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Part: M27C4002-15XF1TR
Category:
Memory
-> EPROM
-> 8 Mb
Description: 4 Mbit 256kb X16 uv EPROM And OTP EPROM
Company: ST Microelectronics, Inc.
Datasheet: Download M27C4002-15XF1TR datasheet File size : 45 kB
Request For quote: Find where to buy M27C4002-15XF1TR
Datasheet text preview:
M27C4002
4 Mbit (256Kb x16) UV EPROM and OTP EPROM
5V ± 10% SUPPLY VOLTAGE in READ OPERATION FAST ACCESS TIME: 45ns LOW POWER CONSUMPTION: Active Current 70mA at 10MHz Standb y Current 100µA PROGRAMMING VOLTAGE: 12.75V ± 0.25V PROGRAMMING TIME: 100µs/byte (typical) ELECTRONIC SIGNATURE Manufacturer Code: 0020h Device Code: 0044h
40
40
1
1
F DIP40W (F)
PDIP40 (B)
JLCC44W (J)
DESCRIPTION The M27C4002 is a 4 Mbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one time programmable). It is ideally suited for microprocessor systems requiring large programs and is organised as 262,144 words of 16 bits. The FDIP40W (window ceramic frit-seal package) and the JLCC44W (J-lead chip carrier package s) have transparent lids which allow the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be written to the device by following the programming procedure. For applications where the content is programmed only one time and erasure is not required, the M27C4002 is offered in PDIP40, PLCC44 and TSOP40 (10 x 20 mm) packages .
PLCC44 (C)
TSOP40 (N) 10 x 20 mm
Figure 1. Logic Diagram
VCC
VPP
18 A0-A17
16 Q0-Q15
Table 1 . Signal Names
A0-A17 Q0-Q15 E G VPP VCC VSS September 1998 Address Inputs Data Outputs Chip Enable Output Enable Program Supply Supply Voltage Ground
E G
M27C4002
VSS
AI00727B
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M27C4002
Figure 2A. DIP Pin Connections
VPP E Q15 Q14 Q13 Q12 Q11 Q10 Q9 Q8 VSS Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 G 1 2 3 4 5 6 7 8 9 10 M27C4002 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 VCC A17 A16 A15 A14 A13 A12 A11 A10 A9 VSS A8 A7 A6 A5 A4 A3 A2 A1 A0
Figure 2B. LCC Pin Connections
Q12 Q11 Q10 Q9 Q8 VSS NC Q7 Q6 Q5 Q4
Q13 Q14 Q15 E VPP NC VCC A17 A16 A15 A14 1 44 A13 A12 A11 A10 A9 VSS NC A8 A7 A6 A5 12 M27C4002 34 23 Q3 Q2 Q1 Q0 G NC A0 A1 A2 A3 A4
AI00729
AI00728
Warning: N C = Not Connected.
Figure 2C. TSOP Pin Connections
A9 A10 A11 A12 A13 A14 A15 A16 A17 VCC VPP E DQ15 DQ14 DQ13 DQ12 DQ11 DQ10 DQ9 DQ8 1 40 VSS A8 A7 A6 A5 A4 A3 A2 A1 A0 G DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 VSS
10 11
M27C4002 (Normal)
31 30
20
21
AI01831
DEVICE OPERATION The operating modes of the M27C4002 are listed in the Operating Modes table. A single power supply is required in the read mode. All inputs are TTL levels except for Vpp and 12V on A9 for Electronic Signature. Read Mode The M27C4002 has two control functions, both of which must be logically active in order to obtain data at the outputs . Chip Enable ( E) is the power control and should be used for device selection. Output Enable (G) is the output control and should be used to gate data to t he output pins, independen t of device selection. Assuming that the addresses are stable, the address access time (tAVQV) is equal to the delay from E t o output (tELQV). Data is available at the output after a delay of tGLQV from the f alling edge of G, assuming that E has been low and the addresses have been stable for at least t AVQV-tGLQV. Standby Mode The M27C4002 has a standby mode which reduces the supply current from 50mA to 100µA. The M27C4002 is placed in the standby mode by applying a CMOS high signal to the E input. When in the standby mode, the outputs are in a high impedance state, independ ent of the G input.
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M27C4002
Table 2 . Absolute Maximum Ratings (1)
Symbol TA TBIAS TSTG VIO
(2)
Parameter Ambient Operating Temperature Temperature Under Bias Storage Temperature Input or Output Voltages (except A9) Supply Voltage A9 Voltage Program Supply Voltage
(3)
Value 40 to 125 50 to 125 65 to 150 2 to 7 2 to 7 2 to 13.5 2 to 14
U nit °C °C °C V V V V
VCC VA9
( 2)
VPP
Notes: 1. Except for the rating "Operating Temperature Range", s tresses above those lis ted in the Table "Absolute Maximum Ra tings" may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this s pecification is not i mplied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. 2. Minimum DC voltage on Input or Output is 0.5V with possible undershoot to 2.0V for a peri od l ess than 20ns. Maximum DC voltage on Output is VCC +0.5V with possible overshoot t o VCC +2V for a period less than 20ns. 3. Depends on range.
Table 3 . Operating Modes
Mode Read Output Disable Program Verify Program Inhibit Standby Electronic Signature
Note: X = VIH or VIL, VI D = 12V ± 0.5V
E VI L VI L VIL Pulse VIH VIH VIH VI L
G VI L VIH VIH VI L VIH X VI L
A9 X X X X X X VID
VPP VCC or VSS VCC or VSS VPP VPP VPP VCC or VSS VCC
Q0 - Q15 D ata Out H i-Z D ata In D ata Out H i-Z H i-Z C odes
Table 4 . Electronic Signature
Identifier Manufacturer's Code Device Code A0 V IL VIH Q7 0 0 Q6 0 1 Q5 1 0 Q4 0 0 Q3 0 0 Q2 0 1 Q1 0 0 Q0 0 0 Hex D ata 20h 44h
Note: Outputs Q8-Q15 are set to '0'.
Two Line Output Control Because EPROMs are usually used in larger memory arrays, the product features a 2 line control function which accommodates t he use of multiple memory connection. The two line control function allows: a. the lowest possible memory power dissipation, b. complete assurance that output bus contentio n will not occur.
For the most efficient use of these two control lines, E should be decoded and used as t he primary device selecting f unction, while G should be made a common connection t o all devices in the array and connected to the REA D line from the system control bus. T his ensures that all deselected memory devices are in their low power standby mode and that the output pins are only active when data is required from a particular memory device.
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