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Microchip Technology AT83C26-RKRUL
- Part No.:
- AT83C26-RKRUL
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- -
- Datasheet:
-
AT83C26-RKRUL.pdf
- Description:
- IC INTERFACE SPECIALIZED 48VQFP
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Product details
Overview
AT83C26-RKRUL from Microchip Technology is a smart card reader interface IC supporting up to five ISO 7816-compliant smart card interfaces with integrated DC/DC converters, programmable voltage regulation (1.8V/3V/5V), and TWI host control. It delivers 60 mA at ±0.4V (Class A), features 4 kV ESD protection on card pins, and operates across –40°C to +85°C for EFT/POS terminals and set-top boxes.
For engineers reviewing the AT83C26-RKRUL datasheet, AT83C26-RKRUL pinout, AT83C26-RKRUL application, or AT83C26-RKRUL equivalent, this device enables multi-card management with synchronous card support (C4/C8), automatic de-activation on card extraction or over-current, and low-power operation (30 µA typical in power-down mode).
Technical Context
The AT83C26-RKRUL integrates two independent DC/DC converters: DC/DC A powers SC1 (CVCC1) with pump or regulator mode selection via STEPREGA; DC/DC B supplies SC2–SC5 through four LDOs (CVCC2–CVCC5), configurable via VDCB[1:0] and STEPREGB. Each smart card interface supports programmable activation/deactivation sequences, card presence detection (CPRES1/CPRES2), and clock stop control (CCLKn) for power-down modes.
Its TWI interface operates at 400 kbit/s with programmable slave address (0x42–0x4E), enabling up to four devices on one bus. The internal clock controller derives CCLK1–CCLK5 from CLK, DCCLK, A2/CK, or CARDCKn sources, while CRSTn outputs support ART (Automatic Reset Transition), bit-controlled, or transparent modes via A1/RST.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Smart Card Interfaces | 5 total: SC1 (dedicated DC/DC A), SC2–SC5 (shared DC/DC B + LDOs); SC2_FULL bit selects between full SC2 (CC4/CC8) or SC3 interface. |
| Supply Voltage Range | 3.0 V to 5.5 V - supports single-rail industrial systems without external regulators. |
| Output Voltage Classes | Class A: 5 V ±0.4 V @ 60 mA; Class B: 3 V ±0.2 V @ 60 mA; Class C: 1.8 V ±0.14 V @ 40 mA - precise compliance with ISO 7816 voltage tolerances. |
| Host Interface | Two-Wire Interface (TWI) at 400 kbit/s with 4 programmable addresses - enables daisy-chained multi-device smart card readers. |
| ESD Protection | 4 kV HBM on smart card pins (CRST/CIO/CC4/CC8), 2 kV on other I/O - meets MIL-STD-883 Class 3 for field-reliable card insertion. |
| Power Consumption | 5 mA max operating current (no card), 30 µA typical power-down current - extends battery life in portable POS terminals. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and outdoor payment infrastructure deployments. |
Pinout & Package
AT83C26-RKRUL is available in QFN48 and VQFP48 packages (pin-compatible footprints). Both packages provide identical signal mapping and thermal performance, with dual CVCC1/CVCCB pins per supply rail to reduce noise coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CRST1, CRST2, CRST3/CC82, CRST4, CRST5 | Card Reset Output | Individually controlled reset signals for each smart card interface; CRST3/CC82 and CIO3/CC42 share pins depending on SC2_FULL configuration. |
| CIO1–CIO5, CC41/CC42, CC81/CC82 | Smart Card I/O Interface | Bidirectional, pull-up I/Os with slew-rate control; CC4/CC8 pins enable synchronous card (EMV/GSM) support on SC1 and SC2. |
| CPRES1, CPRES2 | Card Presence Input | Dedicated inputs with programmable polarity and filtering; trigger interrupts on insertion/extraction for automatic session management. |
| SCL, SDA | TWI Host Interface | Open-drain, 400 kbit/s bus lines with external 4.7 kΩ pull-ups; support up to 4 devices via A1/RST and A2/CK address pins. |
| INT | Interrupt Output | Open-drain status flag indicating card events (insertion, removal, over-current, voltage fault); programmable pull-up via INT_PULLUP bit. |
| LIA, LIB | DC/DC Converter Inputs | External inductor connections (10 µH typical) for step-up conversion; bypassable if VCC ≥ required CVCC + 0.3 V (regulator mode). |
| RESET | System Reset I/O | Open-drain input/output with Power-On Reset (POR) and Power-Fail Detect (PFD); samples A1/RST and A2/CK at rising edge for TWI address latching. |
Key Features
| Feature | Design Value |
|---|---|
| Multi-Standard Smart Card Support | Fully compliant with ISO 7816, EMV2000, GIE-CB, and GSM - eliminates need for external protocol translation logic. |
| Programmable Voltage per Interface | Independent 1.8 V / 3 V / 5 V selection per SCn via VCARDn[1:0] bits - enables mixed-voltage card stacks (e.g., SIM + payment card). |
| Automatic De-activation Sequence | Hardware-triggered shutdown on card extraction, power-fail, or over-current - prevents data corruption and ensures safe card ejection. |
| Low-Ripple Power Delivery | <200 mV ripple on CVCC outputs - meets stringent noise requirements for secure microcontroller communication on smart cards. |
| Configurable Clock Stop Modes | CCLKn stop-high or stop-low during card power-down - reduces dynamic power consumption without violating ISO timing constraints. |
Applications
| EMV Payment Terminal | GSM SIM Card Reader |
|---|---|
|
Use Scenario: Embedded point-of-sale terminal processing chip-based credit/debit cards with contact interface. IC Role / Device Role / Timing Role: Primary smart card interface managing ATR exchange, clock control, and voltage switching per EMV Level 1 requirements. Use Value: Enables simultaneous support for 5V (legacy) and 3V (modern) cards with automatic voltage detection and activation sequencing. |
Use Scenario: Multi-SIM module in IoT gateways requiring hot-swappable subscriber identity modules. IC Role / Device Role / Timing Role: Dual-role interface handling both SIM card presence detection and synchronous C4/C8 signaling for GSM authentication. Use Value: Integrates 4 SAM/SIM slots (15–30 mA each) with independent LDOs, eliminating discrete regulators and reducing BOM count by 7+ components. |
| Set-Top Box Conditional Access | Secure ID Card Reader |
|
Use Scenario: Pay-TV receiver validating subscriber entitlements via encrypted smart card (e.g., CI+ module). IC Role / Device Role / Timing Role: High-integrity card interface ensuring tamper-resistant clock and power delivery during cryptographic operations. Use Value: 4 kV ESD protection and low-noise CVCC outputs prevent glitch-induced faults during RSA key exchange or DES decryption. |
Use Scenario: Physical access control system reading government-issued eID cards (e.g., EU ePassport, national ID). IC Role / Device Role / Timing Role: ISO 7816-compliant reader providing precise T=0/T=1 protocol timing, ATR generation, and card reset synchronization. Use Value: Programmable activation sequence and card clock stop modes meet ICAO 9303 timing windows for biometric data transfer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar smart card interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST8020S | Single smart card interface; no integrated DC/DC; requires external 1.8/3/5 V regulators. | Limited to one card slot; lacks automatic de-activation and synchronous C4/C8 support. | Choose ST8020S only for cost-sensitive single-card designs where external power management is already present. |
| SLB9670 | TPM 2.0 security controller with embedded smart card interface; supports only T=1 protocol; no C4/C8 capability. | Designed for trusted platform modules, not general-purpose card readers; no multi-slot or EMV support. | Select SLB9670 when hardware-rooted trust and cryptographic acceleration are required alongside basic card I/O. |
Compared with ST8020S and SLB9670, AT83C26-RKRUL uniquely combines five ISO 7816 interfaces, integrated multi-voltage DC/DC conversion, and EMV/GSM synchronous support - making it the only option for compact, multi-card, standards-compliant reader designs without external power ICs.
Availability
AT83C26-RKRUL is available at Aetrix Electronics and suitable for EFT/POS terminals, set-top box conditional access modules, and secure ID card readers requiring stable component supply, long-term lifecycle assurance, and industrial temperature operation.
Supply support for AT83C26-RKRUL 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
Microchip Technology is a global semiconductor company specializing in microcontrollers, analog devices, and security ICs, with leadership in embedded control and secure authentication solutions.
The AT83C26-RKRUL belongs to Microchip's smart card interface product line, engineered specifically for high-reliability, multi-standard card reader applications in financial transaction, telecom, and identity verification systems.
FAQ
What is the maximum number of smart cards supported by the AT83C26-RKRUL?
The AT83C26-RKRUL supports up to five smart card interfaces: one dedicated SC1 interface powered by DC/DC A, and four additional interfaces (SC2–SC5) powered by DC/DC B and its four LDOs. Due to shared pins between SC2 and SC3, users must configure SC2_FULL to select either full SC2 (with CC4/CC8) or SC3 - limiting concurrent full interfaces to four. AT83C26-RKRUL thus enables true 4-slot operation with synchronous card support or 5-slot with SC3 as simplified interface.
Does the AT83C26-RKRUL support EMV Level 1 certification requirements?
Yes, the AT83C26-RKRUL supports EMV Level 1 certification through ISO 7816-3 compliance, programmable voltage classes (Class A/B/C), automatic activation/deactivation sequences, 4 kV ESD protection on card pins, and precise CCLK timing control including stop-high/stop-low modes. Its integrated DC/DC converters ensure stable CVCC under load transients, and the hardware-managed card reset (ART mode) meets EMV timing windows for ATR generation. AT83C26-RKRUL implements all mandatory electrical and protocol-level functions defined in EMV Book 1 Annex A.
How does the AT83C26-RKRUL handle power failure during smart card operation?
The AT83C26-RKRUL incorporates a dedicated Power-Fail Detector (PFD) that triggers immediate, controlled de-activation of all smart card interfaces upon VCC drop below threshold. This initiates automatic card reset, clock stop, and CVCC ramp-down to prevent data corruption or card latch-up. The PFD works independently of host software and coordinates with POR and over-current protection to ensure fail-safe shutdown - critical for secure financial transactions. AT83C26-RKRUL guarantees clean power removal even during mid-ATR or APDU exchange.
Can the AT83C26-RKRUL operate with a 1.8 V host microcontroller?
Yes, the AT83C26-RKRUL supports mixed-voltage operation: its EVCC pin accepts 1.8 V to 5.5 V for host interface level-shifting, allowing direct connection to 1.8 V MCUs. SCL/SDA pins are open-drain with programmable internal pull-up (via INT_PULLUP bit), and IO1/IO2/AUX1/AUX2 are 5 V-tolerant inputs when EVCC = 1.8 V. However, VCC must remain ≥3.0 V to power internal regulators and smart card outputs. AT83C26-RKRUL thus enables low-power host integration without external level shifters.
What package options are available for the AT83C26-RKRUL?
The AT83C26-RKRUL is offered in two pin-compatible, RoHS-compliant packages: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch) and 48-pin VQFP (7 mm × 7 mm, 0.5 mm pitch). Both packages feature identical pinouts, thermal pad (QFN) or exposed pad (VQFP), and electrical characteristics. The dual CVCC1 and CVCCB pins in each package reduce supply noise, while the compact footprint supports high-density PCB layouts in space-constrained POS terminals. AT83C26-RKRUL's package selection is driven solely by assembly preference and thermal requirements.
AT83C26-RKRUL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- -
- Interface:
- 2-Wire
- Voltage - Supply:
- 3V ~ 5.5V
- Supplier Device Package:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
AT83C26-RKRUL FAQ
1.How can I place an order for AT83C26-RKRUL through Aetrix?
Please submit a Request for Quotation (RFQ) for AT83C26-RKRUL 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 AT83C26-RKRUL reliable?
The price and inventory of AT83C26-RKRUL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT83C26-RKRUL is usually 5 days.
3.What payment methods are accepted for AT83C26-RKRUL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT83C26-RKRUL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT83C26-RKRUL?
AT83C26-RKRUL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT83C26-RKRUL 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 AT83C26-RKRUL?
For technical support, including AT83C26-RKRUL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT83C26-RKRUL requirements.
6.How does Aetrix verify that AT83C26-RKRUL is sourced from the original manufacturer or authorized distributors?
All AT83C26-RKRUL 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 AT83C26-RKRUL meets industry standards.
7.What is the process for return or replacement of AT83C26-RKRUL?
All AT83C26-RKRUL units undergo pre-shipment inspection (PSI). If there is an issue with AT83C26-RKRUL, 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 AT83C26-RKRUL part is unused and in its original packaging.
Return procedure for AT83C26-RKRUL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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