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STMicroelectronics Electronic Components Datasheet


M24C32-R

32-Kbit serial I2C bus EEPROM


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M24C32-R pdf
M24C32-W M24C32-R M24C32-F
M24C32-X M24C32-DF
32-Kbit serial I²C bus EEPROM


PDIP8 (BN)
TSSOP8 (DW)
169 mil width
SO8 (MN)
150 mil width
UFDFPN8
(MC)
UFDFPN5
(MH)
WLCSP
(CU)
Unsawn wafer
Datasheet - production data
Features
Compatible with all I2C bus modes:
– 1 MHz
– 400 kHz
– 100 kHz
Memory array:
– 32 Kbit (4 Kbyte) of EEPROM
– Page size: 32 byte
– Additional Write lockable page
(M24C32-D order codes)
Single supply voltage:
– 1.7 V to 5.5 V over –40 °C / +85 °C
– 1.6 V to 5.5 V over –20 °C / +85 °C
Write:
– Byte Write within 5 ms
– Page Write within 5 ms
Random and sequential Read modes
Write protect of the whole memory array
Enhanced ESD/Latch-Up protection
More than 4 million Write cycles
More than 200-years data retention
Packages
PDIP8 ECOPACK1®
SO8 ECOPACK2®
TSSOP8 ECOPACK2®
UFDFPN8 ECOPACK2®
WLCSP ECOPACK2®
UFDFPN5 ECOPACK2®
Unsawn wafer (each die is tested)
May 2016
This is information on a product in full production.
DocID4578 Rev 28
1/48
www.st.com



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M24C32-R pdf
Contents
Contents
M24C32-W M24C32-R M24C32-F M24C32-X M24C32-DF
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Signal description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 Serial Clock (SCL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2 Serial Data (SDA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Chip Enable (E2, E1, E0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Write Control (WC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 VSS (ground) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6 Supply voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6.1 Operating supply voltage (VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6.2 Power-up conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6.3 Device reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6.4 Power-down conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Memory organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Device operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Start condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 Stop condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3 Data input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4 Acknowledge bit (ACK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.5 Device addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1 Write operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1.1 Byte Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1.2 Page Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1.3 Write Identification Page (M24C32-D only) . . . . . . . . . . . . . . . . . . . . . . 17
5.1.4 Lock Identification Page (M24C32-D only) . . . . . . . . . . . . . . . . . . . . . . 17
5.1.5 ECC (Error Correction Code) and Write cycling . . . . . . . . . . . . . . . . . . 17
5.1.6 Minimizing Write delays by polling on ACK . . . . . . . . . . . . . . . . . . . . . . 18
5.2 Read operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2.1 Random Address Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2/48 DocID4578 Rev 28



Part Number M24C32-R
Description 32-Kbit serial I2C bus EEPROM
Maker STMicroelectronics - STMicroelectronics
Total Page 30 Pages
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M24C32-R pdf
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