The Microchip Memory Cross Reference data base allows Microchip's Memory
parameters to be compared to other manufacturer's Memory parameters, in order
to quickly find the best Microchip Memory for a given competitors' device and
customer's design requirement. If more detailed information is needed on an
Memory's specifications, please refer to the data sheet which can be found on
Microchip's website. Alternately, once a competitor's device is identified in
this data base, Microchip's Memory parametric search engine can be used on our
website at the
Microchip Product Comparison Utility.
Memory Parameters
Address Pins - The number of address pins for for unique
identification of multiple deviceson the same bus (I2C only). Address pins are
generally only used if more than one serial EEPROM shares the same I2C bus.
Clock Frequency - The maximum available clock frequency for the
device. There may be different values at minimum Vdd from maximum Vdd.
Currents - The maximum standby, read, write currents consumed
by the device at maximum Vdd at any temperature.
Endurance - The maximum number of write cycles specified in the
datasheet.
ESD - The maximum ESD rating (Human Body Model) of the device
specified in the datasheet.
Memory Org - x8, x16 or both. Generally, only the Microwire
products have this option, via an "ORG" pin.
Mmory Size - The size, in bits, of the use accessible memory
array.
Page Length - The number of bytes of data that can be written
in a single operation.
Serial Bus - The interface protocol used to acess the memory.
Temperature - The operating temperature range of the device,
for both reads and writes.
Vdd - The Vdd Voltage is the specified supply voltage of the
device, and represents the voltage between the Vdd and Vss pins. Typically, Vdd
is the system voltage and Vss is the system ground.
WP scheme - The type of write protection available on the
device. There may be multiple options depending on configuration bits. Please
consult the relevant datasheet for more information.
Write Cycle Time - The maximum amout of tyime taken for the
internal cycle, at maximum Vdd. This is for one byte or up to one page.
Package - This column lists the available package types for a
given device. Industry standard nomenclature is used when possible, although
some manufactures have packages that are unique.
Pinout – This column lists a unique 5 digit code for every
package variation, allowing the various pinouts for a given package to be
compared. The code is formatted as follows: aa bb c Pkg #pin pinout. A
code match between devices indicate a pin-for-pin match for a given package
type.