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Features
General
* High-performance, Low-power secureAVR(R) RISC Architecture * * * * * *
- 135 Powerful Instructions (Most Executed in a Single Clock Cycle) Low Power Idle and Power-down Modes Bond Pad Locations Conforming to ISO 7816-2 ESD Protection to 6000V Operating Ranges: 1.62 to 5.5V Compliant with GSM, 3GPP and EMV 2000 Specifications; PC Industry Compatible Available in Wafers, Modules, QFN44 and SOIC8 packages
Memory
* 256K Bytes of ROM Program Memory * 72K Bytes of EEPROM, Including 128 OTP Bytes and 384-byte Bit-addressable Area
- 1 to 128-byte Program / Erase - 1.25 ms Program / 1.25 ms Erase - Typically More than 500,000 Write/Erase Cycles at a Temperature of 25oC - 10 Years Data Retention - EEPROM Erase Only Mode - Write EEPROM With or Without Autoerase * 8K Bytes of RAM * 32K Bytes of ROM Dedicated to Atmel's Crypto-library
Secure Microcontroller for Smart Cards AT90SC25672RCT -USB Summary
Peripherals
* ISO 7816 Controller * * * * * * * * * * *
- Up to 625 kbps at 5 MHz - Compliant with T = 0 and T = 1 Protocols One I/O Port USB 2.0 Full Speed interface with 5 endpoints and DMA controller Programmable Internal Oscillator (Up to 40 MHz for CPU and Crypto Accelerator) Two 16-bit Timers Random Number Generator (RNG) 2-level, 9-vector Interrupt Controller Hardware DES and Triple DES DPA/DEMA Resistant Checksum Accelerator CRC 16 & 32 Engine (Compliant with ISO/IEC 3309) 32-bit AdvXTM Cryptographic Accelerator for Public Key Operations with GF(2n) Multiplier and Firmware (RSA, ECC, Key Generation)
Security
* * * * * * * *
Dedicated Hardware for Protection Against SPA/DPA Attacks Advanced Protection Against Physical Attack, Including Active Shield Environmental Protection Systems Voltage Monitor Frequency Monitor Light Protection Temperature Monitor Secure Memory Management/Access Protection (Supervisor Mode)
Certification
* * * *
CC EAL4+ VISA CAST USB 2.0
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Note: This is a summary document. A complete document will be available under NDA. For more information, please contact your local Atmel sales office.
Development Tools
* Voyager Emulation Platform (ATV4 Standard) to Support Software Development * IAR Systems EWAVR(R) V4.21A Debugger or Above * Software Libraries and Application Notes
Description
The AT90SC25672RCT-USB is a low-power, high-performance, 8/16-bit microcontroller with ROM program memory, EEPROM data memory, cryptographic accelerator based on the secureAVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the AT90SC25672RCT-USB achieves throughputs close to 1 MIPS per MHz. Its Harvard architecture includes 32 general purpose working registers directly connected to the ALU, allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The AT90SC25672RCT-USB uses a new AVR(R) architecture, the secureAVR that allows the linear addressing of up to 8M bytes of code and up to 16M bytes of data as well as a number of new functional and security features. The cryptographic accelerator featured in this product is the AdvX, a 32-bit accelerator dedicated to performing fast encryption and authentication functions. It is combined with a 32K byte-ROM for a high-performance and secure crypto firmware. The ability to map the EEPROM in the code space allows parts of the program memory to be reprogrammed in-system. This technology combined with the versatile 8/16-bit CPU on a monolithic chip provides a highly flexible and cost-effective solution to many smart card applications. Additional security features include power and frequency protection logic, logical scrambling on program data and addresses, Power Analysis countermeasures and memory accesses controlled by a supervisor mode. A block diagram of the AT90SC25672RCT-USB is shown in Figure 1 hereafter.
USB Controller Description
The AT90SC25672RCT-USB features an USB V2.0 Full Speed controller which requires a 48 MHz external crystal for the data transfer. The USB interface consists of a Serial Interface Engine (SIE) and a Universal Function Interface (UFI). The SIE performs clock/data separation, NRZI encoding and decoding, bit stuffing, CRC generation and checking and serialparallel data conversion. The UFI connects the USB interface to the AVR. It consists of a protocol engine and provides five configurable data transfer endpoints, each with its own DPRAM in the memory area. The data transfer type for each endpoint is configured by software. The table below indicates the characteristics of each endpoint:
Table 1: Characteristics of each endpoint.
Endpoint number EP0 EP1 EP2 EP3 EP4 Size (bytes) 64 2 * 64 2 * 64 64 64 Available data transfer modes BULK, ISOCHRONOUS, INTERRUPT, CONTROL BULK, ISOCHRONOUS, INTERRUPT BULK, ISOCHRONOUS, INTERRUPT BULK, ISOCHRONOUS, INTERRUPT, CONTROL BULK, ISOCHRONOUS, INTERRUPT, CONTROL
A DMA controller allows a fast communication rate between the RAM of the CPU and the DPRAM. The USB controller provides a dynamic pull-up attachment and detachment and a host detection mechanism. In addition, it offers an automatic interface detection between the USB 2.0 and the ISO7816 port. 2
AT90SC25672RCT-USB
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AT90SC25672RCT-USB
Figure 1. AT90SC25672RCT -USB secureAVR RISC Architecture
Data Bus 8-bit OTP EEPROM User Memory CRYPTO ROM Program Memory 16 Instruction Register 16 8 Instruction Decoder 16 Control Lines Status Register 8 General Purpose Registers X
Y Z USBDM USBDP XIN XOUT CLK GND
Access Control
USB Module
RNG
Secure Control
VCC / VBus
PC
Access Control 8
AdvX CryptoCoprocessor
ALU
RAM Data Memory Interrupt Unit ISO 7816 Controller ISO 7816 I/O Port 0 Timer 0 Timer 1 DES DPA Counter measures CRC and Checksum Accelerator Reset Circuit RST
IN/OUT0
A DMA controller allows a fast communication rate between the RAM of the CPU and the DPRAM.
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Figure 2. Pinout AT90SC25672RCT-USB - Package QFN44
USB_DM
35
USB_DP
NC
NC
NC
NC
37
44
42
41
39
38
36
43
40
34
NC
NC
NC
NC
NC
NC ISO_CLK USB_XOUT NC USB_XIN ISO_RST NC NC NC VCC / VBUS NC
1 2 3 4 5 6 7 8 9 10 11 15 16 17 14 18 13 12 19 20 21 22
33 32
NC NC ISO_IO0 / GPIO NC NC NC NC NC NC GND NC
INDEX CORNER
31 30 29 28 27 26 25 24 23
AT90SC25672RCT-USB
(44-lead QFN top view)
NC
NC
NC
NC
NC
4
AT90SC25672RCT-USB
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NC
NC
NC
NC
NC
NC
AT90SC25672RCT-USB
Figure 3. Pinout AT90SC25672RCT-USB - Package SOIC8 - ISO Mode
GND
1
INDEX CORNER
8
VCC
NC
2
AT90SC25672RCT-USB SOIC8
7
ISO_RST
ISO_IO0
3
6
NC
NC
4
5
ISO_CLK
Figure 4. Pinout AT90SC25672RCT-USB - Package SOIC8 - USB Mode
GND
1
INDEX CORNER
8
VBUS
NC
2
AT90SC25672RCT-USB SOIC8
7
USB_XIN
GPIO
3
6
USB_XOUT
USB_DM
4
5
USB_DP
5
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Figure 5. Quad Flat No Lead Package, 44 Leads
6
AT90SC25672RCT-USB
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AT90SC25672RCT-USB
Figure 6. Plastic Small Outline Package - 8-lead - 0.209" Body
C
1
E
E1
N
L
?
Top View
End View
e A A1
SYMBOL
b
COMMON DIMENSIONS (Unit of Measure = mm) MIN NOM MAX NOTE
A A1
1.70 0.05 0.35 0.15 5.13 5.18 7.70 0.51 0 1.27 BSC
2.16 0.25 0.48 0.35 5.35 5.40 8.26 0.85 8 4 2, 3 5 5
D
b C D E1 E L
?
Side View
e
Notes: 1. 2. 3. 4. 5.
This drawing is for general information only; refer to EIAJ Drawing EDR-7320 for additional information. Mismatch of the upper and lower dies and resin burrs are not included. It is recommended that upper and lower cavities be equal. If they are different, the larger dimension shall be regarded. Determines the true geometric position. Values b and C apply to pb/Sn solder plated terminal. The standard thickness of the solder layer shall be 0.010 +0.010/-0.005 mm.
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AT90SC25672RCT-USB
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6522DS-SPD-07Sep07

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