BU9833GUL-WE2 Rohm Semiconductor, BU9833GUL-WE2 Datasheet

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... High Reliability Series Serial EEPROMs WL-CSP EEPROM family BUS BU9833GUL-W ●Description BU9833GUL-W series is a serial EEPROM of I available at 400kHz. ●Features 1) Completely conforming to the world standard I and serial data(SDA) 2) Other devices than EEPROM can be connected to the same port, saving microcontroller port. 3) Actions available at 400kHz clock (1.7V~5.5V ...

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... BU9833GUL-W ●Recommended action conditions Parameter Symbol Power source voltage Input voltage ●Memory cell characteristics (Ta=25℃, Vcc=1.7~5.5V) Parameter Number of data rewrite times Data hold years * 1:Not 100% TESTED ●Electrical characteristics (Unless otherwise specified, Ta=-40~+85℃, Vcc=1.7~5.5V) Parameter Symbol “HIGH” input voltage1 “ ...

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... BU9833GUL-W ●Action timing Characteristics (Unless otherwise specified, Ta=-40～+85℃,Vcc=1.7~5.5V) Parameter SCL frequency Data clock “HIGH” time Data clock “LOW” time SDA, SCL rise time *1 SDA< SCL fall time *1 Start condition hold time Start condition setup time Input data hold time ...

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... Fig.2 Block diagram ○ ○ ○ ○ ○ ○ Fig.3 BU9833GUL－W (bottom view) Input/ Output Power Supply - IN Slave Address Set IN Write Protect Input - Ground （0V） IN Serial Clock Input Slave and Word Address, IN/OUT Serial Data Input, Serial Data Output *1 ...

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... BU9833GUL-W ●Characteristic data 1 0.8 0.6 SPEC 0.4 Ta=25℃ Ta=85℃ 0.2 Ta=-40℃ IOL1[mA] Fig.7 L input voltage VOL1-IOL1 (Vcc=2.5V) 2.5 SPEC 2 fSCL=400kHz DATA=AAh 1.5 Ta=25℃ Ta=85℃ 1 0.5 Ta=-40℃ Vcc[V] Fig.10 Consumption current at write action Icc1 (f =400kHz) SCL 10000 Ta=-40℃ ...

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... BU9833GUL-W ●Characteristic data 1 0.8 Ta=85℃ Ta=25℃ 0.6 Ta=-40℃ 0.4 0.2 SPEC Vcc[V] Fig.22 Output data hold time tDH1 Ta=-40℃ 2 Ta=25℃ SPEC Ta=85℃ Vcc[V] Fig.25 Bus release time before transfer start tBUF 0.6 0.5 0.4 Ta=-40℃ ...

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... shown below. Setting --- write (setting 0 to word address setting of random read) Setting --- read Type BU9833GUL page select bits. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved ADDRESS R/W ACK DATA ACK Fig ...

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... And when data of the maximum bytes or higher is sent, data from the first byte is overwritten. (Refer to “Internal address increment” of “Notes on page write cycle” in P8/16.) ・As for page write cycle of BU9833GUL-W, after page select bit (PS) of slave address is designated arbitrarily, by continuing data input of 2 bytes or more, the address of insignificant 4 bits is incremented internally, and data bytes can be written ...

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... Fig.38 Difference of each type of slave address ○Notes on page write cycle List of numbers of page write Number of Pages Product number BU9833GUL-W The above numbers are maximum bytes for respective types. Any types below these can be written. 1page = 16 bytes, but the page write cycle write time is 5ms at maximum for 16byte bulk write ...

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... BU9833GUL-W ●Command ○Read cycle Data of EEPROM is read. In read cycle, there are random read cycle and current read cycle. Random read cycle is a command to read data by designating address, and is used generally. Current read cycle is a command to read data of internal address register without designating address, and is used when to verify just after write cycle ...

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... BU9833GUL-W ●Software reset Software reset is executed when to avoid malfunction after power on, and to reset during command input. Software reset has several kinds, and 3 kinds of them are shown in the figure below. (Refer to Fig.43(a), Fig.43(b) and Fig.43(c).) In dummy clock input area, release the SDA bus (“H” by pull up). In dummy clock area, ACK output and read data “0” (both “L” ...

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... BU9833GUL-W ●WP valid timing (write cancel usually to “H” or “L”, but when WP is used to cancel write cycle and so forth, pay attention to the following WP valid timing. During write cycle execution, in cancel valid area, by setting WP = “H”, write cycle can be cancelled. In both byte write cycle and page write cycle, the area from the first start condition of command to the rise of clock to taken data (in page write cycle, the first byte data) is cancel invalid area ...

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... In the case to use both READ and WRITE, control WP terminal or connect it CC 13/18 Technical Note ), select an appropriate value large, action frequency is PU and SDA should below device connected to bus at output of “H” microcontroller and EEPROM including IH BU9833GUL SDA terminal Bus line capacity CBUS Fig.47 I/O circuit diagram ...

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... BU9833GUL-W ●Cautions on microcontroller connection ○ BUS recommended that SDA port is of open drain input / output. However, when to use COMS input / output of tri state to SDA port, insert a series resistance Rs between the pull up resistance R EEPROM. This controls over protection of SDA terminal against surge. Therefore, even when SDA port is open drain input / output, Rs can be used ...

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... BU9833GUL BUS input / output circuit ●I ○Input (A2,SCL) ○Input / output (SDA) ○Input (WP) www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. Fig.52 Input pin circuit diagram Fig.53 Input / output pin circuit diagram Fig.54 Input pin circuit diagram 15/18 Technical Note 2010.10 - Rev.A ...

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... BU9833GUL-W ●Notes on power ON At power on internal circuit and set, Vcc rises through unstable low voltage area, and IC inside is not completely reset, and malfunction may occur. To prevent this, function of POR circuit and LVCC circuit are equipped. To assure the action, observe the following conditions at power on. ...

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... BU9833GUL-W ●Notes for use (1) Described numeric values and data are design representative values, and the values are not guaranteed. (2) We believe that application circuit examples are recommendable, however, in actual use, confirm characteristics further sufficiently. In the case of use by changing the fixed number of external parts, make your decision with sufficient margin in consideration of static characteristics and transition characteristics and fluctuations of external parts and our LSI ...

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... BU9833GUL-W ●Ordering part number Part No. Part No. VCSP50L1 (BU9833GUL-W) 1PIN MARK 1.27±0.1 0. φ 0.25±0.05 0. φ 0.15)INDEX POST 0.385±0.1 0.5 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved Package GUL : VCSP50L1 <Tape and Reel information> Tape Embossed carrier tape Quantity ...

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