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Analog Devices Inc./Maxim Integrated 73S1209F-44IMR/F
- Part No.:
- 73S1209F-44IMR/F
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Microcontrollers
- Package:
- 44-VFQFN Exposed Pad
- Datasheet:
-
73S1209F-44IMR/F.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 44QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,207
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Product details
Overview
73S1209F-44IMR/F from Teridian Semiconductor is a self-contained smart card reader IC with integrated UART-to-ISO/EMV bridge, 80515 CPU core (24MHz, 24MIPS), 32KB Flash, 2KB XRAM, and hardware 5×6 PINpad interface. It delivers full EMV 4.1 and ISO-7816 T=0/T=1 compliance while supporting 1.8V/3V/5V smart card voltages via on-chip LDO - enabling low-cost, serial-connected PINpad readers for POS terminals and secure ID systems.
For engineers reviewing the 73S1209F-44IMR/F datasheet, 73S1209F-44IMR/F pinout, 73S1209F-44IMR/F application, or 73S1209F-44IMR/F equivalent, key selection criteria include dual-supply operation (2.7–3.6V VDD + 4.75–5.5V VPC), built-in I²C master for multi-SAM expansion, programmable LED drivers, analog voltage input for battery monitoring, and turnkey PC/SC & CCID firmware support across Windows XP/CE/Mobile and Linux.
Technical Context
The 73S1209F-44IMR/F integrates an 80515-compatible core with single-cycle instruction execution and a dedicated ISO-7816 UART featuring independent 2-byte TX/RX FIFOs - eliminating contention with user memory. Its internal PLL derives all system clocks from a 6–12MHz crystal, enabling precise ETU timing and synchronous/asynchronous card activation per EMV 4.1.
Smart card power management is handled by an integrated LDO that generates regulated VCC (1.8V/3V/5V) from VPC, while the analog comparator monitors external DC voltage (1.0–2.5V range) for battery-level detection. The I²C master (400kbps) enables daisy-chained expansion to external Teridian 73S8010x interfaces for multi-slot or multi-SAM architectures without host MCU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 80515-compatible, 1-cycle/instruction, up to 24MHz → 24MIPS for real-time AES/DES/RSA encryption |
| Memory | 32KB Flash (in-system programmable + fuse-lockable), 2KB XRAM, 256B IRAM - supports secure firmware deployment and runtime data buffering |
| Smart Card Interface | Full ISO-7816 T=0/T=1 UART with 2×2-byte FIFOs; on-chip LDO supplies 1.8V/3V/5V VCC to card - eliminates external regulators |
| Power Supplies | VDD = 2.7–3.6V (digital logic), VPC = 4.75–5.5V (smart card VCC generation) - enables dual-rail isolation and robust card power control |
| Peripheral Interfaces | Full-duplex UART (1200bps–115kbps), I²C master (400kbps), 5×6 hardware keypad scanner, 9 GPIOs, 2 programmable-current LED outputs |
| Analog Input | Single analog voltage input (1.0–2.5V range) for battery level or supply monitoring - no external ADC required |
| Operating Temp | -40°C to +85°C - qualified for industrial and uncontrolled retail environments including outdoor kiosks and fuel dispensers |
Pinout & Package
73S1209F-44IMR/F is housed in a 44-pin QFN package (7mm × 7mm, 0.5mm pitch) with exposed thermal pad. Pin functions are defined per datasheet Figures 42 and 44 and Table 1, supporting compact, low-profile PINpad designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Digital power supply | 2.7–3.6V supply for CPU core, peripherals, and digital I/O - decoupling required near pin |
| VPC | Analog/smart card power supply | 4.75–5.5V input to internal LDO generating regulated VCC for smart card - isolated from digital rail |
| CLKIN | Crystal oscillator input | Accepts 6–12MHz fundamental-mode crystal - drives internal PLL for all system clocks |
| RST | Active-low reset input | Asynchronous reset with internal pull-up; debounced externally for reliable power-on initialization |
| TXD0/RXD0 | UART0 serial interface | Full-duplex host communication (1200bps–115kbps); supports PC/SC/CCID protocol stack |
| SCL/SDA | I²C master interface | 400kbps bus for connecting external 73S8010x smart card interface ICs - enables multi-SAM expansion |
| KR0–KR4 | Keypad row drivers | 5 dedicated outputs for 5×6 matrix scanning - includes hardware debounce and scrambling |
| KC0–KC5 | Keypad column inputs | 6 inputs for column sensing - paired with KR0–KR4 to form self-contained 30-key PINpad interface |
| LED0/LED1 | Programmable current LED outputs | Configurable drive strength (0–20mA) for status indicators - reduces BOM vs discrete LED drivers |
| AIN | Analog voltage input | Monitors 1.0–2.5V DC sources (e.g., battery) - used for low-power alert or sleep-triggering logic |
Key Features
| Feature | Design Value |
|---|---|
| Turnkey EMV 4.1 firmware | Pre-certified PC/SC and CCID stack with Windows XP/CE/Mobile and Linux drivers - accelerates EMV Level 1 certification |
| Hardware PINpad engine | Integrated 5×6 keypad scanner with debounce, anti-tamper scrambling, and interrupt-driven key event reporting - offloads host MCU |
| Dual-supply smart card power | On-chip LDO converts VPC to precise 1.8V/3V/5V VCC - eliminates external regulators and simplifies compliance testing |
| Expandable architecture | I²C master interface supports cascading of Teridian 73S8010x ICs - enables 2+ card slots or SAM modules without redesign |
| Secure Flash programming | 32KB Flash with on-silicon fuse locking - prevents firmware extraction and supports field updates with cryptographic signing |
Applications
| POS Terminal PINpad | Government ID Reader |
|---|---|
Use Scenario: Compact, serial-connected PIN entry device embedded in countertop or mobile payment terminals. IC Role / Device Role / Timing Role: Self-contained UART-to-ISO7816 bridge with integrated PINpad, handling card activation, ATR exchange, encrypted PIN block generation, and host communication. Use Value: Reduces BOM count by integrating CPU, smart card interface, keypad, LEDs, and voltage monitor - cuts PCB area and validation effort. | Use Scenario: Secure citizen ID card reader for e-passport verification or national healthcare card authentication. IC Role / Device Role / Timing Role: EMV-compliant smart card interface executing T=1 protocol with deterministic timing for cryptographic challenge-response sequences. Use Value: Built-in 24MIPS 80515 core executes RSA-1024 signature verification locally - avoids exposing private keys to host system. |
| SIM Card Reader Module | Vending Machine Controller |
Use Scenario: SIM card interface in telecom gateways or IoT cellular routers requiring remote provisioning and OTA updates. IC Role / Device Role / Timing Role: ISO-7816 T=0/T=1 bridge translating UART commands to SIM card APDU traffic with precise clock control. Use Value: Hardware UART FIFOs prevent data loss during high-speed APDU bursts - ensures reliable OTA command delivery. | Use Scenario: Payment-enabled beverage or ticket vending machine with contact smart card support. IC Role / Device Role / Timing Role: Low-cost, standalone smart card reader managing card insertion detection, power sequencing, and transaction logging. Use Value: Analog voltage input monitors battery health in off-grid deployments - triggers graceful shutdown before power failure corrupts logs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar UART-to-ISO7816 bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Infineon SLE78CLXXCM-82F | ARM Cortex-M0+ core (48MHz), 128KB Flash, integrated crypto accelerator; requires external 3.3V LDO for card VCC | Targets higher-security applications needing SHA-256/HMAC; lacks native PINpad interface - needs external matrix controller | Select when cryptographic throughput >24MIPS is required and PINpad functionality is implemented separately |
| NXP SLN10SE01000 | ARM Cortex-M0 core (32MHz), 64KB Flash, no integrated smart card LDO; supports only 3V/5V card voltages (no 1.8V) | Optimized for NFC + contactless readers; limited GPIO count (6) and no hardware keypad scanner | Select for hybrid contact/contactless readers where 1.8V card support and PINpad are not required |
Compared with Infineon SLE78CLXXCM-82F and NXP SLN10SE01000, the 73S1209F-44IMR/F uniquely combines EMV 4.1 compliance, hardware 5×6 PINpad, dual-supply smart card LDO, and turnkey PC/SC firmware - making it optimal for cost-sensitive, serial-connected PINpad designs requiring minimal external components.
Availability
73S1209F-44IMR/F is available at Aetrix Electronics and suitable for POS terminal design, government ID reader development, and vending machine controller integration requiring stable component supply and long-term lifecycle assurance.
Supply support for 73S1209F-44IMR/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 IC designer specializing in mixed-signal SoCs for secure transaction systems, later acquired by Maxim Integrated (now part of Analog Devices).
The 73S1209F product line targets self-contained smart card reader subsystems - integrating CPU, ISO-7816 interface, PINpad, and firmware to eliminate host MCU dependency in payment and identity verification devices.
FAQ
What is the primary function of the 73S1209F-44IMR/F in a smart card system?
The 73S1209F-44IMR/F serves as a self-contained UART-to-ISO7816/EMV bridge IC with integrated 80515 CPU, smart card interface, and 5×6 PINpad controller. It handles card activation, ATR exchange, T=0/T=1 protocol translation, encrypted PIN block generation, and host communication - enabling complete smart card reader functionality without external microcontroller intervention. The 73S1209F-44IMR/F is designed for plug-and-play integration into serial-based POS and ID systems.
Does the 73S1209F-44IMR/F support all three smart card operating voltages (1.8V, 3V, 5V)?
Yes, the 73S1209F-44IMR/F fully supports 1.8V, 3V, and 5V smart card operation through its integrated low-dropout linear regulator, which generates precise VCC from the VPC supply. This eliminates the need for external voltage-switching circuitry and ensures compliance with EMV 4.1 voltage sequencing requirements. The 73S1209F-44IMR/F automatically detects and configures the correct voltage based on card ATR response.
What development tools are available for custom firmware on the 73S1209F-44IMR/F?
Teridian provided a JTAG-like emulator port and evaluation board for developing custom firmware on the 73S1209F-44IMR/F. Customers could use ANSI C-language libraries for ISO-7816, EMV 4.1, and low-level peripherals, along with two-tier API support. The 73S1209F-44IMR/F also supports in-system Flash programming and fuse-based security locking - enabling secure field updates and production programming without special equipment.
Can the 73S1209F-44IMR/F drive multiple smart card slots?
Yes, the 73S1209F-44IMR/F supports multi-slot expansion via its I²C master interface (400kbps), which can control external Teridian 73S8010x smart card interface ICs. This allows daisy-chaining of up to two or more 73S8010x devices to manage additional card slots or SAM modules - all coordinated by the 73S1209F-44IMR/F's embedded firmware without host MCU involvement.
What is the role of the analog input (AIN) pin on the 73S1209F-44IMR/F?
The AIN pin on the 73S1209F-44IMR/F provides a dedicated analog voltage input with a 1.0V to 2.5V detection range, used primarily for battery-level monitoring in portable or off-grid smart card readers. It connects directly to an internal comparator - enabling low-power wake-up, charge-state indication, or graceful shutdown before brownout. The 73S1209F-44IMR/F does not include an ADC; AIN is threshold-based, not digitized.
73S1209F-44IMR/F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 44-VFQFN Exposed Pad
- Series:
- 73S12xx
- Packaging:
- Tape & Reel (TR)
- 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-44IMR/F FAQ
1.How can I place an order for 73S1209F-44IMR/F through Aetrix?
Please submit a Request for Quotation (RFQ) for 73S1209F-44IMR/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-44IMR/F reliable?
The price and inventory of 73S1209F-44IMR/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-44IMR/F is usually 5 days.
3.What payment methods are accepted for 73S1209F-44IMR/F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 73S1209F-44IMR/F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 73S1209F-44IMR/F?
73S1209F-44IMR/F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 73S1209F-44IMR/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-44IMR/F?
For technical support, including 73S1209F-44IMR/F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 73S1209F-44IMR/F requirements.
6.How does Aetrix verify that 73S1209F-44IMR/F is sourced from the original manufacturer or authorized distributors?
All 73S1209F-44IMR/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-44IMR/F meets industry standards.
7.What is the process for return or replacement of 73S1209F-44IMR/F?
All 73S1209F-44IMR/F units undergo pre-shipment inspection (PSI). If there is an issue with 73S1209F-44IMR/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-44IMR/F part is unused and in its original packaging.
Return procedure for 73S1209F-44IMR/F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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