Analog Devices Inc./Maxim Integrated 73S1215F-44IM/F/P

Overview

73S1215F-44IM/F/P from Teridian Semiconductor is an 80515-based System-on-Chip for smart card reader systems, integrating ISO 7816/EMV 4.1-compliant smart card interface, USB 2.0 Full-Speed (12 Mbps) device controller, and hardware-scanned 5×6 PINpad. It delivers up to 20 MIPS at 24 MHz CPU clock, features 64 KB Flash, 2 KB XRAM, and operates from 2.7–3.6 V (3–3.6 V with USB active). It enables CCID-compliant handheld PINpad readers and ExpressCard® modules.

For engineers reviewing the 73S1215F-44IM/F/P datasheet, 73S1215F-44IM/F/P pinout, 73S1215F-44IM/F/P application, or 73S1215F-44IM/F/P equivalent, key selection criteria include EMV 4.1 compliance, integrated USB endpoint FIFO sizing (16B control / 32B interrupt IN / 128B bulk IN & OUT), real-time clock support via optional 32.768 kHz oscillator, and on-chip LDO for 1.8/3/5 V smart card VCC generation.

Technical Context

The 73S1215F-44IM/F/P implements a single-core 80515 CPU with one-cycle-per-instruction execution and internal PLL generating 96 MHz MCLK from 6–12 MHz crystal input. Its memory subsystem includes 64 KB Flash (in-system programmable and fuse-lockable), 2 KB XRAM, and 256 B IRAM - all directly addressable by the core without banking.

Hardware peripherals are tightly coupled: ISO 7816 UART supports T=0/T=1 protocols with dedicated 2-byte TX/RX FIFOs; USB 2.0 Full-Speed interface provides four endpoints with configurable FIFO depths; and the keypad controller handles 5×6 matrix scanning, debouncing, and scrambling in hardware. All interfaces share interrupt routing through a 4-priority-level 80C515-compatible structure.

Key Specifications

Pinout & Package

73S1215F-44IM/F/P 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 Section 5.2 and Figure 45.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar smart card reader SoC applications.

Compared with Infineon SLE78CLXX and NXP SLN10RSxx, the 73S1215F-44IM/F/P uniquely combines EMV 4.1-certified hardware smart card interface, CCID-compliant USB firmware, and fully autonomous 5×6 PINpad controller - enabling certified, low-BOM, single-chip PINpad reader designs without external protocol offload or security co-processors.

Availability

73S1215F-44IM/F/P is available at Aetrix Electronics and suitable for hand-held PINpad readers, ExpressCard® modules, and desktop USB smart card readers requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial and financial-grade deployments.

Supply support for 73S1215F-44IM/F/P 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 was a fabless analog/mixed-signal IC company specializing in metering, powerline communications, and secure transaction SoCs before its acquisition by Maxim Integrated in 2010.

The 73S1215F belongs to Teridian's secure smart card reader SoC product line, designed specifically to integrate EMV-compliant card interface, USB connectivity, and PIN entry into a single chip for cost-sensitive, high-volume financial terminal applications.

FAQ

What is the maximum CPU performance of the 73S1215F-44IM/F/P?

The 73S1215F-44IM/F/P features an 80515 core running at up to 24 MHz with one-cycle-per-instruction execution for most opcodes, delivering up to 20 MIPS. This performance level is validated for real-time execution of AES, DES/3-DES, and RSA cryptographic operations required in EMV-compliant PIN encryption workflows within the 73S1215F-44IM/F/P.

Does the 73S1215F-44IM/F/P support EMV Level 1 and Level 2 certification?

Yes, the 73S1215F-44IM/F/P is fully compliant with EMV 4.1 specification for physical and electrical interface (Level 1) and protocol handling (T=0/T=1, ATR generation, activation/deactivation sequences) at Level 2. Certification evidence is documented in Teridian's EMV test reports referenced in the 73S1215F-44IM/F/P datasheet Appendix A.

Can the 73S1215F-44IM/F/P operate without an external 32.768 kHz crystal?

Yes, the 73S1215F-44IM/F/P can operate without the optional 32.768 kHz crystal. The RTC function is disabled by default; the main 6–12 MHz crystal alone powers the PLL and all core/peripheral clocks. The 32.768 kHz oscillator is only required if standalone real-time clock functionality is needed in battery-backed applications.

What USB classes does the 73S1215F-44IM/F/P natively support?

The 73S1215F-44IM/F/P implements the USB Communication Device Class (CDC) Abstract Control Model (ACM) and Chip/Smart Card Interface Device (CCID) class in firmware. Its pre-validated CCID stack enables immediate PC/SC compatibility on Windows, macOS, and Linux without custom driver development - a core capability of the 73S1215F-44IM/F/P.

Is the 73S1215F-44IM/F/P pin-compatible with other members of the 73S12xxF family?

No, the 73S1215F-44IM/F/P is not pin-compatible with other 73S12xxF variants such as the 68-pin 73S1215F-68IM/F/P. While sharing identical functionality and register mapping, the 44-pin QFN package uses a distinct pin assignment optimized for compact PINpad reader layouts - confirmed in datasheet Figures 44 and 45.