STMicroelectronics CR14-MQP/1GE

Overview

CR14-MQP/1GE from STMicroelectronics is an ISO/IEC 14443 Type-B contactless coupler IC designed for short-range RFID reader front-ends. It implements full analog RF interface, ASK-modulated 13.56 MHz carrier generation (10% modulation), BPSK sub-carrier (847 kHz) demodulation, CRC management, and automated ST anti-collision protocol. It operates from a single 5 V ±500 mV supply and interfaces to host microcontrollers via I²C at up to 400 kHz - used in secure access terminals and disposable smart card readers.

For engineers reviewing the CR14-MQP/1GE datasheet, CR14-MQP/1GE pinout, CR14-MQP/1GE application, or CR14-MQP/1GE equivalent, key selection criteria include ISO14443-B compliance, integrated RF driver/receiver architecture, 36-byte frame register depth, chip enable addressing (E0–E2), and SO16N package compatibility with antenna matching networks.

Technical Context

The CR14-MQP/1GE integrates four functional blocks: an I²C bus controller compliant with 400 kHz timing, a bi-directional 36-byte RAM buffer for request/answer frames, a transmitter generating 13.56 MHz ASK-modulated RF output (RFOUT), and a receiver using BPSK sub-carrier demodulation on RFIN. It requires an external 13.56 MHz crystal connected between OSC1 and OSC2.

All ISO14443-B RF layer functions - including SOF/EOF framing, CRC-16 generation/check, and probabilistic anti-collision sequence execution - are hardware-managed. The host MCU controls protocol sequencing via I²C register writes (Parameter Register at 00h, I/O Frame Register at 01h, Slot Marker Register at 03h), with no firmware overhead for RF signal conditioning.

Key Specifications

Pinout & Package

CR14-MQP/1GE is housed in a SO16N (SO16 narrow) plastic small-outline package, 150 mils body width, with 16 leads and standard gull-wing lead form. Pin pitch is 1.27 mm; package conforms to JEDEC MS-012AC.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ISO14443-B coupler applications.

Compared with SLI13S and TRF7970A, CR14-MQP/1GE delivers optimal balance of ISO14443-B specificity, hardware anti-collision autonomy, and multi-device I²C scalability - making it ideal for cost-sensitive, high-volume fixed-reader deployments where protocol extension is unnecessary.

Availability

CR14-MQP/1GE is available at Aetrix Electronics and suitable for secure access terminals, smart ID card readers, and public transport fare validators requiring stable component supply across industrial lifecycle horizons.

Supply support for CR14-MQP/1GE 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, power management, and analog/mixed-signal ICs for industrial, automotive, and consumer markets.

CR14-MQP/1GE belongs to ST's contactless interface product line, engineered specifically for ISO14443-B reader applications demanding minimal host MCU involvement in RF layer operations.

FAQ

What external components are mandatory for CR14-MQP/1GE operation?

The CR14-MQP/1GE requires a 13.56 MHz crystal between OSC1 and OSC2, a decoupling capacitor on VREF, and an LRC antenna network connected to RFOUT and RFIN. Per Figure 4 of Doc ID 11922 Rev 2, C1/C2 (7 pF), C3 (22 nF), C7/C7′ (120 pF / 33 pF), and C8/C8′ (100 pF / 8 pF) form the matching network. VCC must be bypassed with C4 (22 µF) and C6 (100 nF).

How does the CR14-MQP/1GE handle multiple PICCs in its field?

It executes ST's proprietary probabilistic anti-collision algorithm via the Slot Marker Register (03h). Writing to this register initiates automatic scanning from Slot_0 to Slot_15; the CR14 hardware detects PICC responses and isolates individual devices without host CPU intervention - confirmed in Sections 7.2 and Figure 31–32 of the datasheet.

Can CR14-MQP/1GE operate with I²C buses running above 400 kHz?

No. The CR14-MQP/1GE is specified only for standard-mode I²C at ≤400 kHz, as stated in Section 4 and Table 12 (I²C AC characteristics). Attempting faster clocks violates setup/hold timing margins and risks register access corruption - no fast-mode (1 MHz) or high-speed mode support is implemented.

Is CR14-MQP/1GE pin-compatible with earlier CR14 variants like CR14-MQP/1G?

Yes. CR14-MQP/1GE uses the identical SO16N package and pinout as CR14-MQP/1G and CR14-MQP/1F. All share identical mechanical dimensions, thermal characteristics, and electrical pin functions - verified in Table 15 (package mechanical data) and Figure 3 (SO pin connections) of Doc ID 11922 Rev 2.