m24256-br STMicroelectronics, m24256-br Datasheet - Page 5

• Manufacturer Part Number: m24256-br
• Description: 512 Kbit And 256 Kbit Serial I2c Bus Eeprom With Three Chip Enable Lines
• Manufacturer: STMicroelectronics

M24512-W, M24512-R, M24512-HR, M24256-BW, M24256-BR
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SO and TSSOP connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Device select code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Maximum R
bus at maximum frequency f
Maximum R
bus at maximum frequency f
I
Write mode sequences with WC = 1 (data write inhibited) . . . . . . . . . . . . . . . . . . . . . . . . . 14
Write Mode sequences with WC = 0 (data write enabled) . . . . . . . . . . . . . . . . . . . . . . . . . 16
Write cycle polling flowchart using ACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Read mode sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
AC test measurement I/O waveform. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
SO8W – 8 lead plastic small outline, 208 mils body width, package outline. . . . . . . . . . . . 27
SO8N – 8 lead plastic small outline, 150 mils body width, package outline . . . . . . . . . . . . 28
TSSOP8 – 8 lead thin shrink small outline, package outline . . . . . . . . . . . . . . . . . . . . . . . 29
2
C bus protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
bus
bus
value versus bus parasitic capacitance (C
value versus bus parasitic capacitance (C
C
C
= 400 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
= 1 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
bus
bus
) for an I
) for an I
2
2
C
C
List of figures
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