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| IC Card EEPROMs MN63151 EEPROM for IC Cards Overview The MN63151 is an EEPROM for use in IC cards. It features security features and an address specification system using opcode input. Low cost combined with high security makes the chips ideal for use in prepaid cards and other types of IC cards. Pad Assignment GND 1 5 4 VDD RST CLK Features Easy-to-use control system * Address specification system using opcode input over a 3-wire interface (CLK, I/O, and RST) * Automatic erasing and writing using a single 5 volt power supply Flexible memory-layout The memory is divided into 11 areas. Six areas containing 116 bytes are freely available. Advanced security features * Verification of IC card authenticity The IC passes entered data through a random number generator circuit on its way to output to provide a check of card validity. * Protection against malicious experimentation Four or more unsuccessful attempts to access the IC card render it permanently unusable. * Protection of individual memory areas on the card Read or write access to a memory area requires matches for both security and condition codes. There is also a condition code for permanently disabling re-writes. * Mixed configuration of EPROM and EEPROM Individual areas consist of EPROM or EEPROM. High reliability * Write cycles: 10,000 times * Data storage interval: 10 years I/O 2 3 (TOP VIEW) Note: This product is sold as wafers. Applications IC cards 1 MN63151 Block Diagram IC Card EEPROMs GND 1 Memory (64 x 16) Address decoder 5 VDD Data register Random number generator 3 CLK Mode decode-logic Data I/O buffer 2 I/O 4 RST 2 IC Card EEPROMs Pin Descriptions Pin No. 1 2 3 4 5 Symbol GND I/O CLK RST VDD Pin Name Ground Data I/O Clock Reset Power supply I/O Direction I I/O I I I MN63151 Electrical Characteristics VCC=4.5 to 5.5V, Ta=-10C to +70C Parameter Power supply voltage "L" level input leakage current "H" level input leakage current VCC power supply current (during operation) VCC power supply current (during standby) Symbol VCC ILIL ILIH ICC ISB Test Conditions min 4.5 -10 -10 max 5.5 10 10 5.45 0.18 Unit V A A mA mA VCC=5.5V CLK=800kHz CLK="L" I/O="H" -- -- Notes 1: I/O pins use N-channel, open drain configuration. 2: Input voltages, output voltages, and other items not listed above conform to ISO/IEC 7816-3. Function Descriptions Instruction READ WRITE VERIFY RNGEN RESET EWEN Start Bit 0 0 0 0 0 0 Operation Code 10 01 11 00 11 00 Address A5, A4-A0 A5, A4-A0 001010 001010 111111 1xxxxx Data D0, D1-D31 D0, D1-D15 D0, D1-D31 D0, D1-D31 DO0, DO1-DO31 -- -- Contents Read Write Verify code Verify code, generate random number Reset Enable write Note: x means "don't care". 3 MN63151 Memory Layout Area A B C D E F G H I1 I2 J K Contents Chip manufacturer's code Card manufacturer's code Spare area 1 Spare area 2 Spare area 3 Spare area 4 Security code Error counter Condition code 1 Condition code 2 Application area 1 Application area 2 IC Card EEPROMs Number of Bits 16 16 32 16 48 16 32 16 8 8 560 256 Memory Type EPROM EPROM EPROM EEPROM EPROM EEPROM EEPROM EEPROM EPROM EEPROM EPROM EEPROM Timing Chart CLK I/O Start bit and opcode Address Data Note: This product is sold as wafers. 4 |
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