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| EEPROMs MN63121 1K-Bit EEPROM Overview The MN63121 is a 1K-bit EEPROM supporting serial I/O and operating on a single power supply with a voltage between 1.8 and 5.5 V. It provides the following pins for easy interfacing to microprocessors or microcontrollers: chip select (CS), serial clock (SCK), data input (DI), data output (DO), reset (RESET), and busy (RDY/BUSY). It includes a built-in timer for use in automatically erasing and writing data during data update operations. The memory organization is 64 x 16 bits. The chip indicates the end of a write operation with either the RDY/ BUSY pin or the state of the DO pin after the status output mode has been set. Conversion of peripheral circuits to CMOS realizes great reductions in power consumption. Use of floating gate memory cells and a built-in error correction circuit ensures reliable operation for 105 write cycles. Pin Assignment CS SCK DI DO 1 2 3 4 8 7 6 5 VCC RDY/BUSY RESET GND ( TOP VIEW ) DIP008-P-0300A Features Memory organization: 64 x 16 bits Floating gate memory cells Function blocking erroneous writes Low power consumption - Reads: max. 6.6 mW for VCC = 3.3 V - Standby: max. 66 W for VCC = 3.3 V Built-in self-timer for use in automatically erasing and writing Built-in error correction circuit that guarantees 105 write cycles 10-year data preservation period Applications Keyless entry systems, cordless telephones, storage for recognition and adjustment data for terminals, etc. 1 MN63121 Block Diagram EEPROMs 8 Memory array 64 x 16 5 GND VCC Address decoder Error correction circuit Data register 3 Output buffer DI RESET CS 6 1 Mode decode logic SCK 2 Clock generator 7 4 DO 2 RDY/BUSY EEPROMs Pin Descriptions Pin No. 1 2 3 4 6 7 Symbol CS SCK DI DO RESET RDY/BUSY Pin Name Chip select input Serial clock input Data input Data output Reset input Busy output MN63121 Electrical Characteristics VCC=1.8 to 5.5V, Ta=-10C to +70C 2 to 3 V Operation 5 V Operation Parameter Power supply voltage Input leakage current at "L" level Input leakage current at "H" level Output leakage current Input voltage at "L" level Input voltage at "H" level VCC power supply current (during operation) VCC power supply current (during standby) Output voltage for "L" level (during reads) Output voltage for "H" level (during reads) Symbol VCC ILIL ILIH ILO VIL VIH ICC ISB Test Conditions min 1.8 -10 -10 -- - 0.1 0.8 x VCC max 3.3 10 10 10 0.2 x VCC VCC +0.3 2.0 -- 20 min 4.5 -10 -10 -- - 0.1 3.0 -- -- -- max 5.5 10 10 10 0.7 VCC +0.3 -- 3.0 30 Unit V A A A V V mA A SCK=250kHz SCK=1MHz CS, SCK, DI, RESET="H" Other pins open IOL=400 A IOL=2.1mA IOH=-10 A IOH=-400 A -- -- -- VOL -- -- VCC - 0.3 -- 0.3 -- -- -- -- -- -- 2.4 -- 0.45 -- -- V V VOH Function Descriptions Orders READ WRITE EWEN EWDS BUSYFG ENFG ECCFG Note: x means "don't care". Code 10101000 10100100 10100011 10100000 Address A0A1A2A3A4A500 A0A1A2A3A4A500 xxxxxxxx xxxxxxxx 00xxxxxx 10xxxxxx 01xxxxxx Data D0 -D7D8-D15 D0 -D7D8-D15 ---- ---- 0(busy) 1(ready) 0(enable) 1(disable) 0(non-correction) 1(correction) Function Read from address indicated with pins A0 -A5 Write to address indicated with pins A0 -A5 Enable erase/write Disable erase/write Status output busy flag Status output write enable flag Status output ECC flag 10101001 3 MN63121 Package Dimensions (Unit:mm) DIP008-P-0300A EEPROMs 8 5 6.400.20 7.620.20 SEATING PLANE 1 9.600.40 4 4.80 max. 3.450.30 2.54 0.500.10 0.700.10 1.300.10 4 0.70 min. 3.300.20 5 0 to 1 0.25 -0.05 +0.20 |
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