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TC9WMB1AFK データシート(PDF) 5 Page - Toshiba Semiconductor |
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TC9WMB1AFK データシート(HTML) 5 Page - Toshiba Semiconductor |
5 / 18 page TC9WMB1AFK/FU,TC9WMB2AFK/FU 2007-10-19 5 5. Write Operation (1) Byte write A data is written to the specified address at a byte write operation. After a start condition, a device address, W R/ ( = 0), a word address, and write data are received to the device. When a stop condition is generated subsequently, write operation starts automatically, rewriting the data at the specified address with the input data. A next instruction cannot be received while write operation is in progress. Therefore, no acknowledge signal is returned. After writing the data, the device automatically enters the standby state. (2) Page write A Data is written up to 8 bytes to the specified page at a page write operation. After a start condition, a device address, W R/ ( = 0), a word address (n), and write data (n) are received to the device, in the same way as for a byte write operation. Then, write data (n + 1) is immediately received without entering a stop condition, while checking that an acknowledge signal is asserted (0). The first five bits (W3 to W7) of the word address are the same and the lower three bits (W0 to W2) are automatically incremented so that up to 8 bytes of data can be written. When the last address within the page is reached, the lower three bits (W0 to W2) of the word address are rolled over to the first address of the page. If more than 8 bytes of write data are transferred, the last 8 bytes are valid. When a stop condition is generated subsequently, write operation starts automatically, rewriting the data at the specified addresses with the input data. Figure 5 SDA LINE 1 0 1 0 0 W 6 W 4 W 5 W 3 W 1 W 2 W 0 D 7 D 6 D 4 D 5 D 3 D 1 D 2 D 0 S T A R T M S B DEVICE ADDRESS W R I T E L S B A C K R / W W 7 WORD ADDRESS A C K A C K WRITE DATA S T O P Address increment M S B L S B A 2 A 1 A 0 *: Optional for the TC9WMB1A. * Figure 6 *: Optional for the TC9WMB1A. SDA LINE 1 0 1 0 0 W 6 W 4 W 5 W 3 W 1 W 2 W 0 D 7 D 6 D 4 D 5 D 3 D 1 D 2 D 0 D 7 D 6 D 4 D 5 D 3 D 1 D 2 D 0 D 4 D 5 D 3 D 1 D 2 D 0 S T A R T M S B DEVICE ADDRESS W R I T E L S B A C K R / W W 7 WORD ADDRESS (n) A C K WRITE DATA (n) WRITE DATA (n + 1) A C K WRITE DATA (n + m) S T O P A C K Address increment Address increment Address increment A 2 A 1 A 0 * |
同様の部品番号 - TC9WMB1AFK |
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同様の説明 - TC9WMB1AFK |
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