My Inquiry
My Account
NXP Semiconductors MC705P6ACDWER
- Part No.:
- MC705P6ACDWER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MC705P6ACDWER.pdf
- Description:
- IC MCU 8BIT 4.5KB OTP 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,014
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC705P6ACDWER from NXP (formerly Freescale) is an 8-bit EPROM-based microcontroller in the M68HC05 family, featuring a 16-bit timer with input capture/output compare, 4-channel 8-bit ADC, SIOP serial interface, COP watchdog, 4672 bytes of user EPROM, 176 bytes RAM, and 21 I/O pins (20 bidirectional + 1 input-only). It targets cost-sensitive embedded control in industrial sensors and appliance motor interfaces.
For engineers reviewing the MC705P6ACDWER datasheet, MC705P6ACDWER pinout, MC705P6ACDWER application, or MC705P6ACDWER equivalent, this page delivers verified functional identity, package mapping to SOIC-28, confirmed pin roles (e.g., PB5/SDO, PC6/AD0), core timing specs (fop = fosc/2), and two validated alternative microcontrollers for legacy 5V control designs.
Technical Context
The MC705P6ACDWER implements the M68HC05 CPU core with static logic, supporting STOP/HALT/WAIT low-power modes and bootloader ROM (239 bytes) for in-system programming. Its analog subsystem uses ratiometric A/D conversion referenced to VREFH with internal sampling control via ADSC register.
Timer operation includes independent input capture (PD7/TCAP) and output compare (TCMP) channels synchronized to the bus clock; SIOP supports LSB-first or MSB-first framing at programmable rates (OSC/8–64) under MOR configuration. COP reset is mask-option enabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M68HC05 8-bit CISC core with 176 bytes on-chip RAM and 4672 bytes user EPROM |
| ADC | 4-channel 8-bit ratiometric A/D converter with VREFH reference and 54 µs typical conversion time |
| Timer | 16-bit free-running timer with dedicated TCMP output compare and PD7/TCAP input capture pins |
| Serial Interface | SIOP synchronous serial port supporting LSB/MSB-first framing at OSC/8, /16, /32, or /64 clock rates |
| Power Modes | STOP, HALT, and WAIT modes with COP watchdog active in HALT/WAIT but disabled in STOP unless configured |
| Supply Voltage | 5.0 V ±10% DC operation; VDD and VSS pins require high-frequency bypassing for noise immunity |
| Package | 28-pin SOIC (Case 751F), RoHS-compliant, surface-mount compatible with 1.27 mm pitch |
Pinout & Package
MC705P6ACDWER is housed in a 28-pin Small Outline Integrated Circuit (SOIC) package per Case 751F mechanical specification, with 300 mil body width and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive power supply | Connect to regulated +5 V; requires local 0.1 µF ceramic bypass capacitor |
| VSS | Ground reference | System ground return; tie directly to PCB ground plane |
| OSC1 / OSC2 | On-chip oscillator inputs | Accept crystal (AT-cut, parallel resonant), ceramic resonator, or external CMOS clock signal |
| RESET | Active-low reset input | Pulled high internally; driven low externally to force hardware reset and initialize CPU registers |
| IRQ/VPP | Maskable interrupt request / EPROM programming voltage | Edge- or edge-and-level-sensitive interrupt source; supplies VPP during EPROM programming |
| PA0–PA7 | Port A bidirectional I/O | Configurable as general-purpose I/O; PA0–PA7 support programmable keyscan pullups/interrupts |
| PB5/SDO, PB6/SDI, PB7/SCK | SIOP serial data I/O and clock | SDO outputs serial data; SDI inputs serial data; SCK provides synchronous clock from MCU |
| PC0–PC2, PC3/AD3, PC4/AD2, PC5/AD1, PC6/AD0, PC7/VREFH | Analog/digital multiplexed port | PC3–PC6 serve as A/D input channels; PC7 is analog reference high voltage input |
| PD5 | Port D general-purpose input | Dedicated input-only pin; not software-configurable as output |
| PD7/TCAP | Input capture timer trigger | Edge-triggered input for timestamping external events into 16-bit timer register |
| TCMP | Output compare timer output | Drives external load on match event; used for PWM generation or precise timing pulses |
Key Features
| Feature | Design Value |
|---|---|
| EPROM Security Lockout | MOR-configurable external lockout prevents unauthorized readout of user code stored in EPROM |
| Programmable SIOP Clock Rate | Selectable OSC/8, /16, /32, or /64 via Mask Option Register for flexible baud rate generation |
| High-Current Outputs | PC0 and PC1 support higher sink/source current than standard I/O for direct LED or relay drive |
| COP Watchdog Configurability | Enable/disable COP reset function through MOR bit to balance safety vs. debug flexibility |
| Bootloader ROM | 239-byte factory-programmed ROM enables field firmware updates without external programmer |
Applications
| Industrial Sensor Node | Home Appliance Motor Control |
|---|---|
Use Scenario: Standalone temperature/humidity sensor with local display and serial telemetry. IC Role / Device Role / Timing Role: MC705P6ACDWER acts as system controller, acquiring analog sensor data via 4-channel ADC and transmitting results over SIOP to host MCU. Use Value: Integrated ADC and SIOP eliminate external converters and UART ICs, reducing BOM count and PCB area in space-constrained enclosures. |
Use Scenario: Washing machine drum motor speed regulation using zero-cross detection and triac firing control. IC Role / Device Role / Timing Role: MC705P6ACDWER monitors AC line zero-cross via IRQ input and triggers TCMP output to precisely phase-control triac gate timing. Use Value: Input capture (PD7/TCAP) timestamps zero-cross events; output compare (TCMP) delivers sub-millisecond timing resolution for consistent motor torque. |
| Legacy Industrial Panel Meter | Small-Batch HVAC Controller |
Use Scenario: Retrofit analog panel meter with digital display, pushbutton calibration, and RS-485 interface. IC Role / Device Role / Timing Role: MC705P6ACDWER reads analog process signals (4–20 mA loop via resistor), drives 7-segment display, and communicates via SIOP-to-RS485 transceiver. Use Value: On-chip 5V-tolerant I/O and 4672-byte EPROM allow full firmware storage without external memory, simplifying redesign of aging analog meters. |
Use Scenario: Compact duct-mounted thermostat with temperature sensing, fan staging, and compressor enable logic. IC Role / Device Role / Timing Role: MC705P6ACDWER executes closed-loop PID-like logic using ADC inputs and controls relays/fans via PA0–PA7 with programmable keyscan for front-panel buttons. Use Value: Keyscan interrupt capability on Port A reduces polling overhead and enables responsive button handling without dedicated GPIO expanders. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC68HC705P6ACDW | Same die, identical functionality, but packaged in PDIP-28 instead of SOIC-28 | Through-hole assembly required; no reflow compatibility; larger board footprint | Select when legacy through-hole manufacturing or prototyping with breadboards is needed |
| MC68HC705P6AMDW | Same core and peripherals, but rated for extended temperature range (–40°C to +125°C) | Suitable for under-hood automotive or high-ambient industrial environments where standard –40°C to +85°C rating is insufficient | Choose for deployments exceeding 85°C ambient or requiring AEC-Q100 alignment |
Compared with MC705P6ACDWER, MC68HC705P6ACDW offers identical electrical behavior in a through-hole package for manual assembly, while MC68HC705P6AMDW extends thermal reliability for harsh environments-neither is pin-compatible with modern 3.3V MCUs, preserving design continuity in legacy 5V systems.
Availability
MC705P6ACDWER is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance motor interfaces, and legacy panel meter retrofits requiring stable component supply across long-lifecycle production programs.
Supply support for MC705P6ACDWER includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with roots in Freescale's embedded controller heritage.
The MC705P6ACDWER belongs to the M68HC05 microcontroller family, designed specifically for cost-sensitive, low-pin-count 5V embedded control applications where EPROM programmability, integrated analog, and deterministic real-time response are essential.
FAQ
What is the maximum operating frequency of the MC705P6ACDWER?
The MC705P6ACDWER operates with an external crystal, ceramic resonator, or clock source up to 4 MHz. Its internal bus clock runs at fosc/2, so a 4 MHz oscillator yields a 2 MHz CPU clock. This frequency is specified in the Electrical Characteristics chapter of the Rev. 2.1 datasheet and validated for reliable operation across the –40°C to +85°C temperature range. The MC705P6ACDWER does not support frequencies beyond 4 MHz.
Does the MC705P6ACDWER support in-circuit programming after soldering?
Yes, the MC705P6ACDWER supports in-system programming via its bootloader ROM and IRQ/VPP pin. When placed in bootloader mode, it accepts new EPROM code through the SIOP interface using an external host. This eliminates the need for UV erasers or socketed programming, enabling field firmware updates. The MC705P6ACDWER bootloader occupies 239 bytes and is factory-masked.
How many analog input channels does the MC705P6ACDWER have, and what is their resolution?
The MC705P6ACDWER integrates a 4-channel 8-bit analog-to-digital converter. Channels map to PC3/AD3, PC4/AD2, PC5/AD1, and PC6/AD0. Conversion is ratiometric relative to VREFH, with typical accuracy of ±2 LSB and conversion time of 54 µs. These specifications are confirmed in Chapter 9 and Table 14-7 of the Advance Information Data Sheet.
Can the MC705P6ACDWER operate in low-power modes, and which peripherals remain active?
Yes, the MC705P6ACDWER supports STOP, HALT, and WAIT modes. In HALT and WAIT, the COP watchdog remains active and the 16-bit timer continues counting; in STOP mode, only RESET and IRQ can wake the device, and the timer halts. Power consumption drops to <10 µA in STOP mode. These behaviors are defined in Chapter 3 and verified in Section 14.5 of the datasheet.
Is the MC705P6ACDWER pin-compatible with other M68HC05 family members?
No, the MC705P6ACDWER is not universally pin-compatible across the M68HC05 family. While it shares the 28-pin SOIC footprint with variants like MC68HC705P6ACDW, pin functions differ significantly from non-P6 devices (e.g., P3, P9). Port mappings, timer pin assignments (TCMP, TCAP), and SIOP pin locations (PB5–PB7) are specific to the P6A derivative. Always verify against the Functional Pin Description section of the MC705P6ACDWER datasheet.
MC705P6ACDWER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Series:
- HC05
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- HC05
- Core Size:
- 8-Bit
- Speed:
- 2.1MHz
- Connectivity:
- SIO
- Peripherals:
- POR, WDT
- Number of I/O:
- 21
- Program Memory Size:
- 4.5KB (4.5K x 8)
- Program Memory Type:
- OTP
- EEPROM Size:
- -
- RAM Size:
- 176 x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.5V
- Data Converters:
- A/D 4x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC705P6ACDWER FAQ
1.How can I place an order for MC705P6ACDWER through Aetrix?
Please submit a Request for Quotation (RFQ) for MC705P6ACDWER on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC705P6ACDWER reliable?
The price and inventory of MC705P6ACDWER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC705P6ACDWER is usually 5 days.
3.What payment methods are accepted for MC705P6ACDWER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC705P6ACDWER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC705P6ACDWER?
MC705P6ACDWER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC705P6ACDWER order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC705P6ACDWER?
For technical support, including MC705P6ACDWER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC705P6ACDWER requirements.
6.How does Aetrix verify that MC705P6ACDWER is sourced from the original manufacturer or authorized distributors?
All MC705P6ACDWER products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC705P6ACDWER meets industry standards.
7.What is the process for return or replacement of MC705P6ACDWER?
All MC705P6ACDWER units undergo pre-shipment inspection (PSI). If there is an issue with MC705P6ACDWER, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC705P6ACDWER part is unused and in its original packaging.
Return procedure for MC705P6ACDWER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC705P6ACDWER Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
