50S116T-5 Просмотр технического описания (PDF) - CERAMATE TECHNICAL
Номер в каталоге
Компоненты Описание
производитель
50S116T-5 Datasheet PDF : 42 Pages
| |||
50S116T
SDRAM
5. PIN DESCRIPTION
PIN NUMBER PIN NAME FUNCTION
DESCRIPTION
20 − 24,
27 − 32
A0 − A10
Address Multiplexed pins for row and column address.
Row address: A0−A10. Column address: A0 − A7.
19
BA
Bank Select Select bank to activate during row address latch time,
or bank to read/write during column address latch time.
2, 3, 5, 6, 8, 9,
11, 12, 39, 40,
42, 43, 45, 46,
48, 49
DQ0 − DQ15
Data Input/
Output
Multiplexed pins for data input and output.
18
CS
Chip Select Disable or enable the command decoder. When
command decoder is disabled, new command is
ignored and previous operation continues.
17
RAS
Row Address Command input. When sampled at the rising edge of
Strobe the clock, RAS , CAS and WE define the
operation to be executed.
16
CAS
Column
Address Referred to RAS
Strobe
15
WE
Write Enable Referred to RAS
36, 14
UDQM/
LDQM
Input/Output The output buffer is placed at Hi-Z (with latency of 2)
Mask when DQM is sampled high in read cycle. In write
cycle, sampling DQM high will block the write operation
with zero latency.
35
CLK
Clock Inputs System clock used to sample inputs on the rising edge
of clock.
34
CKE
Clock Enable CKE controls the clock activation and deactivation.
When CKE is low, Power-down mode, Suspend mode,
or Self Refresh mode is entered.
1, 25
VCC
Power Power for input buffers and logic circuit inside DRAM.
(+3.3V)
26, 50
VSS
Ground Ground for input buffers and logic circuit inside DRAM.
7, 13, 38, 44,
VCCQ
Power Separated power from VCC, used for output buffers to
(+3.3V) for improve noise immunity.
I/O buffer
4, 10, 41, 47
VSSQ
Ground for Separated ground from VSS, used for output buffers to
I/O buffer improve noise immunity.
33, 37
NC
No
No connection
Connection
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN, R.O.C
Tel:886-3-3214525
Fax:886-3-3521052
Page 5 of 42
Email: server@ceramate.com.tw
Http: www.ceramate.com.tw
Rev 1.0 Aug.20,2002
Share Link: 