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BR9020F Datasheet(PDF) 1 Page - Rohm |
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BR9020F Datasheet(HTML) 1 Page - Rohm |
1 / 17 page 1 Memory ICs 1, 2, and 4k bit EEPROMs for direct connection to serial ports BR9010 / BR9010F / BR9010FV / BR9020 / BR9020F / BR9040 / BR9040F •Overview The BR90 series are serial EEPROMs that can be connected directly to a serial port and can be erased and written electrically. Writing and reading is performed in word units, using four types of operation commands. Communication occurs through CS, SK, DI, and DO pins, WC pin control is used to initiate a write disabled state, enabling these EEPROMs to be used as one-time ROMs. During writing, operation is checked via the internal status check. •Features • BR9010 / F / FV (1k bit): 64 words × 16 bits BR9020 / F (2k bit): 128 words × 16 bits BR9040 / F (4k bit): 256 words × 16 bits • Single power supply operation • Serial data input and output • Automatic erase-before-write • Low current consumption –1.5mA (max.) active current: 3V –2 µA (max.) standby current: 3V • Noise filter built into SK pin • Compact DIP8, SOP8, SSOP-B8 packages (SSOP- B8 is available only with BR9010). • 100,000 ERASE / WRITE cycles • 10 years Data Retention • Easily connects to serial port •Pin assignments 1 2 3 4 8 7 6 5 CS SK DI DO VCC R / B∗ WC GND BR9010 / BR9020 / 9040 1 2 3 4 8 7 6 5 R / B∗ VCC CS SK WC GND DO DI BR9010F / BR9010FV / BR9020F / BR9040F •Pin description CS SK DI DO GND WC VCC R / B Function Chip select input Serial data clock input Operating code, address, and serial data input Serial data output Reference voltage for all I / O, 0V Write control input READY, BUSY status signal output Power supply connection Pin name ∗ This pin is N.C. (non connection) on BR9010. |
Similar Part No. - BR9020F |
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Similar Description - BR9020F |
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