AS8S512K32PECA Datasheet, PDF (1/8 Pages) Micross Components – Parallel Read/Write Interface

iPEM
16 MB ASYNC SRAM
AS8S512K32PECA
16Mb, 512Kx32 CMOS 5.0V, High Speed Static RAM
Integrated Plastic Encapsulated Microcircuit
FEATURES
Integrated Real-Time Memory Array Solution
No latency or refresh fycles
Parallel Read/Write Interface
User Configurable via multiple enables
Random Access Memory Array
Fast Access Times: 12, 15, 20, and 25ns
TTL Compatible I/O
Fully Static, No Clocks
Surface Mount Package
68 Lead PLCC, No. 99 JEDEC M0-47AE
Small Footprint, 0.990 Sq. In.
Multiple Ground Pins for Maximum Noise Immunity
Single +5V (±5%) Supply Operation
DESCRIPTION
The AS8S512K32 is a high speed, 5V, 16Mb SRAM. The
device is available with access times of 12, 15, 20 and
25ns creating a zero wait state/latency, real-time memory
solution. The high speed, 5v supply voltage and control
lines,make the device ideal for all your real-time computer
memory requirements.
The device can be configured as a 512K x 32 and used to
create a single chip external data /program memory array
solution or via use of the individual chip enable lines, be
reconfigured as a 1M x 16 or 2M x 8.
The device provides a 50+% space savings when compared
to four 512K x 8, 36 pin SOJs. In addition the AS8S512K32
has only a 20pF load on the Addr. lines vs. ~30pF for four
plastic SOJs.
PIN CONFIGURATIONS AND BLOCK DIAGRAM (PECA Package)
DQ17 10
DQ18 11
DQ19 12
Vss 13
DQ20 14
DQ21 15
DQ22 16
DQ23 17
Vcc 18
DQ24 19
DQ25 20
DQ26 21
DQ27 22
Vss 23
DQ28 24
DQ29 25
DQ30 26
60 DQ14
59 DQ13
58 DQ12
57 Vss
56 DQ11
55 DQ10
54 DQ09
53 DQ08
52 Vcc
51 DQ07
50 DQ06
49 DQ05
48 DQ04
47 Vss
46 DQ03
45 DQ02
44 DQ01
PIN NAMES
A0 - A18 Address Inputs
E0\ - E3\ Chip Enables
W\
Write Enables
G\
Output Enable
DQ0 - DQ31 Common Data Input/Output
Vcc
Power (+5V ± 10%)
Vss
Ground
NC
No Connection
BYTE CONTROL TABLE
Chip
Byte
Enable
Control
E0\
DQ0-7
E1\
DQ8-15
E2\
DQ16-23
E3\
DQ24-31
A0-A18
G\ 19
W\
E0\
E1\
E2\
E3\
512K x 32
Memory Array
DQ0-DQ7
DQ8-DQ15
DQ16-DQ23
DQ24-DQ31
AS8S512K32PECA
Rev. 0.3 03/11
Micross Components reserves the right to change products or specifications without notice.
1