AS4C4M16SA-Automotive
64M – (4M x 16 bit) Synchronous DRAM (SDRAM)
Confidential
Features
Advanced (Rev. 1.0- 63nm, Mar. /2014)
Overview
Fast access time from clock: 5.4 ns
Fast clock rate: 166 MHz
Fully synchronous operation
AEC-Q100 Compliant
Internal pipelined architecture
1M 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
- Optional drive strength control
Auto Refresh and Self Refresh
4096 refresh cycles/32ms
The 64Mb SDRAM is a high-speed CMOS
synchronous DRAM containing 64 Mbits. It is internally
configured as 4 Banks of 1M 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
Bank Activate command which is then followed by a
Read or Write command.
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. 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.
Automotive Ambient Temperature: -40~105°C
CKE power down mode
Single +3.3V 0.3V power supply
Interface: LVTTL
54-pin 400 mil plastic TSOP II package
54-ball 8.0 x 8.0 x 1.2mm (max) FBGA package
- All parts ROHS Compliant
Table 1. Key Specifications
AS4C4M16SA
-6
6 ns
5.4 ns
42ns
60ns
tCK3
tAC3
tRAS
tRC
Clock Cycle time(min.)
Access time from CLK (max.)
Row Active time(min.)
Row Cycle time(min.)
Table 2.Ordering Information
Part Number
AS4C4M16SA-6BAN
Frequency Package
166MHz 54-Ball FBGA
166MHz
Temperature Temp Range
Industrial
-40 ~ 105°C
-40 ~ 105°C
AS4C4M16SA-6TAN
54-Pin TSOPII Industrial
B: indicates FBGA package T: indicates TSOP II package
N: indicates Pb and Halogen Free
Confidential
1
Rev. 1.0-63nm
Mar. /2014