NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRE™ Synchronous Bus) General Description Features NM93C46 is a 1024-bit CMOS non-volatile EEPROM organized as 64 x 16-bit array. This device features MICROWIRE interface which is a 4-wire serial bus with chipselect (CS), clock (SK), data input (DI) and data output (DO) signals. This interface is compatible to many of standard Microcontrollers and Microprocessors. There are 7 instructions implemented on the NM93C46 for various Read, Write, Erase, and Write Enable/Disable operations. This device is fabricated using Fairchild Semiconductor floating-gate CMOS process for high reliability, high endurance and low power consumption. ■ Wide VCC 2.7V - 5.5V “LZ” and “L” versions of NM93C46 offer very low standby current making them suitable for low power applications. This device is offered in both SO and TSSOP packages for small space considerations. ■ Endurance: 1,000,000 data changes ■ Typical active current of 200µA 10µA standby current typical 1µA standby current typical (L) 0.1µA standby current typical (LZ) ■ No Erase instruction required before Write instruction ■ Self timed write cycle ■ Device status during programming cycles ■ 40 year data retention ■ Packages available: 8-pin SO, 8-pin DIP, 8-pin TSSOP Functional Diagram VCC CS INSTRUCTION DECODER CONTROL LOGIC AND CLOCK GENERATORS SK DI INSTRUCTION REGISTER HIGH VOLTAGE GENERATOR AND PROGRAM TIMER ADDRESS REGISTER DECODER EEPROM ARRAY 16 READ/WRITE AMPS VSS 16 DATA IN/OUT REGISTER 16 BITS DO © 2000 Fairchild Semiconductor International NM93C46 Rev. E DATA OUT BUFFER 1 www.fairchildsemi.com NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) February 2000 Dual-In-Line Package (N) 8–Pin SO (M8) and 8–Pin TSSOP (MT8) CS 1 8 SK 2 DI 3 Normal 7 Pinout DO 4 VCC NC 1 NC VCC 2 6 NC CS 3 5 GND SK 4 Rotated Pinout 8 NC 7 GND 6 DO 5 DI Top View Package Number N08E, M08A and MTC08 Pin Names CS Chip Select SK Serial Data Clock DI Serial Data Input DO Serial Data Output GND Ground NC No Connect VCC Power Supply NOTE: Pins designated as "NC" are typically unbonded pins. However some of them are bonded for special testing purposes. Hence if a signal is applied to these pins, care should be taken that the voltage applied on these pins does not exceed the VCC applied to the device. This will ensure proper operation. Ordering Information NM 93 C XX T LZ E XXX Letter Description Package N M8 MT8 8-pin DIP 8-pin SO 8-pin TSSOP Temp. Range None V E 0 to 70°C -40 to +125°C -40 to +85°C Voltage Operating Range Blank L LZ 4.5V to 5.5V 2.7V to 5.5V 2.7V to 5.5V and <1µA Standby Current Blank T Normal Pinout Rotated Pinout 46 1024 bits C CS CMOS Data protect and sequential read 93 MICROWIRE Density Interface Fairchild Memory Prefix 2 NM93C46 Rev. E www.fairchildsemi.com NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) Connection Diagram Operating Conditions Ambient Storage Temperature Ambient Operating Temperature NM93C46 NM93C46E NM93C46V All Input or Output Voltages with Respect to Ground Lead Temperature (Soldering, 10 sec.) -65°C to +150°C +6.5V to -0.3V +300°C ESD rating 0°C to +70°C -40°C to +85°C -40°C to +125°C Power Supply (VCC) 4.5V to 5.5V 2000V DC and AC Electrical Characteristics VCC = 4.5V to 5.5V unless otherwise specified Symbol Max Units ICCA Operating Current Parameter CS = VIH, SK=1.0 MHz Conditions Min 1 mA ICCS Standby Current CS = VIL 50 µA IIL IOL Input Leakage Output Leakage VIN = 0V to VCC (Note 2) ±-1 µA VIL VIH Input Low Voltage Input High Voltage 0.8 VCC +1 V 0.4 V 0.2 V 1 MHz -0.1 2 VOL1 VOH1 Output Low Voltage Output High Voltage IOL = 2.1 mA IOH = -400 µA 2.4 VOL2 VOH2 Output Low Voltage Output High Voltage IOL = 10 µA IOH = -10 µA VCC - 0.2 fSK SK Clock Frequency (Note 3) tSKH SK High Time 0°C to +70°C -40°C to +125°C tSKL 250 300 ns SK Low Time 250 ns tSKS SK Setup Time 50 ns tCS Minimum CS Low Time 250 ns tCSS CS Setup Time 100 ns tDH DO Hold Time 70 ns (Note 4) tDIS DI Setup Time 100 ns tCSH CS Hold Time 0 ns tDIH DI Hold Time 20 ns tPD Output Delay 500 ns tSV CS to Status Valid 500 ns tDF CS to DO in Hi-Z 100 ns tWP Write Cycle Time 10 ms CS = VIL 3 NM93C46 Rev. E www.fairchildsemi.com NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) Absolute Maximum Ratings (Note 1) Operating Conditions Ambient Storage Temperature Ambient Operating Temperature NM93C46L/LZ NM93C46LE/LZE NM93C46LV/LZV -65°C to +150°C All Input or Output Voltages with Respect to Ground +6.5V to -0.3V Lead Temperature (Soldering, 10 sec.) +300°C ESD rating 0°C to +70°C -40°C to +85°C -40°C to +125°C Power Supply (VCC) 2.7V to 5.5V 2000V DC and AC Electrical Characteristics VCC = 2.7V to 5.5V unless otherwise specified Symbol Parameter Conditions ICCA Operating Current CS = VIH, SK=1.0 MHz ICCS Standby Current L LZ (2.7V to 4.5V) CS = VIL IIL IOL Input Leakage Output Leakage VIN = 0V to VCC (Note 2) VIL VIH Input Low Voltage Input High Voltage VOL VOH Output Low Voltage Output High Voltage IOL = 10µA IOH = -10µA fSK SK Clock Frequency (Note 3) tSKH SK High Time Min -0.1 0.8VCC Max Units 1 mA 10 1 µA µA ±1 µA 0.15VCC VCC +1 V 0.1VCC V 250 KHz 0.9VCC 0 1 µs 1 µs 0.2 µs 1 µs CS Setup Time 0.2 µs tDH DO Hold Time 70 ns tDIS DI Setup Time 0.4 µs tCSH CS Hold Time 0 ns tDIH DI Hold Time 0.4 µs tPD Output Delay 2 µs tSV CS to Status Valid 1 µs tDF CS to DO in Hi-Z 0.4 µs tWP Write Cycle Time 15 ms tSKL SK Low Time tSKS SK Setup Time tCS Minimum CS Low Time tCSS (Note 4) CS = VIL Capacitance TA = 25°C, f = 1 MHz (Note 5) Symbol Test Typ Max Units COUT Output Capacitance 5 pF CIN Input Capacitance 5 pF Note 1: Stress above 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 above those indicated in the operational sections of the specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note 2: Typical leakage values are in the 20nA range. Note 3: The shortest allowable SK clock period = 1/fSK (as shown under the fSK parameter). Maximum SK clock speed (minimum SK period) is determined by the interaction of several AC parameters stated in the datasheet. Within this SK period, both tSKH and tSKL limits must be observed. Therefore, it is not allowable to set 1/fSK = tSKHminimum + tSKLminimum for shorter SK cycle time operation. Note 4: CS (Chip Select) must be brought low (to VIL) for an interval of tCS in order to reset all internal device registers (device reset) prior to beginning another opcode cycle. (This is shown in the opcode diagram on the following page.) Note 5: AC Test Conditions This parameter is periodically sampled and not 100% tested. VCC Range VIL/VIH Input Levels VIL/VIH Timing Level VOL/VOH Timing Level IOL/IOH 2.7V ≤ VCC ≤ 5.5V 0.3V/1.8V 1.0V 0.8V/1.5V ±10µA 4.5V ≤ VCC ≤ 5.5V 0.4V/2.4V 1.0V/2.0V 0.4V/2.4V 2.1mA/-0.4mA (Extended Voltage Levels) (TTL Levels) Output Load: 1 TTL Gate (CL = 100 pF) 4 NM93C46 Rev. E www.fairchildsemi.com NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) Absolute Maximum Ratings (Note 1) Microwire Interface Chip Select (CS) A typical communication on the Microwire bus is made through the CS, SK, DI and DO signals. To facilitate various operations on the Memory array, a set of 7 instructions are implemented on NM93C46. The format of each instruction is listed under Table 1. This is an active high input pin to NM93C46 EEPROM (the device) and is generated by a master that is controlling the device. A high level on this pin selects the device and a low level deselects the device. All serial communications with the device is enabled only when this pin is held high. However this pin cannot be permanently tied high, as a rising edge on this signal is required to reset the internal state-machine to accept a new cycle and a falling edge to initiate an internal programming after a write cycle. All activity on the SK, DI and DO pins are ignored while CS is held low. Instruction Each of the 7 instructions is explained under individual instruction descriptions. Start bit This is a 1-bit field and is the first bit that is clocked into the device when a Microwire cycle starts. This bit has to be “1” for a valid cycle to begin. Any number of preceding “0” can be clocked into the device before clocking a “1”. Serial Clock (SK) This is an input pin to the device and is generated by the master that is controlling the device. This is a clock signal that synchronizes the communication between a master and the device. All input information (DI) to the device is latched on the rising edge of this clock input, while output data (DO) from the device is driven from the rising edge of this clock input. This pin is gated by CS signal. Opcode This is a 2-bit field and should immediately follow the start bit. These two bits (along with 2 MSB of address field) select a particular instruction to be executed. Serial Input (DI) Address Field This is an input pin to the device and is generated by the master that is controlling the device. The master transfers Input information (Start bit, Opcode bits, Array addresses and Data) serially via this pin into the device. This Input information is latched on the rising edge of the SCK. This pin is gated by CS signal. This is a 6-bit field and should immediately follow the Opcode bits. In NM93C46, all 6 bits are used for address decoding during READ, WRITE and ERASE instructions. During all other instructions, the MSB 2 bits are used to decode instruction (along with Opcode bits). Serial Output (DO) Data Field This is an output pin from the device and is used to transfer Output data via this pin to the controlling master. Output data is serially shifted out on this pin from the rising edge of the SCK. This pin is active only when the device is selected. This is a 16-bit field and should immediately follow the Address bits. Only the WRITE and WRALL instructions require this field. D15 (MSB) is clocked first and D0 (LSB) is clocked last (both during writes as well as reads). Table 1. Instruction set Instruction Start Bit Opcode Field READ 1 10 A5 A4 A3 A2 A1 A0 WEN 1 00 1 1 X X X X Data Field WRITE 1 01 A5 A4 A3 A2 A1 A0 D15-D0 WRALL 1 00 0 1 X X X X D15-D0 WDS 1 00 0 0 X X X X ERASE 1 11 A5 A4 A3 A2 A1 A0 ERAL 1 00 1 0 X X X X 5 NM93C46 Rev. E Address Field www.fairchildsemi.com NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) Pin Description A typical Microwire cycle starts by first selecting the device (bringing the CS signal high). Once the device is selected, a valid Start bit (“1”) should be issued to properly recognize the cycle. Following this, the 2-bit opcode of appropriate instruction should be issued. After the opcode bits, the 6-bit address information should be issued. For certain instructions, some of these 6 bits are don’t care values (can be “0” or “1”), but they should still be issued. Following the address information, depending on the instruction (WRITE and WRALL), 16-Bit data is issued. Otherwise, depending on the instruction (READ), the device starts to drive the output data on the DO line. Other instructions perform certain control functions and do not deal with data bits. The Microwire cycle ends when the CS signal is brought low. However during certain instructions, falling edge of the CS signal initiates an internal cycle (Programming), and the device remains busy till the completion of the internal cycle. Each of the 7 instructions is explained in detail in the following sections. It is also recommended to follow this instruction (after the device becomes READY) with a Write Disable (WDS) instruction to safeguard data against corruption due to spurious noise, inadvertent writes etc. 4) Write All (WRALL) Write all (WRALL) instruction is similar to the Write instruction except that WRALL instruction will simultaneously program all memory locations with the data pattern specified in the instruction. This instruction is valid only when 1) Read (READ) ■ Device is write-enabled (Refer WEN instruction) READ instruction allows data to be read from a selected location in the memory array. Input information (Start bit, Opcode and Address) for this instruction should be issued as listed under Table1. Upon receiving a valid input information, decoding of the opcode and the address is made, followed by data transfer from the selected memory location into a 16-bit serial-out shift register. This 16-bit data is then shifted out on the DO pin. D15 bit (MSB) is shifted out first and D0 bit (LSB) is shifted out last. A dummy-bit (logical 0) precedes this 16-bit data output string. Output data changes are initiated on the rising edge of the SK clock. After reading the 16-bit data, the CS signal can be brought low to end the Read cycle. Refer Read cycle diagram. Input information (Start bit, Opcode, Address and Data) for this WRALL instruction should be issued as listed under Table1. After inputting the last bit of data (D0 bit), CS signal must be brought low before the next rising edge of the SK clock. This falling edge of the CS initiates the self-timed programming cycle. It takes tWP time (Refer appropriate DC and AC Electrical Characteristics table) for the internal programming cycle to finish. During this time, the device remains busy and is not ready for another instruction. Status of the internal programming can be polled as described under WRITE instruction description. While the device is busy, it is recommended that no new instruction be issued. Refer Write All cycle diagram. 2) Write Enable (WEN) 5) Write Disable (WDS) When VCC is applied to the part, it “powers up” in the Write Disable (WDS) state. Therefore, all programming operations must be preceded by a Write Enable (WEN) instruction. Once a Write Enable instruction is executed, programming remains enabled until a Write Disable (WDS) instruction is executed or VCC is completely removed from the part. Input information (Start bit, Opcode and Address) for this WEN instruction should be issued as listed under Table1. The device becomes write-enabled at the end of this cycle when the CS signal is brought low. Execution of a READ instruction is independent of WEN instruction. Refer Write Enable cycle diagram. Write Disable (WDS) instruction disables all programming operations and should follow all programming operations. Executing this instruction after a valid write instruction would protect against accidental data disturb due to spurious noise, glitches, inadvertent writes etc. Input information (Start bit, Opcode and Address) for this WDS instruction should be issued as listed under Table1. The device becomes write-disabled at the end of this cycle when the CS signal is brought low. Execution of a READ instruction is independent of WDS instruction. Refer Write Disable cycle diagram. 6) Erase (ERASE) 3) Write (WRITE) The ERASE instruction will program all bits in the specified location to a logical “1” state. Input information (Start bit, Opcode and Address) for this WDS instruction should be issued as listed under Table1. After inputting the last bit of data (A0 bit), CS signal must be brought low before the next rising edge of the SK clock. This falling edge of the CS initiates the self-timed programming cycle. It takes tWP time (Refer appropriate DC and AC Electrical Characteristics table) for the internal programming cycle to finish. During this time, the device remains busy and is not ready for another instruction. Status of the internal programming can be polled as described under WRITE instruction description. While the device is busy, it is recommended that no new instruction be issued. Refer Erase cycle diagram. WRITE instruction allows write operation to a specified location in the memory with a specified data. This instruction is valid only when ■ Device is write-enabled (Refer WEN instruction) Input information (Start bit, Opcode, Address and Data) for this WRITE instruction should be issued as listed under Table1. After inputting the last bit of data (D0 bit), CS signal must be brought low before the next rising edge of the SK clock. This falling edge of the CS initiates the self-timed programming cycle. It takes tWP time (Refer appropriate DC and AC Electrical Characteristics table) for the internal programming cycle to finish. During this time, the device remains busy and is not ready for another instruction. 6 NM93C46 Rev. E www.fairchildsemi.com NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) The status of the internal programming cycle can be polled at any time by bringing the CS signal high again, after tCS interval. When CS signal is high, the DO pin indicates the READY/BUSY status of the chip. DO = logical 0 indicates that the programming is still in progress. DO = logical 1 indicates that the programming is finished and the device is ready for another instruction. It is not required to provide the SK clock during this status polling. While the device is busy, it is recommended that no new instruction be issued. Refer Write cycle diagram. Functional Description When programming is in progress, the Data-Out pin will display the programming status as either BUSY (low) or READY (high) when CS is brought high (DO output will be tri-stated when CS is low). To restate, during programming, the CS pin may be brought high and low any number of times to view the programming status without affecting the programming operation. Once programming is completed (Output in READY state), the output is ‘cleared’ (returned to normal tri-state condition) by clocking in a Start Bit. After the Start Bit is clocked in, the output will return to a tri-stated condition. When clocked in, this Start Bit can be the first bit in a command string, or CS can be brought low again to reset all internal circuits. Refer Clearing Ready Status diagram. The Erase all instruction will program all locations to a logical “1” state. Input information (Start bit, Opcode and Address) for this WDS instruction should be issued as listed under Table1. After inputting the last bit of data (A0 bit), CS signal must be brought low before the next rising edge of the SK clock. This falling edge of the CS initiates the self-timed programming cycle. It takes tWP time (Refer appropriate DC and AC Electrical Characteristics table) for the internal programming cycle to finish. During this time, the device remains busy and is not ready for another instruction. Status of the internal programming can be polled as described under WRITE instruction description. While the device is busy, it is recommended that no new instruction be issued. Refer Erase All cycle diagram. Related Document Application Note: AN758 - Using Fairchild’s MICROWIRE™ EEPROM. Note: The Fairchild CMOS EEPROMs do not require an “ERASE” or “ERASE ALL” instruction prior to the “WRITE” or “WRITE ALL” instruction, respectively. The “ERASE” and “ERASE ALL” instructions are included to maintain compatibility with earlier technology EEPROMs.Clearing of Ready/Busy status 7 NM93C46 Rev. E www.fairchildsemi.com NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) 7) Erase All (ERAL) NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) Timing Diagrams ; ;; ;;; ;; ;; ; ; ;; ;; ; ;;;;; ; ;; ;;;;;;;;; ;;;;;; ; ;;;;;;;; ; ;;;;;; ; ;;;;;;;; ;;;;;;;; ; ;;;;;;; ;;;;;;;;; ; ; SYNCHRONOUS DATA TIMING CS SK tCSS tSKS tSKH tDIS DI tSKL tCSH tDIH Valid Input ; ; ; ; ; ; ; ; ; ; ; ; ; ;;;;;;;;;;;;;;;;;;; ; ; ; ;;;;;;;;;;;;;;;;;;;;; ;;;;;;;; ;;;;;;;; ; ;;;;;; ;;;;;;;; ; ; Valid Input tPD Valid Output DO (Data Read) tSV DO (Status Read) tDF tPD tDH Valid Output tDF Valid Status NORMAL READ CYCLE (READ) tCS CS SK DI 1 1 Star t Bit 0 A5 A4 Opcode Bits(2) A1 ;;;;;;;;;;;;;; ;;;;;;;;;;;;;; ;;; ;;; A0 Address Bits(6) High - Z DO 0 D15 D1 D0 Dummy Bit 93C46: Address bits patter n -> User defined WRITE ENABLE CYCLE (WEN) tCS CS SK DI 1 Star t Bit 0 0 Opcode Bits(2) A5 A4 A1 A0 Address Bits(6) High - Z DO 93C46: A d d r e s s b i t s p a t t e r n - > 1 - 1 - x - x - x - x ; ( x - > D o n ' t C a r e, c a n b e 0 o r 1 ) 8 NM93C46 Rev. E www.fairchildsemi.com NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) Timing Diagrams (Continued) WRITE DISABLE CYCLE (WDS) tCS CS SK DI 1 0 Star t Bit 0 A5 A4 Opcode Bits(2) A1 A0 Address Bits(6) High - Z DO 93C46: A d d r e s s b i t s p a t t e r n - > 0 - 0 - x - x - x - x ; ( x - > D o n ' t C a r e, c a n b e 0 o r 1 ) WRITE CYCLE (WRITE) tCS CS SK DI 1 0 Star t Bit 1 A5 A4 Opcode Bits(2) A1 A0 D15 D14 Address Bits(6) D1 D0 tWP Data Bits(16) High - Z DO Ready Busy 93C46: Address bits patter n -> User defined Data bits patter n -> User defined WRITE ALL CYCLE (WRALL) tCS CS SK DI 1 Star t Bit 0 0 Opcode Bits(2) A5 A4 A1 A0 D15 D14 Address Bits(6) Data Bits(16) D1 D0 tWP High - Z DO Ready Busy 93C46: A d d r e s s b i t s p a t t e r n - > 0 - 1 - x - x - x - x ; ( x - > D o n ' t C a r e, c a n b e 0 o r 1 ) Data bits pattern -> User defined 9 NM93C46 Rev. E www.fairchildsemi.com NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) Timing Diagrams (Continued) ERASE CYCLE (ERASE) tCS CS SK 1 DI Star t Bit 1 1 Opcode Bits(2) DO A5 A4 A1 A0 tWP Address Bits(6) High - Z Ready Busy 93C46: Address bits pattern -> User defined ERASE ALL CYCLE (ERAL) tCS CS SK 1 DI Star t Bit 1 1 Opcode Bits(2) DO A5 High - Z A4 A1 A0 tWP Address Bits(6) Ready Busy 93C46: Address bits patter n -> 1-0-x-x-x-x ; (x -> Don't Care, can be 0 or 1) CLEARING READY STATUS CS SK DI Star t Bit DO High - Z Ready High - Z Busy Note: This Star t bit can also be par t of a next instr uction. Hence the cycle can be continued (instead of getting ter minated, as shown) as if a new instr uction is being issued. 10 NM93C46 Rev. E www.fairchildsemi.com NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) Physical Dimensions inches (millimeters) unless otherwise noted 0.189 - 0.197 (4.800 - 5.004) 8 7 6 5 0.228 - 0.244 (5.791 - 6.198) 1 2 3 4 Lead #1 IDENT 0.010 - 0.020 x 45° (0.254 - 0.508) 0.0075 - 0.0098 (0.190 - 0.249) Typ. All Leads 0.150 - 0.157 (3.810 - 3.988) 8° Max, Typ. All leads 0.04 (0.102) All lead tips 0.053 - 0.069 (1.346 - 1.753) 0.004 - 0.010 (0.102 - 0.254) Seating Plane 0.014 (0.356) 0.016 - 0.050 (0.406 - 1.270) Typ. All Leads 0.050 (1.270) Typ 0.014 - 0.020 Typ. (0.356 - 0.508) Molded Package, Small Outline, 0.15 Wide, 8-Lead (M8) Package Number M08A 11 NM93C46 Rev. E www.fairchildsemi.com 0.114 - 0.122 (2.90 - 3.10) 8 5 (4.16) Typ (7.72) Typ 0.169 - 0.177 (4.30 - 4.50) 0.246 - 0.256 (6.25 - 6.5) (1.78) Typ (0.42) Typ 0.123 - 0.128 (3.13 - 3.30) (0.65) Typ 1 Land pattern recommendation 4 Pin #1 IDENT 0.0433 Max (1.1) 0.0256 (0.65) Typ. 0.0035 - 0.0079 See detail A 0.002 - 0.006 (0.05 - 0.15) 0.0075 - 0.0098 (0.19 - 0.30) Gage plane 0°-8° DETAIL A Typ. Scale: 40X 0.020 - 0.028 (0.50 - 0.70) Seating plane 0.0075 - 0.0098 (0.19 - 0.25) Notes: Unless otherwise specified 1. Reference JEDEC registration MO153. Variation AA. Dated 7/93 8-Pin Molded TSSOP, JEDEC (MT8) Package Number MTC08 12 NM93C46 Rev. E www.fairchildsemi.com NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) Physical Dimensions inches (millimeters) unless otherwise noted 0.373 - 0.400 (9.474 - 10.16) 0.090 (2.286) 8 0.092 DIA (2.337) 7 6 0.250 - 0.005 + Pin #1 IDENT 8 0.032 ± 0.005 (6.35 ± 0.127) Pin #1 IDENT 1 Option 1 1 0.280 MIN (7.112) 0.300 - 0.320 (7.62 - 8.128) 7 (0.813 ± 0.127) RAD 5 2 3 0.040 Typ. (1.016) 0.030 MAX (0.762) 20° ± 1° 4 Option 2 0.145 - 0.200 0.039 (0.991) (3.683 - 5.080) 0.130 ± 0.005 (3.302 ± 0.127) 95° ± 5° 0.009 - 0.015 (0.229 - 0.381) +0.040 0.325 -0.015 +1.016 8.255 -0.381 0.125 (3.175) DIA NOM 0.125 - 0.140 (3.175 - 3.556) 0.065 (1.651) 90° ± 4° Typ 0.018 ± 0.003 (0.457 ± 0.076) 0.100 ± 0.010 (2.540 ± 0.254) 0.045 ± 0.015 (1.143 ± 0.381) 0.020 (0.508) Min 0.060 (1.524) 0.050 (1.270) Molded Dual-In-Line Package (N) Package Number N08E Life Support Policy Fairchild's products are not authorized for use as critical components in life support devices or systems without the express written approval of the President of Fairchild Semiconductor Corporation. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. Fairchild Semiconductor Americas Customer Response Center Tel. 1-888-522-5372 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. Fairchild Semiconductor Europe Fax: +44 (0) 1793-856858 Deutsch Tel: +49 (0) 8141-6102-0 English Tel: +44 (0) 1793-856856 Français Tel: +33 (0) 1-6930-3696 Italiano Tel: +39 (0) 2-249111-1 Fairchild Semiconductor Hong Kong 8/F, Room 808, Empire Centre 68 Mody Road, Tsimshatsui East Kowloon. Hong Kong Tel; +852-2722-8338 Fax: +852-2722-8383 Fairchild Semiconductor Japan Ltd. 4F, Natsume Bldg. 2-18-6, Yushima, Bunkyo-ku Tokyo, 113-0034 Japan Tel: 81-3-3818-8840 Fax: 81-3-3818-8841 Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. 13 NM93C46 Rev. E www.fairchildsemi.com NM93C46 1024-Bit Serial CMOS EEPROM (MICROWIRETM Synchronous Bus) Physical Dimensions inches (millimeters) unless otherwise noted