MC9S08RD16PE 8-Bit 8MHz 16KB Flash MCU | NXP | DIP
MPN: MC9S08RD16PE ✗ End of LifeMC9S08RD16PE Overview
A microcontroller is a semiconductor device that integrates a processor core, memory, peripherals, and input/output functions on one integrated circuit. Within the product hierarchy, the MC9S08RD16PE is an embedded microcontroller, an 8-bit MCU, and a member of the S08 family of general-purpose semiconductor controllers. Its DIP construction supports prototyping, educational platforms, legacy industrial equipment, and systems assembled through conventional through-hole insertion.
The principal identified specifications are an 8-bit processing architecture, 8 MHz maximum clock frequency, and 16 KB organized as 16K by 8 bits of Flash memory. The 28-PDIP package has a 7.62 mm row pitch according to the product listing. These characteristics distinguish it from higher-pin-count S08 devices and make it appropriate for designs whose external interfaces and memory requirements fit a 28-pin controller.
The S08 architecture combines a modest central processing unit with embedded Flash and hardware peripherals for control-oriented designs. Flash memory retains programmed instructions when power is removed, eliminating the need for a separate program-memory device. Because the MC9S08RD16PE is specified for an 8 MHz clock, designers should use clock, timing, and peripheral constraints from the manufacturer datasheet when configuring bus activity, interrupts, timers, and communication interfaces.
Typical applications include motor and pump controllers, appliance control panels, simple instrumentation, keypad interfaces, LED status systems, and small industrial control boards. A through-hole DIP package is especially convenient when an existing control board must be assembled manually or maintained without a fine-pitch rework process. Firmware can also use the established S08 development tools and application notes associated with the family.
Design around the exact electrical limits in the manufacturer datasheet, including supply voltage, I/O limits, clock configuration, reset behavior, and programming connections. Place decoupling capacitors close to the supply pins, route the oscillator network according to the reference layout, and verify unused pins before production. The 28-pin footprint allows straightforward socket-based prototyping, but production assemblies should include adequate cleaning and soldering controls.
This product record combines the exact ordering information, core architecture, memory, clock, and package characteristics with practical guidance for replacement evaluation, PCB planning, and firmware integration. It also distinguishes the verified MC9S08RD16PE configuration from less specific cross-reference results and highlights where a component substitution must be checked against pinout, electrical ratings, and device revision details.
Drop-in alternatives for MC9S08RD16PE — 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 MC9S08RD16PE (same form factor and footprint) — differing in Manufacturer, Package, Product Type, Mounting Type, Architecture.
MC9S08RD16CDWE
✅ Drop-In ⚠️ Specs UnverifiedContact for price
View Datasheet →MC9S08RD16PE-FR
✅ Drop-InContact for price
View Datasheet →MC9S08RD16PE Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit S08 Microcontroller |
| Architecture | 8-bit |
| Maximum Clock Frequency | 8 MHz |
| Flash Program Memory | 16 KB (16K x 8 bits) |
| Package Type | 28-PDIP |
| Package Type | Plastic DIP |
| Lead Pitch | 7.62 mm |
| Mounting Type | Through-hole |
| Core Family | S08 |
| Number of Pins | 28 pins |
MC9S08RD16PE plastic dip Pin Configuration Guide
Pin configuration for MC9S08RD16PE (plastic dip 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 MC9S08RD16PE.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S08RD16PE is suitable for 6 applications: Small Motor and Pump Controllers, Appliance Control Panels, Legacy Industrial Instrumentation, Educational and Prototyping Systems, LED and Keypad Interface Boards, Standalone Sensor Interface Modules.
Small Motor and Pump Controllers
The MC9S08RD16PE fits compact motor and pump controller boards that require an 8-bit MCU with 16 KB of Flash and a straightforward 28-pin through-hole footprint. Its 8 MHz processing rate is suitable for state-machine control, timing, sensor polling, and actuator sequencing rather than sophisticated motion algorithms. The 28-PDIP package simplifies socket-based prototypes, repair boards, and low-volume assemblies. Before finalizing the design, confirm the required timer channels, PWM outputs, fault inputs, and pin assignments from the MC9S08RD16 manufacturer datasheet. Use that same table when arranging isolation, driver transistors, flyback protection, and connector wiring around the controller.
Recommended
Appliance Control Panels
The MC9S08RD16PE is appropriate for appliance control panels that combine button inputs, status LEDs, relays, and a small amount of nonvolatile program logic. Its 8-bit S08 architecture and 16 KB Flash provide ample space for deterministic firmware organization, while the 28-PDIP format supports through-hole assembly on cost-sensitive control boards. The 8 MHz clock supports ordinary debouncing, display updates, and sequencing tasks. Design the interface around the exact port pins listed in the manufacturer pin-description table, and check whether the selected indicator, latch, or driver components require levels or interfaces beyond the MCU's electrical ratings.
Recommended
Legacy Industrial Instrumentation
The MC9S08RD16PE is well suited to maintaining legacy industrial instrumentation where the original controller uses an 8-bit S08 processor, 8 MHz clock, and 28-pin DIP footprint. It can support sensor conditioning interfaces, threshold decisions, local status reporting, and service diagnostics without introducing a larger mixed-signal package. A direct replacement reduces connector and PCB rework, but engineers should verify supply limits, oscillator characteristics, reset behavior, and programming signals for the specific device revision. Preserve the original ground and bypass-capacitor layout where possible, and validate every I/O connection against the manufacturer pin table before energizing a restored instrument.
Recommended
Educational and Prototyping Systems
The MC9S08RD16PE provides an accessible platform for learning embedded C programming, interrupt handling, timers, port control, and Flash-resident firmware. Its 28-PDIP package can be mounted directly on a solderless breadboard, perfboard, or socket-based training board without exposing a fine-pitch package. The 8 MHz clock and 8-bit architecture keep instruction-set concepts visible, while 16 KB of Flash supports several realistic projects. Select this MCU for instruction when the course or design framework already targets the S08 family. Otherwise, compare its 28-pin footprint and legacy toolchain with the MCU platform used by the instructional material before purchasing components.
Recommended
LED and Keypad Interface Boards
The MC9S08RD16PE can implement keypad scanning, LED indication, menu navigation, and simple status reporting because its 8-bit architecture and 16 KB Flash suit compact embedded interfaces. The 28-PDIP footprint leaves clear access to port pins on a through-hole board, which simplifies prototype rewiring and fault diagnosis. Confirm the device's usable I/O count, port drive limits, and any shared peripheral pins before allocating the matrix or indicator outputs. Apply the manufacturer guidance for debounce timing and current limits, and include current-limiting resistors for LEDs so that the indicator load remains within the selected port's electrical limits.
Recommended
Standalone Sensor Interface Modules
The MC9S08RD16PE can serve as the controller in a compact sensor-interface module that converts switch, resistive, or simple digital sensor inputs into a higher-level status or control output. Its 8 MHz clock supports timed acquisition and basic filtering, and the 16 KB Flash allows self-contained calibration and diagnostic routines. The DIP package is useful for DIN-panel or legacy sensor-controller assemblies where socketed replaceability and a 7.62 mm row pitch are valuable. Verify the analog or digital interface requirements and whether the MCU's port topology can support the chosen sensor directly. External buffering, protection, or level translation may be needed for signals outside the device's specified limits.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08RD16PE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08RD16 | MC9S08RD16PE-FR |
|---|---|---|---|
| Package | 28-PDIP | 28-PDIP | 28-PDIP |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Architecture | 8-bit | 8-bit | 8-bit |
| Maximum Clock Frequency | 8 MHz | 8 MHz | 8 MHz |
| Flash Program Memory | 16 KB (16K x 8 bits) | 16 KB (16K x 8 bits) | 16 KB (16K x 8 bits) |
| Core Family | S08 | S08 | S08 |
| Mounting Type | Through-hole | Through-hole | Through-hole |
| Lead Pitch | 7.62 mm | 7.62 mm | 7.62 mm |
Key Differentiators
- Exact 16 KB Flash configuration (vs MC9S08RD16PE-FR)
- Established 28-pin DIP integration (vs MC9S08RD16)
- S08 software continuity (vs MC9S08RD16PE-FR)
Design Notes
Lay out the MC9S08RD16PE as a standard 28-pin through-hole device with a 7.62 mm row pitch, and maintain access to all pins for programming and diagnostics. Follow the manufacturer reference schematic and board layout for decoupling, oscillator routing, reset, and programming signals. If preserving an existing board, compare every physical DIP position with the manufacturer's pin-description table rather than assuming that pin numbering remains consistent across related order codes.
Calculate the supply network from the MCU's worst-case operating current, connected load current, tolerance of the selected regulator, and permitted supply range. Place the required bypass capacitors at the pins identified in the manufacturer reference design and keep supply traces short and adequately wide. For a socketed legacy board, include resistance from the socket and PCB tracks when evaluating voltage margin at the device pins.
Route oscillator and sensitive signal connections away from switching nodes, relay drivers, high-current loads, and long parallel runs. Keep the ground path consistent with the reference design and avoid splitting the ground plane unless the application requires a deliberate isolation strategy. Validate the reset network and programming interface for signal integrity when the board uses long leads, adapters, or separate programmer cables.
Do not approve a replacement solely because it is labeled a 28-pin DIP. Confirm pin names, power pins, ground pins, oscillator pins, reset behavior, I/O levels, programming signals, clock limits, Flash size, RAM, and peripheral assignments. Also distinguish the target ordering suffix from lead-form or delivery-form suffixes. Firmware should be tested with the alternate device populated because initialization code and interrupt-vector behavior remain board-specific.
Compliance Information
The product listing does not establish RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations for the exact ordering code. Obtain the current manufacturer or channel declaration of conformity before making a compliance claim.
