EEPROM

AS58C1001

AS58C1001

Rev. 5.9 11/10

Micross Components reserves the right to change products or specifications without notice.

3

FUNCTIONAL DESCRIPTION

AUTOMATIC PAGE WRITE

The Page Write feature allows 1 to 128 Bytes of data to

be written into the EEPROM in a single cycle and allows the

undefined data within 128 Bytes to be written corresponding

to the undefined address (A

0

to A

6

). Loading the first Byte of

data, the data load window of 30

μs opens for the second. In

the same manner each additional Byte of data can be loaded

within 30

μs. In case CE\ and WE\ are kept high for 100μs after

data input, the EEPROM enters erase and write automatically

and only the input data can be written into the EEPROM. In

Page mode the data can be written and accessed 10

page, and in Byte mode 10

DATA\ POLLING

Data\ Polling allows the status of the EEPROM to be de-

termined. If the EEPROM is set to Read mode during a Write

cycle, and inversion of the last Byte of data to be loaded outputs

from I/O, to indicate that the EEPROM is performing a Write

operation.

WRITE PROTECTION

(1) Noise protection: Noise on a write cycle will not act as a

trigger with a WE\ pulse of less than 20ns.

(2) Write inhibit: Holding OE\ low, WE\ high or CE\ high,

inhibits a write cycle during power on/off.

WE\ AND CE\ PIN OPERATION

During a write cycle, addresses are latched by the falling

edge of WE\ or CE\, and data is latched by the rising edge of

WE\ or CE\.

WRITE/ERASE ENDURANCE AND

DATA RETENTION

The endurance with page programming is 10

cumulative failure rate) and the data retention time is more than

10 years when a device is programmed less than 10

DATA PROTECTION

To protect the data during operation and power on/off, the

AS58C1001 has:

1. Data protection against Noise on Control Pins (CE\, OE\,

WE\) during Operation. During readout or standby, noise on

the control pins may act as a trigger and turn the EEPROM to

programming mode by mistake. To prevent this phenomenon,

the AS58C1001 has a noise cancellation function that cuts noise

if its width is 20ns or less in programming mode. Be careful

not to allow noise of a width of more than 20ns on the control

pins.