notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the lat-
est version of this device specification before relying on any published information and before placing orders for products.
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reason-
ably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications
unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. — www.issi.com
Rev. D
08/16/2012
1
IS43/46DR83200A, IS43/46DR16160A
GENERAL DESCRIPTION
Read and write accesses to the DDR2 SDRAM are burst oriented; accesses start at a selected location and continue
for a burst length of four or eight in a programmed sequence. Accesses begin with the registration of an Active
command, which is then followed by a Read or Write command. The address bits registered coincident with the active
command are used to select the bank and row to be accessed (BA0-BA1 select the bank; A0-A12 select the row). The
address bits registered coincident with the Read or Write command are used to select the starting column location
(A0-A8 for x16) and (A0-A9 for x8) for the burst access and to determine if the auto precharge A10 command is to
be issued. Prior to normal operation, the DDR2 SDRAM must be initialized. The following sections provide detailed
information covering device initialization, register definition, command descriptions and device operation.
FUNCTIONAL BLOCK DIAGRAM
DMa - DMb
RDQS,
RDQS
Notes:
1. An:n = no. of address pins - 1
2. DQm: m = no. of data pins - 1
3. For x8 devices:
DMa - DMb = DM; DQSa - DQSb = DQS;
DQSa
-
DQSb
=
DQS;
RDQS,
RDQS
available only for x8
4. For x16 devices:
DMa - DMb = UDM, LDM; DQSa - DQSb = UDQS, LDQS;
DQSa
-
DQSb
=
UDQS, LDQS
2
Integrated Silicon Solution, Inc. — www.issi.com
Rev. D
08/16/2012
IS43/46DR83200A, IS43/46DR16160A
PIN DESCRIPTION TABLE
Symbol
CK,
CK
Type
Input
Function
Clock: CK and
CK
are differential clock inputs. All address and control input signals
are sampled on the crossing of the positive edge of CK and negative edge of
CK.
Output (read) data is referenced to the crossings of CK and
CK
(both directions of
crossing).
Clock Enable: CKE HIGH activates, and CKE LOW deactivates, internal clock signals
and device input buffers and output drivers. Taking CKE LOW provides Precharge
Power-Down and Self Refresh operation (all banks idle), or Active Power-Down (row
Active in any bank). CKE is synchronous for power down entry and exit, and for self
refresh entry. CKE is asynchronous for self refresh exit. After VREF has become
stable during the power on and initialization sequence, it must be maintained for
proper operation of the CKE receiver. For proper self-refresh entry and exit, VREF
must be maintained to this input. CKE must be maintained HIGH throughout read and
write accesses. Input buffers, excluding CK,
CK,
ODT and CKE are disabled during
power-down. Input buffers, excluding CKE, are disabled during self refresh.
Chip Select: All commands are masked when
CS
is registered HIGH.
CS
provides for
external Rank selection on systems with multiple Ranks.
CS
is considered part of the
command code.
On Die Termination: ODT (registered HIGH) enables termination resistance internal
to the DDR2 SDRAM. When enabled, ODT is applied to each DQ, DQS,
DQS,
DM
signals. The ODT pin will be ignored if the EMR(1) is programmed to disable ODT.
Command Inputs:
RAS, CAS
and
WE
(along with
CS)
define the command being
entered.
Input Data Mask: DM is an input mask signal for write data. Input data is masked
when DM is sampled HIGH coincident with that input data during a Write access. DM
is sampled on both edges of DQS. Although DM pins are input only, the DM loading
matches the DQ and DQS loading. For x8, the function of DM is enabled by EMRS
command to EMR(1) [A11].
Bank Address Inputs: BA0 - BA1 define to which bank an Active, Read, Write or
Precharge command is being applied. Bank address also determines if the mode
register or one of the extended mode registers is to be accessed during a MRS or
EMRS command cycle.
Address Inputs: Provide the row address for Active commands and the column
address and Auto Precharge bit for Read/Write commands to select one location
out of the memory array in the respective bank. A10 is sampled during a Precharge
command to determine whether the Precharge applies to one bank (A10 LOW) or all
banks (A10 HIGH). If only one bank is to be precharged, the bank is selected by BA0 -
BA1. The address inputs also provide the op-code during MRS or EMRS commands.
CKE
Input
CS
Input
ODT
RAS, CAS, WE
Input
Input
DM (x8) or
UDM, LDM (x16)
Input
BA0 - BA1
Input
A0 - A12
Input
Integrated Silicon Solution, Inc. — www.issi.com
Rev. D
08/16/2012
3
IS43/46DR83200A, IS43/46DR16160A
Symbol
DQ0-7 x8
DQ0-15 x16
Type
Input/
Output
Function
Data Input/Output: Bi-directional data bus.
Data Strobe: output with read data, input with write data. Edge-aligned with read data,
centered in write data. The data strobes DQS(n) may be used in single ended mode
or paired with optional complementary signals
DQS(n)
to provide differential pair
signaling to the system during both reads and writes. A control bit at EMR(1)[A10]
enables or disables all complementary data strobe signals.
Input/
Output
x8
DQS corresponds to the data on DQ0-DQ7
RDQS corresponds to the Read data on DQ0-DQ7, and is enabled by EMRS
command to EMR(1) [A11].
x16
LDQS corresponds to the data on DQ0-DQ7
UDQS corresponds to the data on DQ8-DQ15
NC
VDDQ
VSSQ
VDDL
VSSDL
VDD
VSS
VREF
Supply
Supply
Supply
Supply
Supply
Supply
Supply
No Connect: No internal electrical connection is present.
DQ Power Supply: 1.8 V +/- 0.1 V
DQ Ground
DLL Power Supply: 1.8 V +/- 0.1 V
DLL Ground
Power Supply: 1.8 V +/- 0.1 V
Ground
Reference voltage
DQS, (DQS)
RDQS, (RDQS) x8
UDQS, (UDQS),
LDQS, (LDQS) x16
4
Integrated Silicon Solution, Inc. — www.issi.com
Rev. D
08/16/2012
IS43/46DR83200A, IS43/46DR16160A
PIN CONFIGURATION
PACKAGE CODE: B 60 BALL TW-BGA (Top View) (8.00 mm x 10.5 mm Body, 0.8 mm Ball Pitch)
The secret of single-chip microcomputer: learning single-chip microcomputer psychology course 1. Don't say "give me a code" when you see someone else's reply. You should think about why. When you figu...
I want to make a very simple thing. I want to use a small numeric keyboard to input the numbers 0000~9999, separated by ., and then save it as a TXT file. Then I can transfer this data to the computer...
Excuse me, the image from my camera has black edges on the left and right sides. The left side is slightly thinner, and the right side is thicker. I am using a 6410 development board, and the camera d...
In the busy and fast-paced life, the external noise often makes it difficult for us to calm down and enjoy life. Ecocoon is a design that can block the noise for you. By selecting high, medium and low...
Compared with traditional magnetic card and IC card technology, radio frequency identification ( RFID ) technology has the characteristics of non-contact, fast reading speed and no wear, and has devel...
[i=s]This post was last edited by littleshrimp on 2015-10-27 11:25[/i] I used CC254X to test the HidEmuKbd routine. HidEmuKbd set the pairing password 654321. After broadcasting, the mobile phone can ...
The Mobile Industry Processor Interface (MIPI) Alliance is an organization responsible for promoting the standardization of software and hardware in mobile devices. It has released the D-PHY specif...[Details]
There are three types of mobile TV: one is based on analog TV broadcasting network, another is based on mobile communication network, and the other is based on digital broadcasting network. The f...[Details]
1 Introduction
Ultrasonic waves have strong directivity, slow energy consumption, and can propagate over long distances in a medium, so they are used for distance measurement. Ultrasonic detec...[Details]
Vertical cavity surface emitting lasers (VCSELs) are gradually replacing traditional edge emitting lasers, especially in low bandwidth and short-distance communication systems where cost factors ar...[Details]
The automotive lighting and signal control system is responsible for controlling the vehicle's lighting, signal lights, electric horns, reversing and brake buzzers. Traditional automotive lighting...[Details]
The typical fault troubleshooting listed below is for reference of maintenance personnel.
When the computer is turned on, the indicator light is off and there is no screen display
Mainte...[Details]
Toyohashi University of Technology demonstrated electric field coupled wireless power supply technology using life-size car tires and roads at the wireless technology exhibition "Wireless Technolog...[Details]
Capacitors
are basic components in various electronic devices and are widely used for bypassing, coupling,
filtering
, tuning, etc. in electronic circuits. However, to use capacitors,...[Details]
1. When the slip speed regulating motor is undergoing frequency conversion and energy saving transformation, the original excitation box (referred to as the speed regulating box) and the original s...[Details]
introduction
At present, the research on micron and nanotechnology is very active, which has led to the rapid development of microtechnology and micro-mechanical electronic system (MEMS) t...[Details]
The installation locations of DC-DC converters are relatively scattered. DC-DC converters can be found on the power board, main board, logic control board and other circuit boards of PDP color TVs....[Details]
0 Introduction
With the rapid development of modern power electronics technology, various power electronic devices have been widely used in various fields such as power systems, industry, an...[Details]
Globally, the market for airbags and other restraint systems consists of different geographical regions, each with its own characteristics and needs. North America first introduced airbags in mass-...[Details]
In the test of the electronic ignition module, in order to simulate the real working conditions of the electronic ignition system, the electronic ignition module is often placed in an environment h...[Details]
MCU
京公网安备 11010802033920号
EEWORLD
