AS4C8M16SA-Automotive
128M – (8M x 16 bit) Synchronous DRAM (SDRAM)
Confidential
Features
Advanced (Rev. 2.0, Mar. /2015)
Overview
Fast access time from clock: 5 ns
Fast clock rate: 166 MHz
AEC-Q100 Compliant
The 128Mb SDRAM is a high-speed CMOS
synchronous DRAM containing 128 Mbits. It is
internally configured as 4 Banks of 2M word x 16
DRAM with a synchronous interface (all signals are
registered on the positive edge of the clock signal,
CLK). Read and write accesses to the SDRAM are
burst oriented; accesses start at a selected location
and continue for a programmed number of locations
in a programmed sequence. Accesses begin with
the registration of a BankActivate command which
is then followed by a Read or Write command.
Fully synchronous operation
Internal pipelined architecture
2M word x 16-bit x 4-bank
Programmable Mode registers
- CAS Latency: 2, or 3
- Burst Length: 1, 2, 4, 8, or full page
- Burst Type: Sequential or Interleaved
- Burst stop function
The SDRAM provides for programmable Read
or Write burst lengths of 1, 2, 4, 8, or full page, with
a burst termination option. An auto precharge
function may be enabled to provide a self-timed row
precharge that is initiated at the end of the burst
sequence. The refresh functions, either Auto or Self
Refresh are easy to use.
Auto Refresh and Self Refresh
4096 refresh cycles/32ms
℃
Automotive Temperature: T = -40~105
A
CKE power down mode
Single +3.3V 0.3V power supply
Interface: LVTTL
54-pin 400 mil plastic TSOP II package
- Pb free and Halogen free
54-ball 8.0 x 8.0 x 1.2mm (max) FBGA package
- Pb free and Halogen free
By having a programmable mode register, the
system can choose the most suitable modes to
maximize its performance. These devices are well
suited for applications requiring high memory
bandwidth and particularly well suited to high
performance PC applications.
Table 1. Key Specifications
AS4C8M16SA-Automotive
-6
tCK3
tAC3
tRAS
tRC
Clock Cycle time(min.)
Access time from CLK (max.)
Row Active time(min.)
Row Cycle time(min.)
6
5
ns
ns
42 ns
60 ns
Table 2.Ordering Information
Part Number
Frequency Package
Temperature Temp Range
AS4C8M16SA-6BAN
AS4C8M16SA-6TAN
166MHz
166MHz
54-Ball FBGA Automotive
54-Pin TSOPII Automotive
-40~105
-40~105
℃
℃
B: indicates FBGA package T: indicates TSOP II package
A: Automotive
N: indicates Pb and Halogen Free
Confidential
1
Rev. 2.0
Mar. /2015
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
