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MAX548AEUA Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX548AEUA Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 16 page +2.5V to +5.5V, Low-Power, Single/Dual, 8-Bit Voltage-Output DACs in µMAX Package _______________________________________________________________________________________ 9 Table 2. MAX548A Serial-Interface Programming Commands COMMAND (Commands executed on CS’s rising edge) LDAC COMMANDS LOADING INPUT REGISTER(S) ONLY X Unassigned operation X XXXXXXXX 0 0 X X X 1 X X Unassigned command X XXXXXXXX 0 0 X 0 X 0 X CONTROL BYTE Loaded First Loaded Last UB1 Pin 6 D7........D0 A0 A1 C0 C1 UB3 C2 UB2 X Load DAC B input register and update both DAC registers. DAC A input register unchanged. 0 8-Bit DAC Data X Load DAC A input register and update both DAC registers. DAC B input register unchanged. 0 8-Bit DAC Data 0 1 1 1 X 0 X 1 0 1 1 X 0 X Update both DAC registers with current contents of their input registers. Both input registers unchanged. 0 0 0 1 1 X 0 X X X Load both DAC input registers and update both DAC registers. X 8-Bit DAC Data 1 1 0 1 X 0 X X Load DAC B input register and update both DAC registers. DAC A input register unchanged. X 8-Bit DAC Data 0 1 0 1 X 0 X X Load both DAC input registers. Both DAC regis- ters unchanged. X 8-Bit DAC Data 1 1 X 0 X 0 X X Load DAC B input register. DAC A input register and both DAC registers unchanged. X 8-Bit DAC Data 0 1 X 0 X 0 X X Load DAC A input register and update both DAC registers. DAC B input register unchanged. X 8-Bit DAC Data 1 0 0 1 X 0 X X Load DAC A input register. DAC B input register and both DAC registers unchanged. Update both DAC registers with current contents of their input registers. Both input registers unchanged. X X 8-Bit DAC Data XXXXXXXX 1 0 0 0 X 0 0 1 X 0 X 0 X X X UNASSIGNED COMMANDS DATA BYTE XXXXXXXX COMMANDS UPDATING DAC REGISTER(S) X Load both DAC input registers and update both DAC registers. 0 8-Bit DAC Data 1 1 1 1 X 0 X COMMANDS UTILIZING THE ASYNCHRONOUS LOAD FUNCTION X After CS’s rising edge and on LDAC’s falling edge, update both DAC registers with current contents of their input registers. Both input regis- ters unchanged. 1 XXXXXXXX 0 0 1 1 X 0 X X Load DAC A input register. After CS’s rising edge and on LDAC’s falling edge, update both DAC registers. 1 8-Bit DAC Data 1 0 1 1 X 0 X X Load DAC B input register. After CS’s rising edge and on LDAC’s falling edge, update both DAC registers. 1 8-Bit DAC Data 0 1 1 1 X 0 X X Load both DAC input registers. After CS’s rising edge and on LDAC’s falling edge, update both DAC registers. 1 8-Bit DAC Data 1 1 1 1 X 0 X |
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