M24C64-W M24C64-R M24C64-F M24C64-DF

DC and AC parameters

Doc ID 16891 Rev 27

25/42

Figure 12.

AC measurement I/O waveform

Table 10.

Input parameters

Symbol

1.

Characterized only, not tested in production.

Test condition

Min.

Max.

Unit

Input capacitance (SDA)

8

pF

Input capacitance (other pins)

6

pF

2.

E2, E1, E0 input impedance when the memory is selected (after a Start condition).

30

k

Ω

500

k

Ω

Table 11.

Cycling performance by groups of four bytes

Symbol

Parameter

1.

Cycling performance for products identified by process letter K.

Max.

Unit

Ncycle

Write cycle

2.

The Write cycle endurance is defined for groups of four data bytes located at addresses [4*N, 4*N+1,

4*N+2, 4*N+3] where N is an integer. The Write cycle endurance is defined by characterization and

qualification.

TA

3.

A Write cycle is executed when either a Page Write, a Byte Write, a Write Identification Page or a Lock

Identification Page instruction is decoded. When using the Byte Write, the Page Write or the Write

Identification Page, refer also to Section 5.1.5: ECC (Error Correction Code) and Write cycling.

1,200,000

Table 12.

Memory cell data retention

Parameter

Test condition

Min.

Unit

1.

For products identified by process letter K. The data retention behavior is checked in production. The 200-

year limit is defined from characterization and qualification results.

TA = 55 °C

200

Year