Z86E3016PSG - 8-Bit 16MHz OTP MCU | Zilog
MPN: Z86E3016PSG ✓ ActiveZ86E3016PSG Overview
A microcontroller is a programmable semiconductor that integrates a CPU, memory, I/O ports, timers, and support circuitry on one chip. The Z8 architecture belongs to the broader microcontroller and embedded-processor hierarchy. Compared with application-specific controllers, an OTP microcontroller offers a straightforward way to implement fixed control logic in appliances, security devices, HVAC equipment, and other compact electronic products.
Verified device features include one-time-programmable memory, enhanced wake-up circuitry, programmable watchdog timers, and selectable low-noise EMI options. The 16 MHz operating speed provides processing headroom for simple digital control, while 24 I/O lines allow the device to connect to sensors, switches, indicators, and actuators. Two 8-bit timers support periodic events, timing delays, and basic event generation without requiring additional timing components.
The 4 KB OTP program memory is organized as 4K by 8 bits, and the device includes 237 bytes of RAM for working data. OTP memory permits the final application firmware to be programmed once, making the controller well suited to production products whose control logic does not require field updates. This simplifies manufacturing compared with flash-programmable alternatives, but it also means a firmware revision generally requires a new programmed device rather than an in-system memory update.
Typical uses include appliance controls, security-system peripherals, temperature and process-control equipment, HVAC modules, and compact industrial controllers. The 24 available I/O pins simplify designs that need multiple digital inputs and outputs, while the watchdog timer helps recover operation after faults or unexpected program flow. Enhanced wake-up circuitry supports low-power systems that must respond to external activity without maintaining continuous high activity.
Designers should verify the exact package pinout, operating voltage, clock configuration, and programming procedure against the Zilog datasheet before layout. The provided search data confirms a 28-pin device but does not expose authoritative pin names or a complete manufacturer PDF URL, so those details remain marked as data needed rather than being inferred. Firmware and board design should also account for OTP programming limitations and the watchdog timeout behavior.
Drop-in alternatives for Z86E3016PSG — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
No drop-in alternatives available for this product.
Request AlternativesZ86E3016PSG Maximum Ratings & Electrical Characteristics
| Architecture | Z8 8-bit |
| Maximum Operating Frequency | 16 MHz |
| Program Memory Type | One-time programmable (OTP) |
| Program Memory Capacity | 4 KB (4K x 8 bits) |
| RAM Capacity | 237 bytes |
| I/O Pin Count | 24 |
| Timer Count | 2 |
| Timer Resolution | 8-bit |
| Wake-Up Circuitry | Enhanced |
| Watchdog Timer | Programmable |
| EMI Options | Low-noise options |
| Pin Count | 28 pins |
| RoHS Status | Compliant |
Z86E3016PSG standard Pin Configuration Guide
Pin configuration for Z86E3016PSG (standard package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for Z86E3016PSG.
Refer to the datasheet for full pin configuration.
Typical Applications
Z86E3016PSG is suitable for 6 applications: Appliance Control, HVAC Controller, Security and Access-Control Peripheral, Temperature and Process-Control Module, Industrial Input and Output Controller, Low-Power Event-Driven Controller.
Appliance Control
The Z86E3016PSG fits fixed-function appliance controls because its 4 KB OTP program memory can hold production control logic, while 24 I/O lines can connect switches, indicators, sensors, and actuators. Two 8-bit timers support periodic tasks and timing sequences without requiring separate timer ICs. The programmable watchdog helps recover from unexpected program flow, and enhanced wake-up circuitry is useful in systems that should remain responsive without continuous processing. The primary design trade-off is that OTP firmware cannot be updated in the field, so complete validation is required before programming each production unit.
Recommended
HVAC Controller
The Z86E3016PSG is appropriate for compact HVAC modules that coordinate digital inputs, relays, indicators, and timing functions. Its 24 I/O pins reduce the need for external I/O expanders in moderate-complexity systems, and its two 8-bit timers can divide low-rate control tasks such as fan cycling or actuator timing. OTP programming suits stable HVAC configurations, while the watchdog provides recovery from faults. Analog temperature sensing, communication, standby current, and operating-temperature requirements must be verified separately because they are not quantified in the supplied data.
Recommended
Security and Access-Control Peripheral
The Z86E3016PSG can serve as the fixed-function controller in a security peripheral that must evaluate digital inputs and drive outputs according to programmed logic. Its 4 KB OTP memory provides enough storage for compact state machines, 237 bytes of RAM support working variables, and the watchdog timer improves recovery after unexpected faults. Enhanced wake-up circuitry is valuable for event-driven access devices. OTP programming makes the final firmware tamper-resistant against casual field rewriting, although physical reverse engineering and environmental operating limits must be evaluated independently.
Recommended
Temperature and Process-Control Module
The Z86E3016PSG is a reasonable candidate for simple digital temperature or process-control modules where an external sensor interface produces digital data and the controller manages relays, displays, or other actuators. Its 16 MHz Z8 processing rate handles straightforward control logic, and the two timers can support sampling intervals and output timing. The programmable watchdog adds supervisory protection. The supplied data does not confirm analog-converter specifications, PWM resolution, operating voltage, or temperature limits, so these functions must be checked in the manufacturer datasheet before selection.
Recommended
Industrial Input and Output Controller
The Z86E3016PSG can serve as a compact industrial I/O controller when the product needs deterministic digital control rather than a high-performance processor. Its 24 I/O lines provide substantial connectivity, the two 8-bit timers support periodic jobs, and the watchdog timer helps maintain reliable operation after faults. The 16 MHz clock is appropriate for basic logic and supervisory tasks. Designers should confirm electrical tolerances, supply range, operating temperature, and any industrial qualification requirements because those specifications are not included in the verified search excerpts.
Recommended
Low-Power Event-Driven Controller
The Z86E3016PSG suits low-power event-driven products that periodically wake, inspect inputs, update outputs, and return to a low-energy state. Its enhanced wake-up circuitry is specifically identified in the indexed Zilog documentation, and the watchdog timer helps the system recover if a wake event leads to abnormal execution. The 4 KB OTP memory limits software complexity but enables compact fixed firmware, while 24 I/O pins support external sensors and indicators. Actual sleep current and wake-up timing are not present in the supplied data and require direct datasheet confirmation.
Recommended
Engineering reference data for Z86E3016PSG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Brand | Zilog |
| Architecture | Z8 8-bit |
| Maximum Frequency | 16 MHz |
| Program Memory | 4 KB OTP |
| RAM | 237 bytes |
| I/O Pins | 24 |
| Timers | Two 8-bit timers |
| Watchdog Timer | Programmable |
Key Differentiators
- One-time-programmable architecture for fixed production firmware (vs Generic flash-programmable 8-bit MCUs)
- Substantial I/O connectivity in a 28-pin device (vs Z86E3016PEC)
- Integrated supervisory and low-noise control features (vs Basic 8-bit controller without the same verified feature set)
Design Notes
Do not treat OTP as a flash-replacement path. The verified information identifies 4 KB of one-time-programmable memory, so firmware changes normally require a newly programmed device rather than an in-system update. Build production programming and test steps into the manufacturing process, and preserve the final firmware image and test limits because a recovered field unit cannot simply be rewritten.
Confirm the supply-voltage range, clock configuration, and sleep-current limits in the Zilog datasheet before committing a power architecture. The supplied excerpts confirm a 16 MHz maximum operating frequency and enhanced wake-up circuitry but do not quantify active current, standby current, or operating voltage. Those missing values directly affect regulator sizing, decoupling, and battery-life calculations.
Base the PCB footprint and every signal assignment on the official Z86E3016PSG package drawing rather than the 28-pin count alone. The verified material identifies a 28-pin device but does not establish the exact package type or terminal names. Verify programming-test access, oscillator connections, decoupling requirements, and exposed mechanical features during schematic and layout review.
The watchdog timer and enhanced wake-up behavior should be validated together with the application’s timeout and sleep-state strategy. Avoid enabling a watchdog timeout shorter than the longest legitimate initialization or control interval, and confirm how wake-up events are cleared. The indexed source confirms both functions but does not provide timeout ranges or detailed wake-up logic.
Compliance Information
RoHS compliance is explicitly reported by the verified Radwell product result. No verified statements were supplied for REACH, AEC-Q100, lead-free status, halogen-free status, or conflict-minerals compliance.
