Datasheet Standard EEPROMs Plug & Play EEPROMs (for Display) BR24C21xxx Series (1K) General Description TM TM BR24C21F,BR24C21FJ,BR24C21FV are serial EEPROMs that support DDC1 /DDC2 interfaces for Plug and Play displays Features Packages W(Typ.) x D(Typ.) x H(Max.) TM TM Compatible with both DDC1 /DDC2 Operating voltage range: 2.5V to 5.5V Page write function: 8bytes Low power consumption Active (at 5V) : 1.5mA (typ) Stand-by (at 5V) : 0.1A (typ) Address auto increment function during Read SOP8 DIP-T8 operation 9.30mm x 6.50mm x 7.10mm 5.00mm x 6.20mm x 1.71mm Data security Write enable feature (VCLK) Write protection at low Vcc Initial data=FFh Data retention: 10years Rewriting possible up to 100,000 times SOP- J8 SSOP-B8 4.90mm x 6.00mm x 1.65mm 3.00mm x 6.40mm x 1.35mm BR24C21xxx series Capacity Type Power source Voltage DIP-T8 SOP8 SOP-J8 SSOP-B8 1Kbit BR24C21 2.5V to 5.5V Absolute Maximum Ratings Parameter Symbol Ratings Unit Remarks Supply Voltage V -0.3 to +6.5 V CC When using at Ta=25 or higher 8.0mW to be reduced per 1. 800(DIP-T8) 450 (SOP8) When using at Ta=25 or higher 4.5mW to be reduced per 1. Power Dissipation Pd mW When using at Ta=25 or higher 4.5mW to be reduced per 1. 450 (SOP-J8) 350(SSOP-B8) When using at Ta=25 or higher 3.5mW to be reduced per 1. Storage Temperature Tstg -65 to +125 Operating Temperature Topr -40 to +85 Terminal Voltage -0.3 to Vcc+0.3 V Memory cell characteristics Limits Parameter Unit Min. Typ. Max Write/Erase Cycle 100,000 Times Data Retention 10 Years Product structureSilicon monolithic integrated circuit This product is not designed protection against radioactive rays . www.rohm.com TSZ02201-0R2R0G100270-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/18 TSZ2211114001 30.Oct.2012 Rev.002DatasheetDatasheet BR24C21xxx Series (1K) Recommended Operating Ratings Parameter Symbol Ratings Unit Supply Voltage VCC 2.5 to 5.5 V Input voltage VIN 0 to Vcc Electrical characteristics DC (Unless otherwise specified, Ta=-40 to +85V =2.5V to 5.5V) CC Limits Parameter Symbol Unit Condition Min. Typ. Max. H Input Voltage 1 VIH1 0.7V - - V SCL, SDA CC L Input Voltage 1 VIL1 - - 0.3V V SCL, SDA CC H Input Voltage 2 VIH2 2.0 - - V VCLK VCLK, V 4.0V L Input Voltage 2 VIL2 - - 0.8 V CC VCLK, V 4.0V L Input Voltage 3 VIL3 - - 0.2V V CC CC L Output Voltage VOL - - 0.4 V SDA, IOL=3.0mA Input Leakage Current ILI -1 - 1 A SCL, VCLK, VIN=0V to V CC Output Leakage Current ILO -1 - 1 A SDA, VOUT=0V to V CC Operating Current ICC - - 3.0 mA V =5.5V, fSCL=400kHz CC Standby Current ISB - 10 100 A V =5.5V, SDA=SCL=V ,VCLK=GND *1 CC CC *1 Transmit-Only Mode - After power on, the BR24C21/F/FJ/FV is in Standby mode and does not provide the clock to the VCLK pin. After the clock is provided to VCLK, the device is switched from Standby to Transmit-Only Mode, and the operating current flows. Bi-directional Mode - The BR24C21/F/FJ/FV is in Standby mode after each command is performed. AC (Unless otherwise specified, Ta=-40 to +85,VCC=2.5V to 5.5V) Fast-mode Standard-mode Parameter Symbol VCC=2.5V to 5.5V VCC=2.5V to 5.5V Unit Min. Typ. Max. Min. Typ. Max. Clock Frequency fSCL - - 400 - - 100 kHz s Data Clock High Period tHIGH 0.6 - - 4.0 - - Data Clock Low Period tLOW 1.3 - - 4.7 - - s SDA and SCL Rise Time tR - - 0.3 - - 1.0 s SDA and SCL Fall Time tF - - 0.3 - - 0.3 s Start Condition Hold Time tHD:STA 0.6 - - 4.0 - - s Start Condition Setup Time tSU:STA 0.6 - - 4.7 - - s Input Data Hold Time tHD:DAT 0 - - 0 - - ns Input Data Setup Time tSU:DAT 100 - - 250 - - ns Output Data Delay Time(SCL) tPD - - 0.9 0.2 - 3.5 s Stop Condition Setup Time tSU:STO 0.6 - - 4.0 - - s Bus Free Time tBUF 1.3 - - 4.7 - - s Write Cycle Time tWR - - 10 - - 10 ms Noise Spike Width (SDA and SCL) tI - - 0.1 - - 0.1 s AC OPERATING CHARACTERISTICS (Transmit-Only Mode) Output Data Delay Time(VCLK) tVPD - - 1.0 - - 2.0 s VCLK High Period tVHIGH 0.6 - - 4.0 - - s VCLK Low Period tVLOW 1.3 - - 4.7 - - s VCLK Setup Time tVSU 0 - - 0 - - s VCLK Hold Time tVHD 0.6 - - 4.0 - - s Mode Transition Time tVHZ - - 0.5 - - 1.0 s Transmit-Only Powerup Time tVPU 0 - - 0 - - s Noise Spike Width (VCLK) tVI - - 0.1 - - 0.1 s www.rohm.com TSZ02201-0R2R0G100270-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/18 TSZ2211115001 30.Oct.2012 Rev.002