MT48H8M16LFB4-75 IT:J Micron Technology Inc, MT48H8M16LFB4-75 IT:J Datasheet - Page 29

• Manufacturer Part Number: MT48H8M16LFB4-75 IT:J
• Manufacturer: Micron Technology Inc
• Type: Mobile SDRAMr

Specifications of MT48H8M16LFB4-75 IT:J

• Organization: 8Mx16
• Density: 128Mb
• Address Bus: 14b
• Access Time (max): 8/5.4ns
• Maximum Clock Rate: 133MHz
• Operating Supply Voltage (typ): 1.8V
• Package Type: VFBGA
• Operating Temp Range: -40C to 85C
• Operating Supply Voltage (max): 1.95V
• Operating Supply Voltage (min): 1.7V
• Supply Current: 70mA
• Pin Count: 54
• Mounting: Surface Mount
• Operating Temperature Classification: Industrial
• Lead Free Status / Rohs Status: Compliant

Figure 12:
BURST TERMINATE
AUTO REFRESH
SELF REFRESH
PDF: 09005aef832ff1ea/Source: 09005aef832ff1ac
sdr_mobile_sdram_cmd_op_timing_dia_fr10_08__3.fm - Rev. E 4/09 EN
PRECHARGE Command
The BURST TERMINATE command is used to truncate either fixed-length or continuous
page bursts. The most recently registered READ or WRITE command prior to the BURST
TERMINATE command is truncated.
AUTO REFRESH is used during normal operation of the SDRAM and is analogous to
CAS#-BEFORE-RAS# (CBR) REFRESH in FPM/EDO DRAM. Addressing is generated by
the internal refresh controller. This makes the address bits “Don’t Care” during an AUTO
REFRESH command.
The SELF REFRESH command is used to place the device in self refresh mode. The self
refresh mode is used to retain data in the SDRAM while the rest of the system is powered
down. When in the self refresh mode, the SDRAM retains data without external clocking.
The SELF REFRESH command is initiated like an AUTO REFRESH command, except
that CKE is disabled (LOW). After the SELF REFRESH command is registered, all the
inputs to the SDRAM become “Don’t Care” with the exception of CKE, which must
remain LOW.
BA0, BA1
Address
RAS#
CAS#
WE#
CKE
A10
CLK
CS#
HIGH
Valid address
Bank address
Bank selected
All banks
128Mb: 8 Meg x 16, 4 Meg x 32 Mobile SDRAM
29
Don’t Care
Micron Technology, Inc., reserves the right to change products or specifications without notice.
©2008 Micron Technology, Inc. All rights reserved.
Commands