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ML22804 Datasheet(PDF) 26 Page - List of Unclassifed Manufacturers |
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ML22804 Datasheet(HTML) 26 Page - List of Unclassifed Manufacturers |
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26 / 41 page  FEDL2280XFULL-04 ML22808/ML22804/Ml22802-XXX Command Function Descriptions 1. PUP1 command • command 0 0 0 0 ⎯ ⎯ S1 S0 PUP1 command is used to shift the ML22804/ML22808-xxx from power down state to the command standby state. In the power down state, any command input other than PUP1 and PUP2 will be ignored. The ML22804/ML22808-xxx enters the power down state in any of the following conditions: 1) When power is turned on 2) At RESET input 3) When both NCR and BUSY go to a “H” level after inputting the power down command. The relationship between S1/S0 and the memory bank is as follows. S1 S0 ML22808/ML22804/ML22P808/ML22P804 ML22802/ML22P802 0 0 Uses the entire space of the internal memory as one area. Uses the entire space of the internal memory. 0 1 Divides the internal memory into two areas to select the memory areas with the SEL0 pin. Setting prohibited (fix S0 to “0”) 1 0 Divides the internal memory into four areas to select the memory areas with the SEL0 and SEL1 pins. Divides the internal memory into two areas to select the memory areas with the SEL pin. 1 1 Setting prohibited Setting prohibited (Fix S0 to “0”.) CS Status Oscillation stabilized Awaiting command SCK DI NCR BUSY Power down XT •XT Oscillating Oscillation stopped AOUT GND 1V The oscillation starts when the PUP1 command is input and, after an elapse of about 2 ms oscillation stabilization time, the AOUT output abruptly changes from GND level to approx. 1 V level. Therefore, this abrupt change in AOUT output will cause generation of pop noise if the AOUT output is not processed outside. To suppress pop noise, input the PUP2 command. Any command that is input during oscillation stabilization will be ignored. However, if a “L” level is input to the RESET pin, the device enters the power down state immediately. 26/41 |
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