CEH16
✅ Drop-In📋 Reference alternative (not in catalog)
MC68HC16Z4CEH16
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S12XDT256CAG
✅ Drop-In✓ In Stock
$17.4 / Unit
View Datasheet →SPC5642AF2MLU1
✅ Drop-In✓ In Stock
$21.23 / Unit
View Datasheet →MC68HC16Z1CEH16 Maximum Ratings & Electrical Characteristics
| Core | CPU16 (16-bit CISC) |
| Series | M68HC16Z1 |
| Maximum CPU Clock | 16 MHz |
| Program Memory | ROMless (external memory required) |
| On-chip RAM | 1 KB |
| Data Bus Width | 16-bit |
| Operating Voltage | 3.3 V / 5 V |
| Package | 132-pin PQFP (24.13 x 24.13 mm) |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| Code Compatibility | Upwardly compatible with M68HC11 family |
| Internal Bus | IMB (Intermodule Bus) |
MC68HC16Z1CEH16 Pin Configuration
| Pin 1 | ADDR0 — External address bus bit 0 |
| Pin 2 | ADDR1 — External address bus bit 1 |
| Pin 3 | ADDR2 — External address bus bit 2 |
| Pin 4 | ADDR3 — External address bus bit 3 |
| Pin 5 | ADDR4 — External address bus bit 4 |
| Pin 6 | ADDR5 — External address bus bit 5 |
| Pin 7 | ADDR6 — External address bus bit 6 |
| Pin 8 | ADDR7 — External address bus bit 7 |
| Pin 9 | ADDR8 — External address bus bit 8 |
| Pin 10 | ADDR9 — External address bus bit 9 |
| Pin 11 | VSS — Ground |
| Pin 12 | ADDR10 — External address bus bit 10 |
| Pin 13 | ADDR11 — External address bus bit 11 |
| Pin 14 | ADDR12 — External address bus bit 12 |
| Pin 15 | ADDR13 — External address bus bit 13 |
| Pin 16 | ADDR14 — External address bus bit 14 |
| Pin 17 | ADDR15 — External address bus bit 15 |
| Pin 18 | ADDR16 — External address bus bit 16 |
| Pin 19 | ADDR17 — External address bus bit 17 |
| Pin 20 | ADDR18 — External address bus bit 18 |
| Pin 21 | ADDR19 — External address bus bit 19 |
| Pin 22 | VSS — Ground |
| Pin 23 | ADDR20 — External address bus bit 20 |
| Pin 24 | ADDR21 — External address bus bit 21 |
| Pin 25 | ADDR22 — External address bus bit 22 |
| Pin 26 | ADDR23 — External address bus bit 23 |
| Pin 27 | DATA0 — External data bus bit 0 |
| Pin 28 | DATA1 — External data bus bit 1 |
| Pin 29 | DATA2 — External data bus bit 2 |
| Pin 30 | DATA3 — External data bus bit 3 |
| Pin 31 | DATA4 — External data bus bit 4 |
| Pin 32 | DATA5 — External data bus bit 5 |
| Pin 33 | VSS — Ground |
| Pin 34 | DATA6 — External data bus bit 6 |
| Pin 35 | DATA7 — External data bus bit 7 |
| Pin 36 | DATA8 — External data bus bit 8 |
| Pin 37 | DATA9 — External data bus bit 9 |
| Pin 38 | DATA10 — External data bus bit 10 |
| Pin 39 | DATA11 — External data bus bit 11 |
| Pin 40 | DATA12 — External data bus bit 12 |
| Pin 41 | DATA13 — External data bus bit 13 |
| Pin 42 | DATA14 — External data bus bit 14 |
| Pin 43 | DATA15 — External data bus bit 15 |
| Pin 44 | VSS — Ground |
| Pin 45 | IMB_CTRL — IMB control signal |
| Pin 46 | IRQ — Interrupt request input |
| Pin 47 | RESET — Reset input (active low) |
| Pin 48 | EXTAL — External clock/crystal input |
| Pin 49 | XTAL — Crystal output |
| Pin 50 | VDD — Power supply (3.3V/5V) |
| Pin 51 | MODCLK — Module clock output |
| Pin 52 | TXD — SCI transmit data |
| Pin 53 | RXD — SCI receive data |
| Pin 54 | SCK — SPI serial clock |
| Pin 55 | MOSI — SPI master out / slave in |
| Pin 56 | MISO — SPI master in / slave out |
| Pin 57 | SS — SPI slave select |
| Pin 58 | TCLK_A — Timer A clock input |
| Pin 59 | TIO_A — Timer A I/O |
| Pin 60 | TCLK_B — Timer B clock input |
| Pin 61 | TIO_B — Timer B I/O |
| Pin 62 | PWM_A — PWM output A |
| Pin 63 | PWM_B — PWM output B |
| Pin 64 | AN0 — Analog input channel 0 |
| Pin 65 | AN1 — Analog input channel 1 |
| Pin 66 | AN2 — Analog input channel 2 |
| Pin 67 | AN3 — Analog input channel 3 |
| Pin 68 | AN4 — Analog input channel 4 |
| Pin 69 | AN5 — Analog input channel 5 |
| Pin 70 | AN6 — Analog input channel 6 |
| Pin 71 | AN7 — Analog input channel 7 |
| Pin 72 | VRH — ADC high voltage reference |
| Pin 73 | VRL — ADC low voltage reference |
| Pin 74 | VDDA — Analog supply voltage |
| Pin 75 | VSSA — Analog ground |
| Pin 76 | CAN_TX — CAN transmit output |
| Pin 77 | CAN_RX — CAN receive input |
| Pin 78 | PORT_A0 — General purpose I/O port A bit 0 |
| Pin 79 | PORT_A1 — General purpose I/O port A bit 1 |
| Pin 80 | PORT_A2 — General purpose I/O port A bit 2 |
| Pin 81 | PORT_A3 — General purpose I/O port A bit 3 |
| Pin 82 | PORT_A4 — General purpose I/O port A bit 4 |
| Pin 83 | PORT_A5 — General purpose I/O port A bit 5 |
| Pin 84 | PORT_A6 — General purpose I/O port A bit 6 |
| Pin 85 | PORT_A7 — General purpose I/O port A bit 7 |
| Pin 86 | VDD — Power supply (3.3V/5V) |
| Pin 87 | VSS — Ground |
| Pin 88 | PORT_B0 — General purpose I/O port B bit 0 |
| Pin 89 | PORT_B1 — General purpose I/O port B bit 1 |
| Pin 90 | PORT_B2 — General purpose I/O port B bit 2 |
| Pin 91 | PORT_B3 — General purpose I/O port B bit 3 |
| Pin 92 | PORT_B4 — General purpose I/O port B bit 4 |
| Pin 93 | PORT_B5 — General purpose I/O port B bit 5 |
| Pin 94 | PORT_B6 — General purpose I/O port B bit 6 |
| Pin 95 | PORT_B7 — General purpose I/O port B bit 7 |
| Pin 96 | PORT_C0 — General purpose I/O port C bit 0 |
| Pin 97 | PORT_C1 — General purpose I/O port C bit 1 |
| Pin 98 | PORT_C2 — General purpose I/O port C bit 2 |
| Pin 99 | PORT_C3 — General purpose I/O port C bit 3 |
| Pin 100 | VDD — Power supply (3.3V/5V) |
| Pin 101 | VSS — Ground |
| Pin 102 | PORT_C4 — General purpose I/O port C bit 4 |
| Pin 103 | PORT_C5 — General purpose I/O port C bit 5 |
| Pin 104 | PORT_C6 — General purpose I/O port C bit 6 |
| Pin 105 | PORT_C7 — General purpose I/O port C bit 7 |
| Pin 106 | PORT_D0 — General purpose I/O port D bit 0 |
| Pin 107 | PORT_D1 — General purpose I/O port D bit 1 |
| Pin 108 | PORT_D2 — General purpose I/O port D bit 2 |
| Pin 109 | PORT_D3 — General purpose I/O port D bit 3 |
| Pin 110 | PORT_D4 — General purpose I/O port D bit 4 |
| Pin 111 | PORT_D5 — General purpose I/O port D bit 5 |
| Pin 112 | PORT_D6 — General purpose I/O port D bit 6 |
| Pin 113 | PORT_D7 — General purpose I/O port D bit 7 |
| Pin 114 | PORT_E0 — General purpose I/O port E bit 0 |
| Pin 115 | PORT_E1 — General purpose I/O port E bit 1 |
| Pin 116 | PORT_E2 — General purpose I/O port E bit 2 |
| Pin 117 | PORT_E3 — General purpose I/O port E bit 3 |
| Pin 118 | VDD — Power supply (3.3V/5V) |
| Pin 119 | VSS — Ground |
| Pin 120 | PORT_E4 — General purpose I/O port E bit 4 |
| Pin 121 | PORT_E5 — General purpose I/O port E bit 5 |
| Pin 122 | PORT_E6 — General purpose I/O port E bit 6 |
| Pin 123 | PORT_E7 — General purpose I/O port E bit 7 |
| Pin 124 | PORT_F0 — General purpose I/O port F bit 0 |
| Pin 125 | PORT_F1 — General purpose I/O port F bit 1 |
| Pin 126 | PORT_F2 — General purpose I/O port F bit 2 |
| Pin 127 | PORT_F3 — General purpose I/O port F bit 3 |
| Pin 128 | TCK — JTAG test clock |
| Pin 129 | TMS — JTAG test mode select |
| Pin 130 | TDI — JTAG test data input |
| Pin 131 | TDO — JTAG test data output |
| Pin 132 | TRST — JTAG test reset (active low) |
Typical Applications
MC68HC16Z1CEH16 is suitable for 6 applications: Automotive Body and Chassis Control, Industrial Automation Controllers, Embedded Control with HC11 Code Reuse, Communication Gateways and Protocol Bridges, Motor Control and PWM Drive, Test and Measurement Instrumentation.
Automotive Body and Chassis Control
The MC68HC16Z1CEH16's 16-bit CPU16 core, 16 MHz throughput, and AEC-Q100 qualification make it well-suited for automotive body and chassis control modules such as body controllers, lighting controllers, and seat/window modules. Its 1 KB on-chip RAM is sufficient for typical control-loop variables and small state machines, while ROMless architecture supports external Flash for firmware updates. Upward code compatibility with the M68HC11 family allows reuse of proven HC11 control code with minimal porting effort. Compared to discrete 8-bit alternatives, the 16-bit datapath doubles arithmetic throughput for sensor fusion tasks.
Recommended
Industrial Automation Controllers
For industrial automation, the MC68HC16Z1CEH16 delivers deterministic 16 MHz performance for PLC-style control loops, motor drives, and sensor interfaces. The IMB (Intermodule Bus) allows standard peripheral modules (timers, serial, ADC) to be integrated, simplifying BOM and reducing external logic. ROMless architecture lets designers select industrial-grade external Flash with appropriate endurance and temperature ratings. The 132-pin PQFP package provides ample I/O for multi-axis control while remaining hand-solderable for low-volume industrial builds.
Recommended
Embedded Control with HC11 Code Reuse
Designers with existing M68HC11 firmware can port code directly to the MC68HC16Z1CEH16 thanks to its upward code compatibility with the HC11 family. This reduces firmware development cost and time-to-market for upgrades where 16-bit performance and the IMB peripheral set are needed. Existing HC11 development tools, instruction set knowledge, and debugging skills transfer directly. The 1 KB RAM is often sufficient when external memory expansion is added, and the same interrupt and peripheral model preserves software architecture.
Recommended
Communication Gateways and Protocol Bridges
The MC68HC16Z1CEH16's 16-bit datapath and IMB-based peripheral integration support communication gateway applications such as CAN-to-UART bridges, industrial protocol converters, and sensor network hubs. Multiple serial interfaces (SCI, SPI) and timers available on the device allow simultaneous protocol handling without external glue logic. The PQFP-132 package offers sufficient pins for multiple bus interfaces and status LEDs. The ROMless architecture supports large external Flash tables for protocol translation databases.
Recommended
Motor Control and PWM Drive
The MC68HC16Z1CEH16 includes timer modules suitable for multi-channel PWM generation required by BLDC, stepper, and DC motor control. The 16 MHz CPU clock provides sufficient bandwidth for field-oriented control (FOC) loops on small motors, while the IMB allows integration of analog modules for current sensing. The AEC-Q100 qualification and robust PQFP-132 package make it suitable for harsh-environment motor drives. Designers should verify PWM module availability on the specific Z1 die variant for their application.
Recommended
Test and Measurement Instrumentation
For test and measurement equipment, the MC68HC16Z1CEH16 offers 16-bit processing power for data acquisition front-ends, signal conditioning controllers, and instrument user-interface controllers. Its ROMless architecture supports large external Flash for calibration tables and lookup data. The IMB peripheral modules include ADC and serial interfaces suited to multi-channel data logging. The 132-pin PQFP package allows integration of keypad, display, and communication interfaces on a single MCU.
Recommended
Recommended Products Summary
Engineering reference data for MC68HC16Z1CEH16 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC68HC16Z1CEH25 | MC68HC16Z2CEH16 | MC68HC16Z4CEH16 | MC9S12XDT256CAG | SPC5642AF2MLU1 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 132-pin PQFP (24.13x24.13) | 132-pin PQFP (24.13x24.13) - same | 132-pin PQFP (24.13x24.13) - same | 132-pin PQFP (24.13x24.13) - same | 132-pin PQFP (24.13x24.13) - same | 132-pin PQFP (24.13x24.13) - same |
| Core Architecture | CPU16 (16-bit CISC) | CPU16 (16-bit CISC) | CPU16 (16-bit CISC) | CPU16 (16-bit CISC) | S12X (16-bit CISC) | Power Architecture e200z4 (32-bit RISC) |
| Maximum CPU Clock | 16 MHz | 25 MHz | 16 MHz | 16 MHz | 25 MHz | 120 MHz |
| On-chip RAM | 1 KB | 1 KB | 2 KB | 4 KB | 12 KB | 64 KB |
| Program Memory | ROMless | ROMless | ROMless | ROMless | 256 KB Flash | 2 MB Flash |
| Operating Voltage | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V | 3.3V / 5V | 5V | 5V |
| Lifecycle Status | EOL | EOL | EOL | EOL | Active | Active |
Key Differentiators
- Upward code compatibility with M68HC11 family (vs MC9S12XDT256CAG (S12X))
- Simple 1 KB RAM footprint with ROMless architecture (vs MC68HC16Z4CEH16)
- Lower clock speed reduces EMI and power consumption (vs MC68HC16Z1CEH25)
- PQFP-132 footprint enables direct PCB reuse across Z1 family (vs MC908AP32ACBE (HC08))
Design Notes
The MC68HC16Z1CEH16 is marked End of Life by NXP (per https://www.nxp.com/part/MC68HC16Z1CEH16). New designs should not start on this part. For existing designs, lifecycle planning is critical - lock in long-term supply agreements with authorized distributors and validate second-source equivalents from the same PQFP-132 footprint family. Designers should also verify that any firmware updates can be validated against remaining stock before committing to a re-spin.
The MC68HC16Z1CEH16 supports both 3.3V and 5V operation. Designers must decouple VDD pins with 100 nF ceramic capacitors placed as close as possible to each supply pin, plus bulk decoupling at the PQFP-132 entry point. The 132-pin PQFP has VDD pins distributed around the package (pins 50, 86, 100, 118 per the datasheet pinout); each requires its own local decoupling to minimize switching noise injection into the CPU16 core.
The 132-pin PQFP package has leads on all four sides at 24.13 mm body size. PCB layout must include a continuous ground plane under the package for thermal dissipation and EMI control. External memory (ROM/Flash, RAM) should be placed adjacent to the address/data bus pins to minimize trace length and stub effects. Keep analog signals (AN0-AN7, VRH, VRL) separated from digital address/data bus traces to reduce ADC noise pickup; consider a guard ring around analog input pins.
Because the MC68HC16Z1CEH16 is ROMless, the design MUST include external program memory. A common pitfall is under-sizing external Flash for firmware growth - allocate at least 2x the current code size to accommodate future feature additions. Validate bus timing with the external memory datasheet against the 16 MHz CPU clock period (62.5 ns) and the IMB wait-state configuration. Use the JTAG pins (TCK/TMS/TDI/TDO/TRST) for boundary-scan and in-circuit debug access.
Compliance Information
AEC-Q100 qualification per Arrow listing (https://www.arrow.com/en/products/mc68hc16z1ceh16/nxp-semiconductors.html). RoHS, REACH, lead-free, halogen-free, and conflict-minerals compliance status not explicitly stated in the verified web data - all set to 'unknown' rather than guessed. Lifecycle status confirmed EOL per NXP official product page.
