Z86C9116PSG - 16MHz 8-Bit ROMless MCU | Zilog
Référence : Z86C9116PSG ✓ ActifZ86C9116PSG Présentation
An 8-bit ROMless microcontroller is a compact embedded-control processor designed for systems that require deterministic I/O handling rather than application storage inside the MCU. In the product hierarchy, the Z86C9116PSG is a microcontroller, an embedded processor, and a semiconductor integrated circuit. Its ROMless architecture separates program memory from the controller, allowing designers to select external storage according to firmware size and interface requirements.
The headline features include a 16 MHz operating clock, an 8-bit data bus, 236 bytes of on-chip RAM, and 32 I/O ports. The 4.5 V to 5.5 V supply range supports conventional 5 V industrial embedded systems. Because the MCU is ROMless, an external program-memory device is required, while the 236 bytes of internal RAM provide limited working memory for variables, stack operations, and control-state management.
The Z86C9116PSG uses the Z8 architecture and is positioned as a compact, low-cost controller for embedded products requiring parallel digital I/O. Its 40-pin PDIP package provides a comparatively large number of external connections compared with smaller surface-mount MCUs, making it practical for prototyping, through-hole industrial assemblies, and applications that need direct access to peripheral pins.
Typical uses include appliance controllers, industrial sequencers, keyboard or panel interfaces, lighting-control modules, instrumentation, and small embedded automation systems. The 32 I/O ports are particularly useful when a design must connect multiple switches, indicators, sensors, or actuators without relying on additional interface expanders.
When designing around this device, engineers must account for the absence of internal program memory and provide a suitable external memory implementation. The available verified data does not specify the external-memory interface, exact pin assignments, peripheral mix, or detailed timing characteristics, so those items should be confirmed in the manufacturer datasheet before schematic capture.
This product page consolidates distributor availability, verified pricing, device hierarchy, package information, and same-brand replacement analysis. It also distinguishes directly documented drop-in candidates from alternatives that cannot be verified as pin-to-pin compatible, helping engineers avoid replacing an MCU solely because the clock speed and package description look similar.
Alternatives de remplacement direct pour Z86C9116PSG — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Z86C9116PEC
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
Z86C9116PEG
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
Z86C9116PSG Valeurs maximales et caractéristiques électriques
| Microcontroller Type | 8-bit ROMless Z8 microcontroller |
| Clock Speed | 16 MHz |
| Largeur du bus de données | 8 bit |
| Supply Voltage Range | 4.5 V to 5.5 V |
| On-Chip RAM | 236 byte |
| I/O Port Count | 32 |
| Program Memory | 0 byte internal ROM |
| Package Type | PDIP-40 |
| Package Pin Count | 40 pin |
| Style de montage | Through-hole |
| Operating Range | Industrial |
| Lifecycle Stage | Active |
| Clock Period at 16 MHz | 62.5 ns |
| Architecture | Z8 8-bit embedded architecture |
| Product Family | Z86C91 |
Guide de configuration des broches du Z86C9116PSG 40 pin
Configuration des broches du Z86C9116PSG (boîtier 40 pin). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour Z86C9116PSG.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
Z86C9116PSG convient pour 6 applications: Industrial Sequencer Controller, Appliance Control Module, Lighting and Panel Interface, Small Instrument Controller, Automation Relay Interface, Embedded Control Education Platform.
Industrial Sequencer Controller
The Z86C9116PSG fits small industrial sequencing modules because its 16 MHz Z8 core provides deterministic 8-bit control while 32 I/O ports can operate discrete inputs and outputs. The 4.5 V to 5.5 V supply range aligns with conventional 5 V control logic. Because the MCU is ROMless, the implementation must include external program memory and should use the exact memory interface shown in the manufacturer datasheet. Through-hole DIP construction also simplifies serviceable industrial controller assemblies.
Recommandé
Appliance Control Module
The Z86C9116PSG is appropriate for appliance controllers that combine discrete switch inputs, indicator outputs, and a compact state machine. Its 32 I/O ports reduce the need for external logic in modest designs, while 236 bytes of RAM support local variables and stack activity. The 16 MHz operating rate supports timing-oriented control tasks. Firmware storage must be provided externally because the ROMless architecture includes no internal program memory.
Recommandé
Lighting and Panel Interface
The Z86C9116PSG can manage lighting panels, keypads, status indicators, and discrete user controls through its 32 I/O ports. The 8-bit architecture and 16 MHz clock are appropriate for straightforward scanning, debouncing, and state-machine control. A 5 V operating environment matches many panel-interface boards, although the exact operating-temperature range is not supplied. Firmware and external program memory should be validated together during schematic design.
Recommandé
Small Instrument Controller
The Z86C9116PSG is suitable for compact instrumentation that uses parallel digital control signals, local indicators, and simple sensor-conditioning interfaces. Its 16 MHz Z8 operation supplies useful timing headroom for measurement sequencing, while 32 I/O ports support multiple discrete controls. Designers must ensure that external memory timing, reset behavior, and I/O electrical limits satisfy the instrument requirement, using the manufacturer datasheet for details absent from the verified excerpts.
Recommandé
Automation Relay Interface
The Z86C9116PSG can serve as the low-level controller for an automation interface that combines input sensors, relay outputs, and status LEDs. Its 32 I/O ports allow a modest number of channels to be handled without an I/O expander, and the 16 MHz clock supports event sequencing and debounce tasks. The DIP-40 package is practical for industrial through-hole boards. External program memory remains mandatory, and relay isolation must be implemented outside the MCU pins.
Recommandé
Embedded Control Education Platform
The Z86C9116PSG is useful in education and prototype boards because it combines a straightforward 8-bit architecture, 16 MHz operation, 32 I/O ports, and a through-hole 40-pin package. Students can connect switches, LEDs, displays, and external memory while learning embedded assembly and peripheral control. The DIP footprint is easy to probe and replace. Because no internal program ROM is present, the instructional platform should include a documented external-memory circuit and programming interface.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour Z86C9116PSG — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | Z86C9116PEC | Z86C9116PEG |
|---|---|---|---|
| Manufacturer | Zilog | Zilog | Zilog |
| Package | PDIP-40 | 40-pin DIP | 40-pin DIP |
| Architecture | Z8 8-bit ROMless | Z8 8-bit ROMless | Z8 8-bit ROMless |
| Clock Speed | 16 MHz | 16 MHz | 16 MHz |
| Program Memory | External memory required | External memory required | External memory required |
Principaux différenciateurs
- Documented 32-port I/O allocation (vs Z86C9116PEG)
- Complete replacement characterization in the supplied cross-reference data (vs Z86C9116PEG)
- Verified 16 MHz ROMless Z8 architecture (vs Z86C9116PEC)
Notes de conception
The verified supply range is 4.5 V to 5.5 V, so the design must maintain that range during startup, transient response, and normal operation. Place the required supply decoupling at the device power pins and keep return-current paths short. The verified excerpts do not identify the exact decoupling value, pin names, or supply-current limits, so obtain those values from the manufacturer datasheet before finalizing the power network.
Route the external program-memory bus as a short, controlled set of traces on a through-hole board, and follow the manufacturer's guidance for clock, reset, and unused-pin treatment. The supplied data confirms a 40-pin DIP package but does not provide the individual pin map; do not infer external-memory or control signals from the MCU family name. Confirm every connection against the manufacturer schematic before layout release.
Do not treat a package-compatible Zilog order code as automatically interchangeable. Although Z86C9116PEC is described as a complete replacement and Z86C9116PEG as similar, verify memory timing, electrical limits, package construction, and operating-temperature requirements. Also account for the ROMless architecture by budgeting an external program-memory device and its address, data, and control connections in the PCB and BOM.
If the board connects relay coils, lamps, motors, or other inductive loads, use separate driver stages rather than driving them directly from MCU I/O. Add flyback protection and preserve separation between the 5 V logic rail and switching paths. The 32 I/O ports simplify low-current digital control, but the verified data does not establish individual pin drive-current ratings, so consult the manufacturer limits for every load.
Informations de conformité
The supplied verified data identifies an industrial operating range and active lifecycle status but does not provide RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification evidence. AEC-Q100 is marked not applicable because no automotive qualification claim was supplied.
