Features • Low-voltage and Standard-voltage Operation • • • • • • • – 2.7 (VCC = 2.7V to 5.5V) – 1.8 (VCC = 1.8V to 5.5V) User-selectable Internal Organization – 1K: 128 x 8 or 64 x 16 Three-wire Serial Interface 2 MHz Clock Rate (5V) Self-timed Write Cycle (10 ms max) High Reliability – Endurance: 1 Million Write Cycles – Data Retention: 100 Years Automotive Grade Devices Available 8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead Ultra Thin mini-MAP (MLP 2x3), 8-lead TSSOP and 8-ball dBGA2 Packages Description Three-wire Serial EEPROM 1K (128 x 8 or 64 x 16) The AT93C46 provides 1024 bits of serial electrically erasable programmable readonly memory (EEPROM), organized as 64 words of 16 bits each (when the ORG pin is connected to VCC), and 128 words of 8 bits each (when the ORG pin is tied to ground). The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operations are essential. The AT93C46 is available in space-saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead Ultra Thin mini-MAP (MLP 2x3), 8-lead TSSOP, and 8-lead dBGA2 packages. AT93C46 Note: Not recommended for new design; please refer to AT93C46D datasheet. The AT93C46 is enabled through the Chip Select pin (CS) and accessed via a three-wire serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock (SK). Upon receiving a Read instruction at DI, the address is decoded and the data is clocked out serially on the DO pin. The Write cycle is completely self-timed, and no separate Erase cycle is required before Write. The Write cycle is only enabled when the part is in the Erase/Write Enable state. When CS is brought high following the initiation of a Write cycle, the DO pin outputs the Ready/Busy status of the part. The AT93C46 is available in 2.7V to 5.5V and 1.8V to 5.5V versions. Table 1. Pin Configurations Pin Name Function CS Chip Select SK Serial Data Clock DI Serial Data Input DO Serial Data Output GND Ground VCC Power Supply ORG Internal Organization DC Don’t Connect 8-lead SOIC CS SK DI DO 1 2 3 4 8-lead dBGA2 VCC DC ORG GND VCC DC ORG GND 8 7 6 5 8 1 7 2 6 3 5 4 CS SK D1 D0 Bottom View 8-lead PDIP CS SK DI DO 1 2 3 4 8 7 6 5 VCC DC ORG GND 8-lead SOIC Rotated (R) (1K JEDEC Only) DC VCC CS SK 1 2 3 4 ORG GND DO DI 8 7 6 5 8-lead Ultra Thin mini-MAP (MLP 2x3) 8-lead TSSOP VCC DC ORG GND 8 1 7 2 6 3 5 4 CS SK DI DO CS SK DI DO 1 2 3 4 8 7 6 5 VCC DC ORG GND Bottom View 5140B–SEEPR–2/07 1 Absolute Maximum Ratings* Operating Temperature......................................−55°C to +125°C Storage Temperature .........................................−65°C to +150°C Voltage on Any Pin with Respect to Ground ........................................ −1.0V to +7.0V Maximum Operating Voltage .......................................... 6.25V DC Output Current........................................................ 5.0 mA *NOTICE: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability Figure 1. Block Diagram Note: When the ORG pin is connected to VCC, the “x 16” organization is selected. When it is connected to ground, the “x 8” organization is selected. If the ORG pin is left unconnected and the application does not load the input beyond the capability of the internal 1 Meg ohm pullup, then the “x 16” organization is selected. The feature is not available on the 1.8V devices. For the AT93C46, if “x 16” organization is the mode of choice and Pin 6 (ORG) is left unconnected, Atmel recommends using the AT93C46A device. For more details, see the AT93C46A datasheet. 2 AT93C46 5140B–SEEPR–2/07 AT93C46 Table 2. Pin Capacitance(1) Applicable over recommended operating range from TA = 25°C, f = 1.0 MHz, VCC = +5.0V (unless otherwise noted) Symbol Test Conditions COUT CIN Note: Max Units Conditions Output Capacitance (DO) 5 pF VOUT = 0V Input Capacitance (CS, SK, DI) 5 pF VIN = 0V 1. This parameter is characterized and is not 100% tested. Table 3. DC Characteristics Applicable over recommended operating range from: TAI = −40°C to +85°C, VCC = +1.8V to +5.5V, TAE = -40°C to +125°C, VCC = +1.8V to +5.5V (unless otherwise noted) Symbol Parameter VCC1 Supply Voltage VCC2 Test Condition Min Typ Max Unit 1.8 5.5 V Supply Voltage 2.7 5.5 V VCC3 Supply Voltage 4.5 5.5 V ICC Supply Current VCC = 5.0V ISB1 Standby Current VCC = 1.8V ISB2 Standby Current ISB3 READ at 1.0 MHz 0.5 2.0 mA WRITE at 1.0 MHz 0.5 2.0 mA CS = 0V 0 0.1 µA VCC = 2.7V CS = 0V 6.0 10.0 µA Standby Current VCC = 5.0V CS = 0V 17 30 µA IIL Input Leakage VIN = 0V to VCC 0.1 1.0 µA IOL Output Leakage VIN = 0V to VCC 0.1 1.0 µA VIL1(1) Input Low Voltage VIH1(1) Input High Voltage VIL2(1) Input Low Voltage VIH2(1) Input High Voltage VOL1 Output Low Voltage VOH1 Output High Voltage VOL2 Output Low Voltage VOH2 Output High Voltage Note: 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 2.7V 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 2.7V −0.6 0.8 2.0 VCC + 1 −0.6 VCC x 0.3 VCC x 0.7 VCC + 1 IOL = 2.1 mA IOH = −0.4 mA 0.4 2.4 IOL = 0.15 mA IOH = −100 µA V V V 0.2 VCC – 0.2 V V V 1. VIL min and VIH max are reference only and are not tested. 3 5140B–SEEPR–2/07 Table 4. AC Characteristics Applicable over recommended operating range from TAI = −40°C to + 85°C, VCC = As Specified, CL = 1 TTL Gate and 100 pF (unless otherwise noted) Symbol Parameter Test Condition fSK SK Clock Frequency 4.5V ≤ VCC ≤ 5.5V 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 5.5V 0 0 0 tSKH SK High Time 4.5V ≤ VCC ≤ 5.5V 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 5.5V 250 250 1000 ns tSKL SK Low Time 4.5V ≤ VCC ≤ 5.5V 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 5.5V 250 250 1000 ns tCS Minimum CS Low Time 4.5V ≤ VCC ≤ 5.5V 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 5.5V 250 250 1000 ns tCSS CS Setup Time Relative to SK 4.5V ≤ VCC ≤ 5.5V 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 5.5V 50 50 200 ns tDIS DI Setup Time Relative to SK 4.5V ≤ VCC ≤ 5.5V 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 5.5V 100 100 400 ns tCSH CS Hold Time Relative to SK 0 ns tDIH DI Hold Time Relative to SK 4.5V ≤ VCC ≤ 5.5V 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 5.5V 100 100 400 ns tPD1 Output Delay to “1” AC Test 4.5V ≤ VCC ≤ 5.5V 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 5.5V 250 250 1000 ns tPD0 Output Delay to “0” AC Test 4.5V ≤ VCC ≤ 5.5V 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 5.5V 250 250 1000 ns tSV CS to Status Valid AC Test 4.5V ≤ VCC ≤ 5.5V 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 5.5V 250 250 1000 ns tDF CS to DO in High Impedance AC Test CS = VIL 4.5V ≤ VCC ≤ 5.5V 2.7V ≤ VCC ≤ 5.5V 1.8V ≤ VCC ≤ 5.5V 100 100 400 ns tWP Write Cycle Time 10 ms (1) Endurance Note: 4 Min 4.5V ≤ VCC ≤ 5.5V 5.0V, 25°C 0.1 1M Typ 3 Max Units 2 1 0.25 MHz ms Write Cycles 1. This parameter is characterized and is not 100% tested. AT93C46 5140B–SEEPR–2/07 AT93C46 Table 5. Instruction Set for the AT93C46 Address Data SB Op Code x8 x 16 READ 1 10 A6 – A0 A5 – A0 Reads data stored in memory, at specified address EWEN 1 00 11XXXXX 11XXXX Write enable must precede all programming modes ERASE 1 11 A6 – A0 A5 – A0 Erases memory location An – A0 WRITE 1 01 A6 – A0 A5 – A0 ERAL 1 00 10XXXXX 10XXXX WRAL 1 00 01XXXXX 01XXXX 1 00 00XXXXX 00XXXX Instruction EWDS Note: x8 D7 – D0 x 16 D15 – D0 Comments Writes memory location An – A0 Erases all memory locations. Valid only at VCC = 4.5V to 5.5V D7 – D0 D15 – D0 Writes all memory locations. Valid only at VCC = 4.5V to 5.5V Disables all programming instructions The Xs in the address field represent DON’T CARE values and must be clocked. Functional Description The AT93C46 is accessed via a simple and versatile three-wire serial communication interface. Device operation is controlled by seven instructions issued by the host processor. A valid instruction starts with a rising edge of CS and consists of a start bit (logic “1”) followed by the appropriate op code and the desired memory address location. READ (READ): The Read (READ) instruction contains the address code for the memory location to be read. After the instruction and address are decoded, data from the selected memory location is available at the serial output pin DO. Output data changes are synchronized with the rising edges of serial clock SK. It should be noted that a dummy bit (logic “0”) precedes the 8- or 16-bit data output string. ERASE/WRITE ENABLE (EWEN): To assure data integrity, the part automatically goes into the Erase/Write Disable (EWDS) state when power is first applied. An Erase/Write Enable (EWEN) instruction must be executed first before any programming instructions can be carried out. Please note that once in the EWEN state, programming remains enabled until an EWDS instruction is executed or VCC power is removed from the part. ERASE (ERASE): The Erase (ERASE) instruction programs all bits in the specified memory location to the logical “1” state. The self-timed erase cycle starts once the Erase instruction and address are decoded. The DO pin outputs the Ready/Busy status of the part if CS is brought high after being kept low for a minimum of 250 ns (tCS). A logic “1” at pin DO indicates that the selected memory location has been erased and the part is ready for another instruction. WRITE (WRITE): The Write (WRITE) instruction contains the 8 or 16 bits of data to be written into the specified memory location. The self-timed programming cycle tWP starts after the last bit of data is received at serial data input pin DI. The DO pin outputs the Read/Busy status of the part if CS is brought high after being kept low for a minimum of 250 ns (tCS). A logic “0” at DO indicates that programming is still in progress. A logic “1” indicates that the memory location at the specified address has been written with the data pattern contained in the instruction and the part is ready for further instructions. A Ready/Busy status cannot be obtained if the CS is brought high after the end of the selftimed programming cycle tWP. 5 5140B–SEEPR–2/07 ERASE ALL (ERAL): The Erase All (ERAL) instruction programs every bit in the memory array to the logic “1” state and is primarily used for testing purposes. The DO pin outputs the Ready/Busy status of the part if CS is brought high after being kept low for a minimum of 250 ns (tCS). The ERAL instruction is valid only at VCC = 5.0V ± 10%. WRITE ALL (WRAL): The Write All (WRAL) instruction programs all memory locations with the data patterns specified in the instruction. The DO pin outputs the Ready/Busy status of the part if CS is brought high after being kept low for a minimum of 250 ns (tCS). The WRAL instruction is valid only at VCC = 5.0V ± 10%. ERASE/WRITE DISABLE (EWDS): To protect against accidental data disturb, the Erase/Write Disable (EWDS) instruction disables all programming modes and should be executed after all programming operations. The operation of the Read instruction is independent of both the EWEN and EWDS instructions and can be executed at any time. Timing Diagrams Figure 2. Synchronous Data Timing µs Note: 1. This is the minimum SK period. Table 6. Organization Key for Timing Diagrams AT93C46 (1K) 6 I/O x8 x 16 AN A6 A5 DN D7 D15 AT93C46 5140B–SEEPR–2/07 AT93C46 Figure 3. READ Timing tCS High Impedance Figure 4. EWEN Timing tCS CS SK DI 1 0 0 1 1 ... Figure 5. EWDS Timing tCS CS SK DI 1 0 0 0 0 ... 7 5140B–SEEPR–2/07 Figure 6. WRITE Timing tCS CS SK DI DO 1 0 ... AN 1 A0 DN ... D0 HIGH IMPEDANCE BUSY READY tWP Figure 7. WRAL Timing(1) tCS CS SK 1 DI DO 0 0 0 1 ... DN ... D0 BUSY HIGH IMPEDANCE READY tWP Note: 1. Valid only at VCC = 4.5V to 5.5V. Figure 8. ERASE Timing tCS CS STANDBY CHECK STATUS SK DI 1 1 1 AN AN-1 AN-2 ... A0 tDF tSV DO HIGH IMPEDANCE HIGH IMPEDANCE BUSY READY tWP 8 AT93C46 5140B–SEEPR–2/07 AT93C46 Figure 9. ERAL Timing(1) tCS CS CHECK STATUS STANDBY tSV tDF SK DI DO 1 0 0 1 0 BUSY HIGH IMPEDANCE HIGH IMPEDANCE READY tWP Note: 1. Valid only at VCC = 4.5V to 5.5V. 9 5140B–SEEPR–2/07 AT93C46 Ordering Information(1) Ordering Code Package Operation Range 8P3 8P3 8S1 8S1 8S2 8S2 8A2 8A2 8Y1 8Y6 8U3-1 Lead-free/Halogen-free/ Industrial Temperature (−40°C to 85°C) Die Sale Industrial (−40°C to 85°C) (2) AT93C46-10PU-2.7 AT93C46-10PU-1.8(2) AT93C46-10SU-2.7(2) AT93C46-10SU-1.8(2) AT93C46W-10SU-2.7(2) AT93C46W-10SU-1.8(2) AT93C46-10TU-2.7(2) AT93C46-10TU-1.8(2) AT93C46Y1-10YU-1.8(2) (Not recommended for new designs) AT93C46Y6-10YH-1.8(3) AT93C46U3-10UU-1.8(2) AT93C46-W1.8-11(4) Notes: 1. For 2.7V devices used in the 4.5V to 5.5V range, please refer to performance values in the Table 3 on page 3 and Table 4 on page 4. Not recommended for new design. Please refer to AT93C46D datasheet. 2. “U” designates Green Package and RoHS compliant. 3. “H” designates Green Package and RoHS compliant, with NiPdAu Lead finish 4. Available in waffle pack and wafer form, order as SL788 for inkless wafer form. Bumped die available upon request. Package Type 8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP) 8S1 8-lead, 0.150" Wide, Plastic Gull Wing Small Outline (JEDEC SOIC) 8S2 8-lead, 0.200" Wide, Plastic Gull Wing Small Outline (EIAJ SOIC) 8A2 8-lead, 0.170" Wide, Thin Shrink Small Outline Package (TSSOP) 8U3-1 8-ball, Die Ball Grid Array Package (dBGA2) 8Y1 8-lead, 4.90 mm x 3.00 mm Body, Dual Footprint, Non-leaded, Miniature Array Package (MAP) 8Y6 8-lead, 2.00 mm x 3.00 mm Body, 0.50mm Pitch, Ultra-Thin Mini-MAO, Dual No Lead Package. (DFN), (MLP 2x3mm) Options −2.7 Low Voltage (2.7V to 5.5V) −1.8 Low Voltage (1.8V to 5.5V) R Rotated Pinout 10 AT93C46 5140B–SEEPR–2/07 AT93C46 Packaging Information 8P3 – PDIP E 1 E1 N Top View c eA End View COMMON DIMENSIONS (Unit of Measure = inches) D e D1 A2 A MIN NOM A2 0.115 0.130 0.195 b 0.014 0.018 0.022 5 b2 0.045 0.060 0.070 6 b3 0.030 0.039 0.045 6 c 0.008 0.010 0.014 D 0.355 0.365 0.400 D1 0.005 E 0.300 0.310 0.325 4 E1 0.240 0.250 0.280 3 SYMBOL A b2 b3 b 4 PLCS Side View L Notes: 0.210 0.100 BSC eA 0.300 BSC 0.115 NOTE 2 3 3 e L MAX 0.130 4 0.150 2 1. This drawing is for general information only; refer to JEDEC Drawing MS-001, Variation BA for additional information. 2. Dimensions A and L are measured with the package seated in JEDEC seating plane Gauge GS-3. 3. D, D1 and E1 dimensions do not include mold Flash or protrusions. Mold Flash or protrusions shall not exceed 0.010 inch. 4. E and eA measured with the leads constrained to be perpendicular to datum. 5. Pointed or rounded lead tips are preferred to ease insertion. 6. b2 and b3 maximum dimensions do not include Dambar protrusions. Dambar protrusions shall not exceed 0.010 (0.25 mm). 01/09/02 R 2325 Orchard Parkway San Jose, CA 95131 TITLE 8P3, 8-lead, 0.300" Wide Body, Plastic Dual In-line Package (PDIP) DRAWING NO. REV. 8P3 B 11 5140B–SEEPR–2/07 8S1 – JEDEC SOIC C 1 E E1 L N ∅ Top View End View e B COMMON DIMENSIONS (Unit of Measure = mm) A SYMBOL A1 D Side View MIN NOM MAX A 1.35 – 1.75 A1 0.10 – 0.25 b 0.31 – 0.51 C 0.17 – 0.25 D 4.80 – 5.00 E1 3.81 – 3.99 E 5.79 – 6.20 e NOTE 1.27 BSC L 0.40 – 1.27 ∅ 0˚ – 8˚ Note: These drawings are for general information only. Refer to JEDEC Drawing MS-012, Variation AA for proper dimensions, tolerances, datums, etc. 10/7/03 R 12 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TITLE 8S1, 8-lead (0.150" Wide Body), Plastic Gull Wing Small Outline (JEDEC SOIC) DRAWING NO. 8S1 REV. B AT93C46 5140B–SEEPR–2/07 AT93C46 8S2 – EIAJ SOIC C 1 E E1 L N Top View ∅ End View e b COMMON DIMENSIONS (Unit of Measure = mm) A SYMBOL A1 D Side View NOM MAX NOTE A 1.70 2.16 A1 0.05 0.25 b 0.35 0.48 5 C 0.15 0.35 5 D 5.13 5.35 E1 5.18 5.40 E 7.70 8.26 L 0.51 0.85 ∅ 0˚ 8˚ e Notes: 1. 2. 3. 4. 5. MIN 1.27 BSC 2, 3 4 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. 10/7/03 R 2325 Orchard Parkway San Jose, CA 95131 TITLE 8S2, 8-lead, 0.209" Body, Plastic Small Outline Package (EIAJ) DRAWING NO. 8S2 REV. C 13 5140B–SEEPR–2/07 8A2 – TSSOP 3 2 1 Pin 1 indicator this corner E1 E L1 N L Top View End View COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL A b D MIN NOM MAX NOTE 2.90 3.00 3.10 2, 5 3, 5 E e D A2 6.40 BSC E1 4.30 4.40 4.50 A – – 1.20 A2 0.80 1.00 1.05 b 0.19 – 0.30 e Side View L 0.65 BSC 0.45 L1 Notes: 0.60 0.75 1.00 REF 1. This drawing is for general information only. Refer to JEDEC Drawing MO-153, Variation AA, for proper dimensions, tolerances, datums, etc. 2. Dimension D does not include mold Flash, protrusions or gate burrs. Mold Flash, protrusions and gate burrs shall not exceed 0.15 mm (0.006 in) per side. 3. Dimension E1 does not include inter-lead Flash or protrusions. Inter-lead Flash and protrusions shall not exceed 0.25 mm (0.010 in) per side. 4. Dimension b does not include Dambar protrusion. Allowable Dambar protrusion shall be 0.08 mm total in excess of the b dimension at maximum material condition. Dambar cannot be located on the lower radius of the foot. Minimum space between protrusion and adjacent lead is 0.07 mm. 5. Dimension D and E1 to be determined at Datum Plane H. 5/30/02 R 14 4 2325 Orchard Parkway San Jose, CA 95131 TITLE 8A2, 8-lead, 4.4 mm Body, Plastic Thin Shrink Small Outline Package (TSSOP) DRAWING NO. 8A2 REV. B AT93C46 5140B–SEEPR–2/07 AT93C46 8U3-1 – dBGA2 E D 1. b A1 PIN 1 BALL PAD CORNER A2 Top View A Side View PIN 1 BALL PAD CORNER 1 2 3 4 8 7 6 5 (d1) d e COMMON DIMENSIONS (Unit of Measure = mm) (e1) Bottom View 8 SOLDER BALLS 1. Dimension “b” is measured at the maximum solder ball diameter. This drawing is for general information only. SYMBOL MIN NOM MAX A 0.71 0.81 0.91 A1 0.10 0.15 0.20 A2 0.40 0.45 0.50 b 0.20 0.25 0.30 D NOTE 1.50 BSC E 2.00 BSC e 0.50 BSC e1 0.25 REF d 1.00 BSC d1 0.25 REF 6/24/03 R 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TITLE 8U3-1, 8-ball, 1.50 x 2.00 mm Body, 0.50 mm pitch, Small Die Ball Grid Array Package (dBGA2) DRAWING NO. REV. PO8U3-1 A 15 5140B–SEEPR–2/07 8Y6 – Mini-MAP D2 A b (8X) E E2 Pin 1 Index Area Pin 1 ID L (8X) D A2 e (6X) A1 1.50 REF. A3 COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN D 2.00 BSC E 3.00 BSC D2 1.40 1.50 MAX - - 1.40 A - - 0.60 A1 0.0 0.02 0.05 A2 - - 0.55 L 0.20 REF 0.20 e b NOTE 1.60 E2 A3 Notes: NOM 0.30 0.40 0.50 BSC 0.20 0.25 0.30 2 1. This drawing is for general information only. Refer to JEDEC Drawing MO-229, for proper dimensions, tolerances, datums, etc. 2. Dimension b applies to metallized terminal and is measured between 0.15 mm and 0.30 mm from the terminal tip. If the terminal has the optional radius on the other end of the terminal, the dimension should not be measured in that radius area. 8/26/05 R 16 2325 Orchard Parkway San Jose, CA 95131 DRAWING NO. TITLE 8Y6, 8-lead 2.0 x 3.0 mm Body, 0.50 mm Pitch, Utlra Thin Mini-Map, 8Y6 Dual No Lead Package (DFN) ,(MLP 2x3) REV. C AT93C46 5140B–SEEPR–2/07 AT93C46 Revision History Doc. Rev. Date Comments 5140B 2/2007 Implemented revision history. Added note to page 1 and ordering information; ‘Not recommended for new design; please refer to AT93C46D datasheet’. 17 5140B–SEEPR–2/07 Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Regional Headquarters Europe Atmel Sarl Route des Arsenaux 41 Case Postale 80 CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500 Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Atmel Operations Memory 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 Microcontrollers 2325 Orchard Parkway San Jose, CA 95131, USA Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 La Chantrerie BP 70602 44306 Nantes Cedex 3, France Tel: (33) 2-40-18-18-18 Fax: (33) 2-40-18-19-60 ASIC/ASSP/Smart Cards Zone Industrielle 13106 Rousset Cedex, France Tel: (33) 4-42-53-60-00 Fax: (33) 4-42-53-60-01 RF/Automotive Theresienstrasse 2 Postfach 3535 74025 Heilbronn, Germany Tel: (49) 71-31-67-0 Fax: (49) 71-31-67-2340 1150 East Cheyenne Mtn. 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