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Part: M27V401-250-1
Category:
Memory
-> ROM
-> OTP ROM
Description: NND - 4 Mbit (512KB X8) Low Voltage uv EPROM And OTP EPROM
Company: ST Microelectronics, Inc.
Datasheet: Download M27V401-250-1 datasheet File size : 45 kB
Request For quote: Find where to buy M27V401-250-1
Datasheet text preview:
M27V401
4 Mbit (512Kb x 8) Low Voltage UV EPROM and OTP EPROM
NOT FOR NEW DESIGN
s s
M27V401 is replaced by the M27W401 3V to 3.6V LOW VOLTAGE in READ OPERATION ACCESS TIME: 120ns LOW POWER CONSUMPTION: Active Current 15mA at 5MHz Standby Current 20µA
1 32
s s
32
1
s s s
PROGRAMMING VOLTAGE: 12.75V ± 0.25V PROGRAMMING TIME: 100µs/word ELECTRONIC SIGNATURE Manufacturer Code: 20h Device Code: 41h
FDIP32W (F)
PDIP32 (B)
DESCRIPTION The M27V401 is a low voltage 4 Mbit EPROM offered in the two range UV (ultra violet erase) and OTP (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V401 operates in the read mode with a supply voltage as low as 3V. The decrease in operating power allows either a reduction of the size of the battery or an increase in the time between battery recharges. The FDIP32W (window ceramic frit-seal package) has a transparent lid 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 M27V401 is offered in PDIP32, PLCC32 and TSOP32 (8 x 20 mm) packages.
PLCC32 (K)
TSOP32 (N) 8 x 20 mm
Figure 1. Logic Diagram
VCC
VPP
19 A0-A18
8 Q0-Q7
E G
M27V401
VSS
AI00695B
July 2000
This is information on a product still in production but not recommended for new designs.
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M27V401
Figure 2A. DIP Connections Figure 2B. LCC Connections
VPP A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 Q0 Q1 Q2 VSS
1 2 3 4 5 6 7 8 M27V401 9 10 11 12 13 14 15 16
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
VCC A18 A17 A14 A13 A8 A9 A11 G A10 E Q7 Q6 Q5 Q4 Q3
A 12 A 15 A 16 VPP VCC A 18 A 17 1 32 A7 A6 A5 A4 A3 A2 A1 A0 Q0 A14 A13 A8 A9 A11 G A10 E Q7 9 M27V401 25 17 Q1 Q2 VSS Q3 Q4 Q5 Q6
AI00696
AI01861
Figure 2C. TSOP Connections
Table 1. Signal Names
A0-A18 Q0-Q7 Address Inputs Data Outputs Chip Enable Output Enable Program Supply Supply Voltage Ground
A11 A9 A8 A13 A14 A17 A18 VCC VPP A16 A15 A12 A7 A6 A5 A4
1
32
8 9
M27V401 (Normal)
25 24
16
17
AI01156B
G A10 E Q7 Q6 Q5 Q4 Q3 VSS Q2 Q1 Q0 A0 A1 A2 A3
E G VPP VCC VSS
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M 27V401
Table 2. Absolute Maximum Ratings (1)
Symbol TA TBIAS TSTG VIO (2) VCC VA9 (2) VP P Parameter Ambient Operating Temperature (3) Temperature Under Bias Storage Temperature Input or Output Voltage (except A9) Supply Voltage A9 Voltage Program Supply Voltage Value 40 to 125 50 to 125 65 to 150 2 to 7 2 to 7 2 to 13.5 2 to 14 Unit °C °C °C V V V V
Note: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings" 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 specification is not implied. 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 period less than 20ns. Maximum DC voltage on Output is V CC +0.5V with possible overshoot to 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, V ID = 12V ± 0.5V.
E VIL VIL VIL Pulse VIH VIH VIH VIL
G VIL VIH VIH VIL VIH X VIL
A9 X X X X X X VID
VPP VCC or VSS VCC or VSS VPP VPP VPP VCC or VSS VCC
Q7-Q0 Data Out Hi-Z Data In Data Out Hi-Z Hi-Z Codes
Table 4. Electronic Signature
Identifier Manufacturer's Code Device Code A0 VIL VIH Q7 0 0 Q6 0 1 Q5 1 0 Q4 0 0 Q3 0 0 Q2 0 0 Q1 0 0 Q0 0 1 Hex Data 20h 41h
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Others parts begin by m2
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