M95256-RDW6TP STMicroelectronics, M95256-RDW6TP Datasheet - Page 23

• Manufacturer Part Number: M95256-RDW6TP
• Description: IC EEPROM 256KBIT 2MHZ 8TSSOP
• Manufacturer: STMicroelectronics

Specifications of M95256-RDW6TP

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 256K (32K x 8)
• Speed: 2MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6352-2

M95256-DR, M95256, M95256-W, M95256-R
Figure 13. Read Identification Page sequence
5.8
Write Identification Page
The Identification Page (256 bytes) is an additional page which can be written and (later)
permanently locked in Read-only mode.
Writing this page is achieved with the Write Identification Page instruction (see
Chip Select signal (S) is first driven low. The bits of the instruction byte, address byte, and at
least one data byte are then shifted in on Serial Data input (D). Address bit A10 must be 0,
address bits [A15:A11] and [A9:A6] are Don't Care, the [A5:A0] address bits define the byte
address inside the identification page. The instruction sequence is shown in
Figure 14. Write Identification Page sequence
Doc ID 12276 Rev 13
Figure
Instructions
Table
14.
4), the
23/47