Electronic Components Datasheet Search |
|
M87C257-20XF6X Datasheet(PDF) 1 Page - STMicroelectronics |
|
M87C257-20XF6X Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 13 page M87C257 ADDRESS LATCHED 256K (32K x 8) UV EPROM and OTP EPROM June 1996 1/13 AI00928B 15 A0-A14 ASVPP Q0-Q7 VCC M87C257 G E VSS 8 Figure 1. Logic Diagram INTEGRATED ADDRESS LATCH FAST ACCESS TIME: 45ns LOW POWER “CMOS” CONSUMPTION: – Active Current 30mA – Standby Current 100 µA PROGRAMMING VOLTAGE: 12.75V ELECTRONIC SIGNATURE for AUTOMATED PROGRAMMING PROGRAMMING TIMES of AROUND 3sec. (PRESTO II ALGORITHM) DESCRIPTION The M87C257 is a high speed 262,144 bit UV erasable and electrically programmable EPROM. The M87C257 incorporates latches for all address inputs to minimize chip count, reduce cost, and simplify the design of multiplexed bus systems. The Window Ceramic Frit-Seal Dual-in-Line pack- age has a transparent lid which allows 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 M87C257 is offered in Plastic Leaded Chip Carrier, package. A0 - A14 Address Inputs Q0 - Q7 Data Outputs E Chip Enable G Output Enable ASVPP Address Strobe / Program Supply VCC Supply Voltage VSS Ground Table 1. Signal Names PLCC32 (C) 1 28 FDIP28W (F) |
Similar Part No. - M87C257-20XF6X |
|
Similar Description - M87C257-20XF6X |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |