Description
The Microchip Technology Inc. 34XX02(1) is a 2-Kbit
Electrically Erasable PROM (EEPROM). This device
has two software write-protect features for the lower
half of the array, as well as an external pin that can be
used to write-protect the entire array. This allows the
system designer to protect none, half or all of the array,
depending on the application. The device is organized
as one block of 256 x 8-bit memory with a two-wire
serial interface. Its low-voltage design permits
operation down to 1.7V, with standby and active
currents of only 100 nA and 1 mA, respectively. The
34XX02 also has a page write capability for up to 16 bytes of data.

Features
• Permanent and Resettable Software Write-Protect
for Lower Half of the Array (00h-7Fh)
• Single Supply with Operation Down to 1.7V
• Low-Power CMOS Technology:
- Read current: 1 mA, typical
- Standby current: 100 nA, typical
• Two-Wire Serial Interface Bus, I2C Compatible
• Cascadable Up to Eight Devices
• Schmitt Trigger Inputs for Noise Suppression
• Output Slope Control to Eliminate Ground Bounce
• 100 kHz and 400 kHz Compatibility
• 1 MHz Clock for LC Versions
• Page Write Time: 5 ms, Maximum
• Self-Timed Erase/Write Cycle
• 16-Byte Page Write Buffer
• ESD Protection > 4,000V
• Software Write Protection for Lower 128 Bytes
• Hardware Write Protection for Entire Array
• More than 1 Million Erase/Write Cycles
• Data Retention > 200 Years
• RoHS Compliant
• Available for Extended Temperature Ranges:
- Industrial (I): -40°C to +85°C
- Extended (E): -40°C to +125°C
• Automotive AEC-Q100 Qualified