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Asahi Kasei Microdevices/AKM AK6416CM
- Part No.:
- AK6416CM
- Manufacturer:
- Asahi Kasei Microdevices/AKM
- Category:
- Memory
- Package:
- 8-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AK6416CM.pdf
- Description:
- IC EEPROM 16KBIT SPI 5MHZ 8SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,803
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Product details
Overview
AK6416CM from Asahi Kasei Microdevices is a 16Kbit (1024 × 16) serial CMOS EEPROM with 1.8V–5.5V wide VCC operation, 8-word page write capability, and RDY/BUSY status signaling via dedicated pin and DO pin. It interfaces directly with one-chip microcomputer serial ports using a 3-line negative-clock synchronous interface and supports ultra-low standby current (0.8 µA max) for battery-powered data logging systems.
For engineers reviewing the AK6416CM datasheet, AK6416CM pinout, AK6416CM application, or AK6416CM equivalent, this device serves as a low-density non-volatile memory solution requiring precise timing control, hardware/software write protection, and reliable 10-year data retention in industrial sensor nodes and embedded control modules.
Technical Context
The AK6416CM implements a 3-wire synchronous serial interface with rising-edge DI sampling and falling-edge DO output, supporting READ, WRITE, PAGE WRITE, WREN, and WRDS instructions. Its internal address counter auto-increments during sequential reads and wraps at 1024-word boundary, enabling continuous streaming.
It integrates on-chip VPP generation for write operations, automatic 5ms self-timed programming with timeout, and dual write protection-hardware-controlled via RESET pin (must be low during write/page write) and software-controlled via WREN/WRDS op-codes. RDY/BUSY status is available both on dedicated pin (level-driven, CS-independent) and DO pin (status-output mode triggered by CS↓ while SK=low).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 16384 bits (1024 words × 16 bits); enables storage of calibration tables or configuration registers in compact MCU systems. |
| Supply Voltage Range | 1.8V to 5.5V; allows direct integration with 1.8V logic, 3.3V I/O, and 5V legacy microcontrollers without level-shifting. |
| Page Write Capacity | 8-word burst writes per cycle; reduces firmware overhead and bus occupancy versus byte-wise writes. |
| Standby Current | 0.8 µA max at VCC=5.5V; extends battery life in always-on sensor nodes and portable instrumentation. |
| Data Retention | 10 years at Ta ≤ +85°C; ensures long-term validity of stored calibration or security keys without refresh. |
| Endurance | 1,000,000 erase/write cycles per address; supports frequent field-updatable parameters in industrial controllers. |
| Max Clock Frequency | 5 MHz at VCC=4.5–5.5V; enables fast configuration loading during boot or runtime reconfiguration. |
Pinout & Package
AK6416CM is housed in an 8-pin Plastic SSOP (Shrink Small Outline Package) with 0.65 mm lead pitch, optimized for space-constrained PCB layouts in consumer and industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable; instruction reception starts on CS↓ while SK=high; status output mode enters on CS↓ while SK=low. |
| SK | Serial Clock input | Synchronous clock; DI sampled on rising edge, DO shifted out on falling edge; not required during BUSY state. |
| DI | Data Input | Serial input for op-code (8b), address (8b), and data (16b); accepts all instructions including WREN/WRDS. |
| DO | Data Output / Status | Outputs read data or READY/BUSY status (in status-output mode); high-impedance otherwise. |
| RESET | Reset input | Must be low during WRITE/Page Write execution and auto-programming; high level aborts write and returns to READY. |
| RDY/BUSY | Status output | Open-drain output; low = BUSY (internal programming active), high = READY; operates independently of CS state. |
| VCC | Power supply | 1.8V–5.5V supply; powers internal charge pump for VPP generation during write cycles. |
| GND | Ground | Reference for all I/O and internal circuitry; must be low-impedance connection for reliable timing and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware + Software Write Protection | RESET pin assertion halts ongoing write; WREN/WRDS op-codes enable/disable programming globally-prevents accidental overwrites during power transients or firmware bugs. |
| Dual RDY/BUSY Signaling | RDY/BUSY pin gives immediate external visibility into programming state; DO pin provides same status without extra pin-reduces BOM count in pin-limited designs. |
| Auto-Address Increment (READ) | Sequential 16-bit reads advance address automatically; eliminates host CPU address management overhead for bulk data retrieval. |
| Self-Timed Programming | Internal 5ms max write cycle with auto-erase; frees host MCU from timing-critical polling or fixed delays-simplifies driver development. |
| Wide-Voltage 3-Wire Interface | No external clock generator or level shifters needed; compatible with 1.8V, 2.5V, 3.3V, and 5V microcontrollers using standard GPIO and SPI peripherals. |
Applications
| Industrial Sensor Calibration | Consumer Appliance Configuration |
|---|---|
Use Scenario: Storing temperature-compensation coefficients and factory calibration offsets in smart pressure sensors deployed in HVAC systems. IC Role / Device Role / Timing Role: Non-volatile parameter storage with guaranteed 10-year retention and 1M-cycle endurance under periodic field recalibration. Use Value: Eliminates need for external backup batteries or supercapacitors while maintaining accuracy across thermal cycling and power interruptions. |
Use Scenario: Holding user preferences (e.g., display brightness, timer settings, language selection) in microwave ovens and washing machines. IC Role / Device Role / Timing Role: Low-power configuration memory accessed only during power-up or menu navigation; leverages 0.8 µA standby current. Use Value: Reduces system-level quiescent current to extend shelf-life and meet energy-efficiency certifications like ENERGY STAR. |
| Embedded Controller Firmware Patch Storage | Medical Device Usage Logs |
Use Scenario: Storing small firmware patches or hotfixes in programmable logic controllers (PLCs) where full flash reprogramming is impractical. IC Role / Device Role / Timing Role: Secure, write-protected auxiliary memory accessible via existing serial port-no additional MCU peripherals required. Use Value: Enables field-upgradable functionality without redesigning PCB layout or adding dedicated programming headers. |
Use Scenario: Recording usage timestamps, error codes, and operational hours in portable glucose meters and infusion pumps. IC Role / Device Role / Timing Role: Tamper-resistant event logger with hardware write protection (RESET-based) and software lock (WREN/WRDS). Use Value: Meets IEC 62304 traceability requirements for Class B medical devices through deterministic write sequencing and status feedback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Microchip 24LC16B | I²C interface (not SPI-compatible); 16Kbit (2K × 8), 1.8V–5.5V, 1M endurance, but lacks RDY/BUSY pin and RESET-controlled write abort. | Requires I²C master peripheral; no hardware write abort-relies solely on software timeout and retry logic. | Choose when I²C bus already exists and RDY/BUSY polling is acceptable; avoid if deterministic write abort or status pin is required. |
| ON Semiconductor CAT24C16 | I²C interface; 16Kbit (2K × 8), 1.7V–5.5V, includes write-protect pin (WP) but no RESET pin or RDY/BUSY output. | Supports simple hardware WP, but no status indication-host must use fixed delay or poll DO for ACK/NACK to infer completion. | Select for cost-sensitive, low-pin-count designs where I²C suffices and timing predictability is secondary to BOM simplicity. |
Compared with 24LC16B and CAT24C16, the AK6416CM offers unique advantages in deterministic write control (via RESET pin), dual-status signaling (RDY/BUSY pin + DO status mode), and native 16-bit word organization-reducing host-side bit-packing logic and improving firmware efficiency in microcontroller-constrained systems.
Availability
AK6416CM is available at Aetrix Electronics and suitable for industrial sensor calibration, consumer appliance configuration, embedded controller firmware patch storage, and medical device usage logs requiring stable component supply across extended product lifecycles.
Supply support for AK6416CM 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
Asahi Kasei Microdevices (AKM) is a Japanese semiconductor company specializing in analog, mixed-signal, and sensor ICs, with core expertise in audio, magnetic sensing, and non-volatile memory technologies.
The AK6416CM belongs to AKM's serial EEPROM product line, designed specifically for low-density, high-reliability data storage in resource-constrained embedded systems where robustness, wide voltage operation, and deterministic timing are critical.
FAQ
What is the maximum clock frequency supported by AK6416CM?
The AK6416CM supports up to 5 MHz serial clock (SK) frequency when VCC is between 4.5V and 5.5V. At lower voltages-2.5V to 4.5V-the maximum clock period increases to 400 ns (2.5 MHz), and at 1.8V to 2.5V it is 1.0 µs (1 MHz). These limits ensure reliable setup/hold timing for DI sampling and DO output across its full operating range, and are specified in the AC Electrical Characteristics table of the AK6416CM datasheet.
Does AK6416CM require an external high-voltage supply for write operations?
No, the AK6416CM does not require an external high-voltage supply. It integrates an on-chip VPP generator that derives the necessary programming voltage from the standard VCC supply (1.8V–5.5V). This eliminates the need for external charge pumps or voltage boosters, simplifying board design and reducing component count-making the AK6416CM especially suitable for compact, low-cost embedded systems.
How does the RDY/BUSY signal function on AK6416CM?
The AK6416CM provides RDY/BUSY status through two independent mechanisms: a dedicated open-drain RDY/BUSY pin outputs low during internal programming (BUSY) and high otherwise, regardless of CS state; and the DO pin outputs the same status when placed in status-output mode (CS↓ while SK=low). This dual-mode signaling allows flexible host-side monitoring-either via dedicated interrupt-capable GPIO or shared data line-without sacrificing pin count or timing predictability in the AK6416CM design.
Can AK6416CM perform page writes across address boundaries?
Yes, the AK6416CM supports wraparound page writes: after writing 8 consecutive 16-bit words starting at any address ending in "000", the internal address pointer rolls over from "XXX XXXX X111" to "XXX XXXX X000". If more than 8 words are sent, earlier data is overwritten sequentially (e.g., 9th word overwrites the 1st). This behavior is fully documented in the AK6416CM functional description and enables circular buffer implementations without host-side address management-enhancing firmware efficiency in real-time logging applications.
What happens if the RESET pin is driven high during a write cycle in AK6416CM?
If the RESET pin is driven high during an active write or page write cycle-including during the 5ms self-timed programming period-the AK6416CM immediately halts internal programming, exits BUSY state, and returns to READY. The partially written word at the target address becomes invalid or incomplete. Subsequent instructions require CS to be brought high first. This hardware-level write abort is a key reliability feature of the AK6416CM, preventing corrupted data under brown-out or reset conditions without relying on software timeouts.
AK6416CM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Asahi Kasei Microdevices/AKM
- Series:
- -
- Package/Case:
- 8-LSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 16Kbit
- Memory Organization:
- 1K x 16
- Memory Interface:
- SPI
- Clock Frequency:
- 5 MHz
- Write Cycle Time - Word, Page:
- -
- Access Time:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SSOP
AK6416CM FAQ
1.How can I place an order for AK6416CM through Aetrix?
Please submit a Request for Quotation (RFQ) for AK6416CM 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 AK6416CM reliable?
The price and inventory of AK6416CM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AK6416CM is usually 5 days.
3.What payment methods are accepted for AK6416CM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AK6416CM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AK6416CM?
AK6416CM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AK6416CM 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 AK6416CM?
For technical support, including AK6416CM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AK6416CM requirements.
6.How does Aetrix verify that AK6416CM is sourced from the original manufacturer or authorized distributors?
All AK6416CM 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 AK6416CM meets industry standards.
7.What is the process for return or replacement of AK6416CM?
All AK6416CM units undergo pre-shipment inspection (PSI). If there is an issue with AK6416CM, 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 AK6416CM part is unused and in its original packaging.
Return procedure for AK6416CM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AK6416CM Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
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AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
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