M34C02

2/19

the memory become permanently write protected.

Care must be taken when using this sequence as

its effect cannot be reversed. In addition, the

device allows the entire memory area to be write

protected, using the WC input (for example by

The M34C02 is a 2 Kbit electrically erasable pro-

grammable memory (EEPROM), organized as

256x8 bits, fabricated with STMicroelectronics’

High Endurance, Advanced, CMOS technology.

This guarantees an endurance typically well

above one million Erase/Write cycles, with a data

retention of 40 years. These memory devices

operate with a power supply down to 2.2 V for the

M34C02-L.

The M34C02 is available in Plastic Dual In-line,

Plastic Small Outline and Thin Shrink Small

Outline packages.

These memory devices are compatible with the

interface that uses a bi-directional data bus and

serial clock. The memory carries a built-in 4-bit

Device Type Identifier code (1010) in accordance

area and a second Device Type Identifier Code

(0110) to access the Protection Register. These

codes are used together with three chip enable

inputs (E2, E1, E0) so that up to eight 2 Kbit

devices may be attached to the I²C bus and

selected individually.

protocol, with all memory operations synchronized

by the serial clock. Read and Write operations are

initiated by a START condition, generated by the

bus master. The START condition is followed by a

Device Select Code and RW bit (as described in

Table 3), terminated by an acknowledge bit.

When writing data to the memory, the memory

following the bus master’s 8-bit transmission.

Figure 2A. DIP Connections

SDA

VSS

SCL

WC

E1

E0

VCC

E2

AI01932

M34C02

1

2

3

4

8

7

6

5

Figure 2B. SO and TSSOP Connections

1

AI01933

2

3

4

8

7

6

5

SDA

VSS

SCL

WC

E1

E0

VCC

E2

M34C02

Note: 1. Except for the rating “Operating Temperature Range”, stresses above those listed in the Table “Absolute Maximum Ratings” may

cause permanent damage to the device. These are stress ratings only, and operation of the device at these or any other conditions

above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating condi-

tions for extended periods may affect device reliability. Refer also to the ST SURE Program and other relevant quality documents.

2. MIL-STD-883C, 3015.7 (100 pF, 1500

Ω)

Symbol

Parameter

Value

Unit

Ambient Operating Temperature

-40 to 85

°C

Storage Temperature

-65 to 150

°C

Lead Temperature during Soldering

PSDIP8: 10 sec

SO8: 40 sec

TSSOP8: 40 sec

260

215

215

°C

Input or Output range

-0.6 to 6.5

V

Supply Voltage

-0.3 to 6.5

V

4000

V