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Analog Devices Inc./Maxim Integrated 73S1209F-44IM/F
- Part No.:
- 73S1209F-44IM/F
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- 44-VFQFN Exposed Pad
- Datasheet:
-
73S1209F-44IM/F.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 44QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,810
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Product details
Overview
73S1209F-44IM/F from Teridian Semiconductor is a self-contained smart card reader IC with integrated 80515 CPU core, ISO/IEC 7816-3 and EMV 4.1 compliant UART bridge, 5×6 PINpad interface, and dual power supply support (2.7–3.6V digital / 4.75–5.5V analog). It delivers up to 24 MIPS for AES/DES/RSA-based PIN encryption and supports T=0/T=1 protocols in low-cost POS terminals and secure identification systems.
For engineers reviewing the 73S1209F-44IM/F datasheet, 73S1209F-44IM/F pinout, 73S1209F-44IM/F application, or 73S1209F-44IM/F equivalent, key selection criteria include its embedded EMV4.1 firmware stack, hardware-scanned keypad with scrambling, on-chip linear regulator for 1.8V/3V/5V smart card VCC generation, and I²C master interface for multi-SAM expansion - all in a 44-pin QFN package.
Technical Context
The 73S1209F-44IM/F integrates an 80515-compatible core running at up to 24 MHz with 32 KB Flash, 2 KB XRAM, and dedicated ISO7816 UART FIFOs independent of user memory. Its smart card interface includes full EMV 4.1 activation/deactivation sequencers, C4/C8 auxiliary signals, and 7 kV ESD protection on all contact pins.
It implements a dual-supply architecture: VDD (2.7–3.6 V) powers the digital core and peripherals, while VPC (4.75–5.5 V) feeds an internal LDO that precisely regulates smart card VCC to 1.8 V, 3 V, or 5 V. The I²C master (400 kbps) enables external Teridian 73S8010R/C interfaces for multi-slot or multi-SAM configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 80515-compatible, 1-cycle/instruction, 24 MHz max → 24 MIPS for real-time PIN encryption (AES/3-DES/RSA) |
| Memory | 32 KB Flash (in-system programmable + fuse-lockable), 2 KB XRAM, 256 B IRAM, dedicated ISO7816 TX/RX FIFOs |
| Smart Card Interface | Fully compliant with ISO/IEC 7816-3 and EMV 4.1; supports T=0/T=1 protocols; built-in VCC LDO (1.8/3/5 V selectable) |
| Communication | Full-duplex UART (1200 bps – 115.2 kbps), I²C master (400 kbps), JTAG-like emulator port for firmware development |
| Man-Machine Interface | Hardware-scanned 5×6 keypad with debounce/scrambling, 9 user I/Os, 2 programmable-current LED drivers, 1 analog voltage input (1.0–2.5 V range) |
| Power & Environment | VDD = 2.7–3.6 V (digital), VPC = 4.75–5.5 V (smart card VCC source); operating temperature: −40°C to +85°C |
Pinout & Package
73S1209F-44IM/F is housed in a 44-pin QFN package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per datasheet Figures 42 and 44 and Table 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Digital power supply | 2.7–3.6 V input for CPU core, UART, I²C, keypad logic, and digital I/Os |
| VPC | Analog/smart card power supply | 4.75–5.5 V input to internal LDO generating precise 1.8/3/5 V VCC for smart card interface |
| RST | Active-low reset input | Asynchronous reset signal; initiates cold start sequence and memory initialization |
| CLKIN | Crystal oscillator input | Accepts 6–12 MHz fundamental-mode crystal; PLL generates internal 96 MHz MCLK |
| TXD0 / RXD0 | UART0 serial interface | Full-duplex asynchronous communication (1200 bps – 115.2 kbps) with host microprocessor or PC |
| SCL / SDA | I²C master interface | 400 kbps bidirectional bus for driving external 73S8010R/C smart card interface ICs |
| KR0–KR4 | Keypad row drivers | 5 active-low outputs for 5×6 matrix scanning; include hardware debouncing and scrambling logic |
| KC0–KC5 | Keypad column inputs | 6 inputs detecting key closures; synchronized with KRx scanning for secure PIN entry |
| LED0 / LED1 | Programmable-current LED outputs | Current-sink outputs (configurable 2–20 mA) for status indication without external drivers |
| AIN | Analog voltage input | Monitors battery level or DC supply (1.0–2.5 V range); used for low-voltage warning or shutdown |
Key Features
| Feature | Design Value |
|---|---|
| Turnkey EMV4.1 firmware | Pre-certified PC/SC and CCID-compliant stack with Windows XP/CE/Mobile and Linux driver support - reduces certification time by >6 months |
| Hardware keypad security | On-die 5×6 scanning with real-time keypress scrambling and debounce eliminates side-channel timing attacks on PIN entry |
| Multi-SAM expandability | I²C master interface directly controls external Teridian 73S8010R/C ICs - enables dual/multi-card readers without additional MCU resources |
| Smart card VCC regulation | Integrated LDO with automatic 1.8/3/5 V selection per card ATR - removes need for external voltage-switching circuitry and saves ≥3 BOM components |
| In-circuit emulation | JTAG-like debug port supports real-time firmware development, flash programming, and runtime register inspection - accelerates bring-up and validation |
Applications
| POS Terminal PIN Entry | Government ID Smart Card Reader |
|---|---|
|
Use Scenario: Low-cost retail point-of-sale terminal requiring secure, tamper-resistant PIN capture and EMV-compliant card processing. IC Role / Device Role / Timing Role: Self-contained UART-to-ISO7816 bridge with integrated keypad controller and encrypted PIN path - handles card activation, ATR parsing, command/response exchange, and scrambled key scan. Use Value: Eliminates external MCU, UART transceiver, and discrete keypad controller - reduces BOM cost by ~35% and design cycle by 8–12 weeks. |
Use Scenario: National e-ID enrollment kiosk needing certified EMV4.1 and ISO7816-3 compliance for citizen identity verification and digital signature. IC Role / Device Role / Timing Role: Certified smart card interface IC executing EMV cryptographic operations (RSA signing, DES session keys) and managing dual-interface (contact + contactless via SAM) protocols. Use Value: Pre-integrated EMV4.1 libraries and turnkey firmware accelerate Common Criteria EAL4+ certification - cuts qualification effort by ≥40% versus custom solutions. |
| SIM Card Reader Module | Vending Machine Secure Payment |
|
Use Scenario: Telecom base station or mobile hotspot requiring SIM authentication and OTA profile updates over serial interface. IC Role / Device Role / Timing Role: ISO7816 UART bridge with T=0 protocol support and hardware watchdog - manages SIM reset, ATR, and APDU exchange with carrier backend servers. Use Value: Built-in 7 kV ESD protection on card pins and robust power-down modes ensure field reliability in uncontrolled environments - extends MTBF beyond 100,000 hours. |
Use Scenario: Unattended beverage or transit vending machine accepting EMV chip-and-PIN payments in public spaces. IC Role / Device Role / Timing Role: Standalone PINpad + smart card reader IC with battery-monitoring analog input (AIN) and programmable LED feedback - operates autonomously during mains outage. Use Value: Integrated analog voltage detection and dual-power architecture enable graceful shutdown and audit logging during brownout - meets UL 294 and EN 1145 safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart card reader bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon SLE78CLY20PM-96S | ARM Cortex-M0+ core (48 MHz), 128 KB Flash, native USB interface; no integrated keypad controller or analog voltage input | Requires external MCU for PINpad handling and battery monitoring; targets USB-connected readers, not serial-hosted designs | Choose when USB connectivity, larger code space, or ARM toolchain compatibility outweighs BOM simplicity and serial integration. |
| NXP SLN10SE401K1 | Secure Element + NFC controller combo; lacks UART bridge, keypad interface, and EMV4.1 firmware stack - requires host-side EMV stack | Designed for NFC-enabled mobile payment terminals; not suitable as drop-in replacement for standalone PINpad readers | Choose only for NFC-first designs where host processor handles EMV logic and PIN entry is offloaded to separate keypad MCU. |
Compared with Infineon SLE78CLY20PM-96S and NXP SLN10SE401K1, the 73S1209F-44IM/F uniquely combines UART bridge, hardware-scanned keypad, analog battery sensing, and pre-certified EMV4.1 firmware in a single 44-pin QFN - enabling fully autonomous, low-BOM serial readers without host-side crypto or UI logic.
Availability
73S1209F-44IM/F is available at Aetrix Electronics and suitable for POS terminals, government ID readers, SIM authentication modules, and vending machine payment systems requiring stable component supply across long-lifecycle industrial deployments.
Supply support for 73S1209F-44IM/F 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
Teridian Semiconductor Corporation was a fabless analog/mixed-signal IC designer acquired by Maxim Integrated in 2010; its smart card and metering portfolio continues under Maxim's legacy product line.
The 73S1209F-44IM/F belongs to Teridian's 73S12xxF family of secure smart card interface SoCs, engineered specifically for cost-sensitive, certification-driven applications like EMV-compliant PINpads and portable ID readers.
FAQ
What is the primary function of the 73S1209F-44IM/F in a smart card system?
The 73S1209F-44IM/F serves as a self-contained UART-to-ISO7816/EMV bridge IC with integrated 80515 CPU, keypad controller, and smart card power regulation. It executes EMV4.1 transactions, manages T=0/T=1 protocols, scans and scrambles PIN entries, and generates precise 1.8/3/5 V VCC for cards - eliminating need for external MCU or discrete interface components in the 73S1209F-44IM/F design.
Does the 73S1209F-44IM/F support both contact and contactless smart cards?
The 73S1209F-44IM/F natively supports only contact smart cards per ISO/IEC 7816-3 and EMV 4.1 standards. It does not include NFC or RF front-end circuitry. However, its I²C master interface can drive external Teridian 73S8010R/C ICs to add multi-SAM capability - enabling hybrid architectures where contactless functionality is handled by a companion SAM, but the 73S1209F-44IM/F remains the central UART bridge and PINpad controller.
What power supplies are required for proper operation of the 73S1209F-44IM/F?
The 73S1209F-44IM/F requires two independent supplies: VDD (2.7–3.6 V) for digital logic, CPU, and I/Os; and VPC (4.75–5.5 V) for the internal LDO that generates regulated smart card VCC. The 73S1209F-44IM/F cannot operate with a single supply - omitting VPC disables card power delivery and prevents ISO7816 communication, even if VDD is present.
Can custom firmware be loaded onto the 73S1209F-44IM/F, or is it limited to Teridian's turnkey solution?
Yes, the 73S1209F-44IM/F supports full custom firmware development via its JTAG-like emulator port. Customers may replace Teridian's turnkey PC/SC/CCID firmware with proprietary code written in ANSI C using Teridian's two-level API libraries for ISO7816, EMV4.1, and low-level peripherals - all while retaining access to the 73S1209F-44IM/F's hardware features including keypad scanning and VCC regulation.
Is the 73S1209F-44IM/F pin-compatible with other members of the 73S12xxF family, such as the 73S1209F-68IM/F?
No, the 73S1209F-44IM/F is not pin-compatible with the 68-pin QFN variant. The 44-pin and 68-pin packages have different pin counts, layouts, and signal allocations - documented separately in datasheet Figures 42 and 43. Migration between them requires PCB redesign. The 73S1209F-44IM/F pinout is fixed per its 44-QFN footprint and must be laid out accordingly to ensure correct VDD/VPC routing, keypad matrix connection, and UART/I²C interface integrity.
73S1209F-44IM/F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 44-VFQFN Exposed Pad
- Series:
- 73S12xx
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 80515
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, SmartCard, UART/USART
- Peripherals:
- LED, POR, WDT
- Number of I/O:
- 9
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
73S1209F-44IM/F FAQ
1.How can I place an order for 73S1209F-44IM/F through Aetrix?
Please submit a Request for Quotation (RFQ) for 73S1209F-44IM/F 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 73S1209F-44IM/F reliable?
The price and inventory of 73S1209F-44IM/F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 73S1209F-44IM/F is usually 5 days.
3.What payment methods are accepted for 73S1209F-44IM/F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 73S1209F-44IM/F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 73S1209F-44IM/F?
73S1209F-44IM/F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 73S1209F-44IM/F 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 73S1209F-44IM/F?
For technical support, including 73S1209F-44IM/F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 73S1209F-44IM/F requirements.
6.How does Aetrix verify that 73S1209F-44IM/F is sourced from the original manufacturer or authorized distributors?
All 73S1209F-44IM/F 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 73S1209F-44IM/F meets industry standards.
7.What is the process for return or replacement of 73S1209F-44IM/F?
All 73S1209F-44IM/F units undergo pre-shipment inspection (PSI). If there is an issue with 73S1209F-44IM/F, 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 73S1209F-44IM/F part is unused and in its original packaging.
Return procedure for 73S1209F-44IM/F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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