BMSKTOPASA900(DCE) Toshiba, BMSKTOPASA900(DCE) Datasheet - Page 271

• Manufacturer Part Number: BMSKTOPASA900(DCE)
• Description: KIT STARTER TMPA900 USB JTAG
• Manufacturer: Toshiba
• Series: TOPASr
• Type: MCUr

Specifications of BMSKTOPASA900(DCE)

• Contents: Evaluation Board, Cable(s), Software and Documentation
• For Use With/related Products: TMPA900CMXBG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

b. <stop_mem_clock>
c.
d. <row_bits><column_bits>
Note1: Depending on the SDRAM type, it may not be possible to stop the clock supply to the SDRAM while it is not
Note2: The memory clock stop function and the SDRAM auto Powerdown function cannot be used concurrently. Use
Note: The memory clock stop function and the SDRAM auto Powerdown function cannot be used concurrently.
SDRAM access request occurs again, the clock is automatically restarted.
controller becomes empty, the SDRAM can be placed into Powerdown mode by
automatically disabling CKE after the number of clock cycles specified in the
power_down_prd field. When an SDRAM access request occurs again, CKE is
automatically enabled to exit the Powerdown mode.
<auto_power_down>
As for the combination of row size, column size, Bank ・ Row ・ Column / Row ・ Bank ・ Column,
and memory width, the MSB of the row address and the MSB of the bank address must be
assigned within the address range [27:0].
The clock supply to the SDRAM can be stopped while it is not being accessed. When an
When no SDRAM access request is present and the command FIFO of the memory
being accessed. When using this function, be sure to carefully check the specifications of the SDRAM to be
used.
only either of the two.
Use only either of the two.
TENTATIVE
TMPA900CM- 270
TMPA900CM
2009-10-14