EEPROMs MN63112S 2K-Bit EEPROM Overview The MN63112S is a 2K-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 (SK), data input (DI), and data output (DO). It includes a built-in timer for use in automatically erasing and writing data during data update operations. The ORG pin provides a choice of two memory organizations: 256 × 8 bits when ORG is connected to ground and 128 × 16 bits when ORG is connected to VCC. An internal pull-up resistor makes the latter the default configuration. 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 1 8 VCC SK 2 7 N.C. DI 3 6 ORG DO 4 5 GND ( TOP VIEW ) SOP008-P-0225 Features Choice of memory organizations: 256 × 8 bits and 128 × 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 µW 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 MN63112S EEPROMs 5 8 VCC GND Block Diagram Memory array ORG 6 128 × 16 or 256 × 8 Address decoder Error correction circuit Data register DI CS 1 2 Output buffer Mode decode logic Clock generator DO 4 SK 3 2 EEPROMs MN63112S Pin Descriptions Pin No. 1 Symbol CS Pin Name Chip select 2 SK Serial clock 3 DI Data input 4 DO 5 GND Ground Data output 6 ORG Memory configuration selection 7 N.C. No connection 8 VCC Power supply voltage Electrical Characteristics VCC=1.8V to 5.5V, Ta=–10˚C to +70˚C 2 to 3 V Operation 5 V Operation Parameter Symbol Power supply voltage VCC Input leakage current at "L" level ILIL Test Conditions Unit min max min max 1.8 3.3 4.5 5.5 V µA ORG pin –100 10 –150 10 Other pins –10 10 –10 10 Input leakage current at "H" level ILIH –10 10 –10 10 µA Output leakage current ILO — 10 — 10 µA Input voltage at "L" level VIL – 0.1 0.7 V Input voltage at "H" level ICC (during operation) VCC power supply current ISB VCC VCC +0.3 SK=250kHz — 2.0 — — SK=1MHz — — — 3.0 — 20 — 30 IOL=400 µA — 0.3 — — IOL=2.1mA — — — 0.45 — — — CS, SK, DI="L" (during standby) DO = open Output voltage for "L" level VOL (during reads) Output voltage for "H" level VOH IOH=–10 µA (during reads) VCC 0.8 × VIH VCC power supply current 0.2 × – 0.1 VCC – 0.3 IOH=–100 µA — — 3.0 VCC – 0.7 VCC V +0.3 mA µA V V — Function Descriptions Orders Start Bit Operation Code Address 256 × 8 128 × 16 Data 256 × 8 128 × 16 D7–D0 D15–D0 Contents READ 1 10 A7–A0 A6–A0 WRITE 1 01 A7–A0 A6–A0 Read EWEN 1 00 11xxxxxxx 11xxxxxx Enable erase/write EWDS 1 00 00xxxxxxx 00xxxxxx Disable erase/write Write Note: x means "don't care". 3 MN63112S EEPROMs Package Dimensions (Unit:mm) SEE DETAIL F SOP008-P-0225 1.50±0.20 5 0.60 1 4 SEATING PLANE 4.30±0.20 6.50±0.30 8 1.90 DETAIL F 1.10±0.20 5.00±0.20 1.27 SEATING PLANE 0.40±0.10 4 0.30