SIEMENS SLx 24C32 32 Kbit EEPROM ICs User Manual and Data Sheet
Summary
Engineers requiring reliable, high-density non-volatile data storage will find this detailed guide essential. This document covers the SLx 24C32, a low-power 32 Kbit Serial CMOS EEPROM designed for embedded systems and demanding applications. It provides comprehensive technical specifications, including timing diagrams, erase/write cycles, operating parameters across Industrial and Automotive temperature ranges, and programming guidelines necessary for seamless hardware integration.
Page 1 Text Content
Standard EEPROM ICs SLx 24C32 Kbit (4096 bit) Serial CMOS-EEPROM with I2C Synchronous 2-Wire Bus
Data Sheet Preliminary 1998-07-27
Page Summary Contents For SIEMENS SLx 24C32 32 Kbit EEPROM ICs User Manual and Data Sheet
Page 1
Standard EEPROM ICs SLx 24C32 Kbit (4096 bit) Serial CMOS-EEPROM with I2C Synchronous 2-Wire Bus Data Sheet Preliminary 1998-07-27
Page 2
SLx 24C32 Revision History: Current Version: Preliminary 1998-07-27 Previous Version: 02.98, 04.98 Page Page Subjects (major changes since last revision) (in previous (in current Version) Version) Tex...
Page 3
Kbit (4096 bit) Serial CMOS SLx 24C32 EEPROMs, I2C Synchronous 2-Wire Bus Preliminary Features Data EEPROM internally organized as bytes and pages bytes Page Protection Mode for protecting the EEPROM ...
Page 4
SLx 24C32 Ordering Information Type Ordering Code Package Temperature Voltage SLA 24C32-D Q67100-H3746 P-DIP-8-4 °C °C 4.5 V...5.5 SLA 24C32-D/P Q67100-H3752 SLA 24C32-S Q67100-H3748 P-DSO-8-3 °C °C 4...
Page 5
SLx 24C32 Pin Definitions and Functions Table Pin No. Symbol Function 1, 2, CS0, CS1, CS2 Chip select inputs VSS Ground SDA Serial bidirectional data bus SCL Serial clock input WP Write protection inp...
Page 6
SLx 24C32 Description The SLx 24C32 device is serial electrically erasable and programmable read only memory (EEPROM), organized as bit. The data memory is divided into pages. The bytes of page can be...
Page 7
SLx 24C32 I2C-Bus Characteristics Access to the SLx 24C32 device is given via the I2C bus. This bidirectional bus consists of two wires SCL and SDA for clock and data. The protocol is master/slave ori...
Page 8
SLx 24C32 The conventions for the serial clock line and the bidirectional data line are shown in figure 4. SDA ACK ACK START Condition Data allowed Acknowledge STOP Condition to Change IED02128 Figure...
Page 9
SLx 24C32 Device Addressing and EEPROM Addressing After START condition, the master always transmits command byte CSW or CSR. After the acknowledge of the EEPROM control bytes follow, their contents a...
Page 10
SLx 24C32 Command Byte (CSW) Data Transfer to EEPROM SDA CS2 CS1 CS0 ACK A10 A9 A8A11 ACK START from Master Acknowledge from EEPROMAcknowledge from EEPROM SDA A6 A5 A0A1A2A3A4A7 ACK Acknowledge from E...
Page 11
SLx 24C32 Write Operations Changing of the EEPROM data is initiated by the master with the command byte CSW. Either one byte (Byte Write) or up to byte (Page Write) are modified in one programming pro...
Page 12
SLx 24C32 5.2 Page Write Address Setting The page write procedure is the same as the byte write procedure up to the first data byte. In page write instruction however, entry of the EEPROM address byte...
Page 13
SLx 24C32 The erase/write cycle is finished latest after ms. Acknowledge polling can be used for speed enhancement in order to detect the end of the erase/write cycle. Please refer to chapter 5.3, Ack...
Page 14
SLx 24C32 STOP from Master initiates erase/write cycle START from Master CSR CSR CSR SSDA 1P Acknowledge of EEPROM indicates complete erase/ write cycle STOP from Master initiates erase/write cycle ST...
Page 15
SLx 24C32 Read Operations Reading of the EEPROM data is initiated by the Master with the command byte CSR. 6.1 Random Read Random read operations allow the master to access any memory location. Addres...
Page 16
SLx 24C32 6.2 Current Address Read The EEPROM content is read without setting an EEPROM address, in this case the current content of the address counter will be used (e.g. to continue previous read op...
Page 17
SLx 24C32 6.3 Sequential Read sequential read is initiated in the same way as current read or random read except that the master acknowledges the data byte transmitted by the EEPROM. The EEPROM then c...
Page 18
SLx 24C32 Page Protection Mode TM The page protection mode is supported by the SLx 24C32.../P types only. For example SLA 24C32-D/P has the same functionality as SLA 24C32-D enhanced by page protectio...
Page 19
SLx 24C32 7.1 Protection Bit Handling The bits of the protection memory can be addressed directly for reading or programming. protection bit address corresponds to the lowest address within the respec...
Page 20
SLx 24C32 7.2 Protection Bit Write and Erase For writing or erasing protection bit the data of the respective page have to be known by the master. The master has to present the page data as reference ...
Page 21
SLx 24C32 bytes have to be identical to the bytes stored in ascending address order within the same page. successful verification of each byte is indicated by the EEPROM by pulling the SDA line to low...
Page 22
SLx 24C32 Electrical Characteristics The listed characteristics are ensured over the operating range of the integrated circuit. Typical characteristics specify mean values expected over the production...
Page 23
SLx 24C32 8.2 DC Characteristics (cont’d) Parameter Symbol Limit Values Units Test Condition min. typ. max. Input high VIH 0.7 VCC VCC 0.5 voltage Output low VOL 0.4 IOL m A; VCC voltage IOL 2.1 m A; ...
Page 24
SLx 24C32 8.3 AC Characteristics Parameter Symbol Limit Values Limit Values Units VCC 2.7-5.5 VCC 4.5-5.5 min. max. min. max. SCL clock frequency f SCL k Hz Clock pulse width low tlow 4.7 1.2 µs Clock...
Page 25
SLx 24C32 LOWt HIGH SU.STAt SU.DAT HD.STAt HD.DATt SU.STO BUFt SDA In Start Condition Stop Condition AA DHtt SDA Out IED02127 Figure Bus Timing Data Semiconductor Group Preliminary 1998-07-27
Page 26
SLx 24C32 Package Outlines P-DIP-8-4 (Plastic Dual In-line Package) P-DSO-8-3 (Plastic Dual Small Outline Package) Sorts of Packing Package outlines for tubes, trays etc. are contained in our Data Boo...
Manual Details
| Brand | Siemens |
|---|---|
| Pages | 26 |
| File Size | 357.84 KB |
| Published | June 02, 2026 |
77 views
Enter the captcha to get the download link:
Frequently Asked Questions
What operational temperature ranges are available for the device?
Industrial versions span -40 °C to +85 °C, while dedicated automotive grades extend up to -40 °C to +125 °C.
How quickly can data be programmed onto the EEPROM?
The typical programming time is 5 milliseconds (ms) when writing a maximum of 32 bytes of data.
Is there protection against unintended data modifications?
Yes, Page Protection Mode can be used to protect the EEPROM against accidental or unintended data changes on the /P types.
Can this component be included in life-support systems?
No; critical components require express written authorization from the Semiconductor Group of Siemens AG for use in life support devices or systems.