MT49H64M9CHT-25:A Micron Technology Inc, MT49H64M9CHT-25:A Datasheet - Page 34

• Manufacturer Part Number: MT49H64M9CHT-25:A
• Manufacturer: Micron Technology Inc
• Type: RLDRAMr

Specifications of MT49H64M9CHT-25:A

• Organization: 64Mx9
• Address Bus: 25b
• Operating Supply Voltage (typ): 1.8V
• Package Type: FBGA
• Operating Temp Range: 0C to 95C
• Operating Supply Voltage (max): 1.9V
• Operating Supply Voltage (min): 1.7V
• Supply Current: 675mA
• Pin Count: 144
• Mounting: Surface Mount
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

Configuration Tables
Table 18:
Burst Length (BL)
PDF: 09005aef815b2df8/Source: 09005aef811ba111
576Mb_RLDRAM_II_SIO_Core2.fm - Rev. F 6/09 EN
Valid frequency range
Parameter
t
t
t
WL
RC
RL
Notes 1–2 apply to the entire table
Cycle Time and READ/WRITE Latency Configuration Table
Notes:
Table 18 shows the different configurations that can be programmed into the mode
register. The WRITE latency is equal to the READ latency plus one in each configuration
in order to maximize data bus utilization. Bits M0, M1, and M2 are used to select the
configuration during the MRS command.
1.
2. Minimum operating frequency for -18 is 370 MHz.
3. BL = 8 is not available.
4. The minimum
Burst length is defined by M3 and M4 of the mode register. Read and write accesses to
the RLDRAM are burst-oriented, with the burst length being programmable to 2, 4, or 8.
Figure 12 on page 35 illustrates the different burst lengths with respect to a READ
command. Changes in the burst length affect the width of the address bus (see Table 19
on page 35 for details). Note that if changing the burst length of the device, the data
written by the prior burst length is not guaranteed to be accurate.
266–175
t
the same bank. In this instance the minimum
RC < 20ns in any configuration only available with -25E and -18 speed grades.
1
4
4
5
3
576Mb: x9, x18 2.5V Vext, 1.8V Vdd, HSTL, SIO, RLDRAM II
t
RC is typically 3 cycles, except in the case of a WRITE followed by a READ to
400–175
2
6
6
7
34
Configuration
533–175
3
8
8
9
Micron Technology, Inc., reserves the right to change products or specifications without notice.
t
RC is 4 cycles.
200–175
4
3, 4
3
3
4
©2004 Micron Technology, Inc. All rights reserved.
333–175
5
5
5
6
Commands
Units
MHz
t
t
t
CK
CK
CK