Electronic Components Datasheet Search |
|
EM39LV088-70H Datasheet(PDF) 3 Page - ELAN Microelectronics Corp |
|
EM39LV088-70H Datasheet(HTML) 3 Page - ELAN Microelectronics Corp |
3 / 22 page EM39LV088 8M Bits (1Mx8) Flash Memory SPECIFICATION This specification is subject to change without further notice. (04.09.2004 V1.0) Page 3 of 22 Pin Description Pin Name Function A0–A19 20 addresses DQ7–DQ0 Data inputs/outputs CE# Chip enable OE# Output enable WE# Write enable VDD 2.7-3.6 volt single power supply VSS Device ground NC Pin not connected internally Table 1: Pin Description Device Operation The EM39LV088 uses Commands to initiate the memory operation functions. The Commands are written to the device by asserting WE# Low while keeping CE# Low. The address bus is latched on the falling edge of WE# or CE#, whichever occurs last. The data bus is latched on the rising edge of WE# or CE#, whichever occurs first. Read The Read operation of the EM39LV088 is controlled by CE# and OE#. Both have to be Low for the system to obtain data from the outputs. CE# is used for device selection. When CE# is high, the chip is deselected and only standby power is consumed. OE# is the output control and is used to gate data from the output pins. The data bus is in high impedance state when either CE# or OE# is high. Refer to the Read Cycle Timing Diagram in Figure 1 for further details. Byte Program The EM39LV088 is programmed on a byte-by-byte basis. Before programming, the sector where the byte is located; must be erased completely. The Program operation is accomplished in three steps: The first step is a three-byte load sequence for Software Data Protection. The second step is to load byte address and byte data. During the Byte Program operation, the addresses are latched on the falling edge of either CE# or WE#, whichever occurs last; and the data is latched on the rising edge of either CE# or WE#, whichever occurs first. The third step is the internal Program operation which is initiated after the rising edge of the fourth WE# or CE#, whichever occurs first. The Program operation, once initiated, will be completed within 20 µs. See Figures 2 and 3 for WE# and CE# controlled Program operation timing diagrams respectively and Figure 12 for flowchart. |
Similar Part No. - EM39LV088-70H |
|
Similar Description - EM39LV088-70H |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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 |