ETC HYB39S256400CT-7.5

HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
256 MBit Synchronous DRAM
•
High Performance:
-7.5
-8
Units
fCK
133
125
MHz
tCK3
7.5
8
ns
tAC3
5.4
6
ns
tCK2
10
10
ns
tAC2
6
6
ns
•
Fully Synchronous to Positive Clock Edge
•
0 to 70 °C operating temperature
•
Four Banks controlled by BA0 & BA1
•
Programmable CAS Latency: 2 & 3
•
Programmable Wrap Sequence: Sequential
or Interleave
•
Programmable Burst Length:
1, 2, 4, 8
•
Full page burst length for
sequential wrap around
•
Multiple Burst Read with Single Write
Operation
•
Automatic
Command
•
Data Mask for Read / Write control (x4, x8)
•
Data Mask for byte control (x16)
•
Auto Refresh (CBR) and Self Refresh
•
Power Down and Clock Suspend Mode
•
8192 refresh cycles / 64 ms (7,8 µs)
•
Random Column Address every CLK
( 1-N Rule)
•
Single 3.3V +/- 0.3V Power Supply
•
LVTTL Interface versions
•
Plastic Packages:
P-TSOPII-54 400mil width (x4, x8, x16)
•
-7.5 parts for PC133 3-3-3 operation
-8 parts for PC100 2-2-2 operation
and
Controlled
Precharge
The HYB39S256400/800/160CT(L) are four bank Synchronous DRAM’s organized as 4 banks x
16MBit x4, 4 banks x 8MBit x8 and 4 banks x 4Mbit x16 respectively. These synchronous devices
achieve high speed data transfer rates for CAS-latencies by employing a chip architecture that
prefetches multiple bits and then synchronizes the output data to a system clock. The chip is
fabricated with INFINEON’s advanced 0.17 µm 256MBit DRAM process technology.
The device is designed to comply with all industry standards set for synchronous DRAM products,
both electrically and mechanically. All of the control, address, data input and output circuits are
synchronized with the positive edge of an externally supplied clock.
Operating the four memory banks in an interleave fashion allows random access operation to occur
at a higher rate than is possible with standard DRAMs. A sequential and gapless data rate is
possible depending on burst length, CAS latency and speed grade of the device.
Auto Refresh (CBR) and Self Refresh operation are supported. These devices operate with a single
3.3V +/- 0.3V power supply and are available in TSOPII packages.
INFINEON Technologies
1
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Ordering Information
Type
Speed Grade
Package
Description
HYB 39S256400CT-7.5
PC133-333-520
P-TSOP-54-2 (400mil)
133MHz 4B x 16M x 4 SDRAM
HYB 39S256400CT-8
PC100-222-620
P-TSOP-54-2 (400mil)
125MHz 4B x 16M x 4 SDRAM
HYB 39S256800CT-7.5
PC133-333-520
P-TSOP-54-2 (400mil)
133MHz 4B x 8M x 8 SDRAM
HYB 39S256800CT-8
PC100-222-620
P-TSOP-54-2 (400mil)
125MHz 4B x 8M x 8 SDRAM
HYB 39S256160CT-7.5
PC133-333-520
P-TSOP-54-2 (400mil)
133MHz 4B x 4M x 16 SDRAM
HYB 39S256160CT-8
PC100-222-620
P-TSOP-54-2 (400mil)
125MHz 4B x 4M x 16 SDRAM
HYB39S256xx0CTL
PC100-xxx-620
P-TSOP-54-2 (400mil)
Low Power Versions (on request)
:Pin Description
CLK
Clock Input
DQx
Data Input /Output
CKE
Clock Enable
DQM, LDQM, UDQM
Data Mask
Power (+3.3V)
CS
Chip Select
VDD
RAS
Row Address Strobe
VSS
Ground
CAS
Column Address Strobe
VDDQ
Power for DQ’s (+ 3.3V)
WE
Write Enable
VSSQ
Ground for DQ’s
A0-A12
Address Inputs
NC
not connected
BA0, BA1
Bank Select
INFINEON Technologies
2
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Pinouts
16 M x 16
32 M x 8
64 M x 4
VDD
VDD
VDD
DQ0
DQ0
N.C.
VDDQ
VDDQ
VDDQ
DQ1
DQ2
N.C.
DQ1
N.C.
DQ0
VSSQ
VSSQ
VSSQ
DQ3
DQ4
N.C.
DQ2
N.C.
N.C.
VDDQ
VDDQ
VDDQ
DQ5
DQ6
N.C.
DQ3
N.C.
DQ1
VSSQ
VSSQ
VSSQ
DQ7
N.C.
N.C.
VDD
VDD
VDD
LDQM
WE
CAS
RAS
CS
BA0
BA1
A10/AP
A0
A1
A2
A3
N.C.
WE
CAS
RAS
CS
BA0
BA1
A10/AP
A0
A1
A2
A3
N.C.
WE
CAS
RAS
CS
BA0
BA1
A10/AP
A0
A1
A2
A3
VDD
VDD
VDD
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
VSS
VSS
VSS
N.C.
DQ7
DQ15
VSSQ
VSSQ
VSSQ
N.C.
DQ3
N.C.
DQ6
DQ14
DQ13
VDDQ
VDDQ
VDDQ
N.C.
N.C.
N.C.
DQ5
DQ12
DQ11
VSSQ
VSSQ
VSSQ
N.C.
DQ2
N.C.
DQ4
DQ10
DQ9
VDDQ
VDDQ
VDDQ
N.C.
N.C.
DQ8
VSS
VSS
VSS
N.C.
DQM
CLK
CKE
A12
A11
A9
A8
A7
A6
A5
A4
N.C.
DQM
CLK
CKE
A12
A11
A9
A8
A7
A6
A5
A4
N.C.
UDQM
CLK
CKE
A12
A11
A9
A8
A7
A6
A5
A4
VSS
VSS
VSS
TSOPII-54 (400 mil x 875 mil, 0.8 mm pitch)
SPP04126
Pinout for x4, x8 & x16 organised 256M-DRAMs
INFINEON Technologies
3
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Column Address
Counter
Column Address
Buffer
Row Address
Buffer
Row
Decoder
Row
Decoder
Row
Decoder
Row
Decoder
Memory
Array
Memory
Array
Memory
Array
Memory
Array
8196
x 2048
x 4 Bit
Input Buffer
Bank 1
8192
x 2048
x 4 Bit
Bank 2
8192
x 2048
x 4 Bit
Output Buffer
Refresh Counter
Column Decoder
Sense amplifier & I(O) Bus
Bank 0
Column Decoder
Sense amplifier & I(O) Bus
A0 - A12,
BA0, BA1
Column Decoder
Sense amplifier & I(O) Bus
Row Addresses
A0 - A9, A11, AP,
BA0, BA1
Column Decoder
Sense amplifier & I(O) Bus
Column Addresses
Bank 3
8192
x 2048
x 4 Bit
Control Logic &
Timing Generator
CLK
CKE
CS
RAS
CAS
WE
DQM
DQ0 - DQ3
SPB04127_2
Block Diagram for 64M x 4 SDRAM ( 13 / 11 / 2 addressing)
INFINEON Technologies
4
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Column Address
Counter
Column Address
Buffer
Row Address
Buffer
Row
Decoder
Row
Decoder
Row
Decoder
Row
Decoder
Memory
Array
Memory
Array
Memory
Array
Memory
Array
8192
x 1024
x 8 Bit
Input Buffer
Bank 1
8192
x 1024
x 8 Bit
Bank 2
8192
x 1024
x 8 Bit
Output Buffer
Refresh Counter
Column Decoder
Sense amplifier & I(O) Bus
Bank 0
Column Decoder
Sense amplifier & I(O) Bus
A0 - A12,
BA0, BA1
Column Decoder
Sense amplifier & I(O) Bus
Row Addresses
A0 - A9, AP,
BA0, BA1
Column Decoder
Sense amplifier & I(O) Bus
Column Addresses
Bank 3
8192
x 1024
x 8 Bit
Control Logic &
Timing Generator
CLK
CKE
CS
RAS
CAS
WE
DQM
DQ0 - DQ7
SPB04128
Block Diagram for 32M x 8 SDRAM ( 13 / 10 / 2 addressing)
INFINEON Technologies
5
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
A0 - A12,
BA0, BA1
Column Address
Counter
Column Address
Buffer
Row Address
Buffer
Row
Decoder
Row
Decoder
Bank 0
8192 x 512
x 16 Bit
Input Buffer
Memory
Array
Bank 1
8192 x 512
x 16 Bit
Memory
Array
Bank 2
8192 x 512
x 16 Bit
Output Buffer
Row
Decoder
Column Decoder
Sense amplifier & I(O) Bus
Memory
Array
Refresh Counter
Row
Decoder
Column Decoder
Sense amplifier & I(O) Bus
Column Decoder
Sense amplifier & I(O) Bus
Row Addresses
A0 - A8, AP,
BA0, BA1
Column Decoder
Sense amplifier & I(O) Bus
Column Addresses
Memory
Array
Bank 3
8192 x 512
x 16 Bit
Control Logic &
Timing Generator
CLK
CKE
CS
RAS
CAS
WE
DQMU
DQML
DQ0 - DQ15
SPB04129
Block Diagram for 16M x16 SDRAM ( 13 / 9 / 2 addressing)
INFINEON Technologies
6
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Signal Pin Description
Pin
Type
Signal Polarity Function
CLK
Input
Pulse
Positive The system clock input. All of the SDRAM inputs are
Edge
sampled on the rising edge of the clock.
CKE
Input
Level
Active
High
Activates the CLK signal when high and deactivates the
CLK signal when low, thereby initiating either the Power
Down mode, Suspend mode, or the Self Refresh mode.
CS
Input
Pulse
Active
Low
CS enables the command decoder when low and disables
the command decoder when high. When the command
decoder is disabled, new commands are ignored but
previous operations continue.
RAS
CAS
WE
Input
Pulse
Active
Low
When sampled at the positive rising edge of the clock,
CAS, RAS, and WE define the command to be executed by
the SDRAM.
A0 - A12
Input
Level
–
During a Bank Activate command cycle, A0-A12 define the
row address (RA0-RA12) when sampled at the rising clock
edge.
During a Read or Write command cycle, A0-An define the
column address (CA0-CAn) when sampled at the rising
clock edge.CAn depends upon the SDRAM organization:
64M x4 SDRAM CAn = CA9, CA11 (Page Length = 2048 bits)
32M x8 SDRAM
CAn = CA9
(Page Length = 1024 bits)
16M x16 SDRAM
CAn = CA8
(Page Length = 512 bits)
In addition to the column address, A10(= AP) is used to
invoke the autoprecharge operation at the end of the burst
read or write cycle. If A10 is high, autoprecharge is
selected and BA0, BA1 defines the bank to be precharged.
If A10 is low, autoprecharge is disabled.
During a Precharge command cycle, A10 (= AP) is used in
conjunction with BA0 and BA1 to control which bank(s) to
precharge. If A10 is high, all four banks will be precharged
regardless of the state of BA0 and BA1. If A10 is low, then
BA0 and BA1 are used to define which bank to precharge.
BA0, BA1 Input
DQx
Level
–
Bank Select Inputs. Bank address inputs selects which of
the four banks a command applies to.
Input
Level
Output
–
Data Input/Output pins operate in the same manner as on
conventional DRAMs.
INFINEON Technologies
7
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Pin
Type
Signal Polarity Function
DQM
LDQM
UDQM
Input
Pulse
VDD
VSS
VDDQ
VSSQ
Active
High
The Data Input/Output mask places the DQ buffers in a
high impedance state when sampled high. In Read mode,
DQM has a latency of two clock cycles and controls the
output buffers like an output enable. In Write mode, DQM
has a latency of zero and operates as a word mask by
allowing input data to be written if it is low but blocks the
write operation if DQM is high.
One DQM input is present in x4 and x8 SDRAMs, LDQM
and UDQM controls the lower and upper bytes in x16
SDRAMs.
Supply –
–
Power and ground for the input buffers and the core logic.
Supply –
–
Isolated power supply and ground for the output buffers to
provide improved noise immunity.
INFINEON Technologies
8
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Operation Definition
All of SDRAM operations are defined by states of control signals CS, RAS, CAS, WE, and DQM at
the positive edge of the clock. The following list shows the truth table for the operation commands.
Operation
Device
State
CKE
n-1
CKE
n
DQM
BA0
BA1
AP=
A10
Addr
.
CS
RAS
CAS
WE
Bank Active
Bank Precharge
Idle3
H
X
X
V
V
V
L
L
H
H
Any
H
X
X
V
L
X
L
L
H
L
Precharge All
Any
H
X
X
X
H
X
L
L
H
L
Write
Active 3
H
X
X
V
L
V
L
H
L
L
Write with Autoprecharge
Active3
H
X
X
V
H
V
L
H
L
L
Read
Active 3
H
X
X
V
L
V
L
H
L
H
Read with Autoprecharge
Active3
H
X
X
V
H
V
L
H
L
H
Mode Register Set
Idle
H
X
X
V
V
V
L
L
L
L
No Operation
Any
H
X
X
X
X
X
L
H
H
H
Burst Stop
Active
H
X
X
X
X
X
L
H
H
L
Device Deselect
Any
H
X
X
X
X
X
H
X
X
X
Auto Refresh
Idle
H
H
X
X
X
X
L
L
L
H
Self Refresh Entry
Idle
H
L
X
X
X
X
Self Refresh Exit
Idle
(Self
Refr.)
L
H
X
X
X
X
Clock Suspend Entry
Active
H
L
X
X
X
X
Power Down Entry
(Precharge or active
standby)
Idle
Clock Suspend Exit
Power Down Exit
Data Write/Output Enable
H
L
X
X
X
X
Active
L
H
X
X
X
X
Any
(Power
Down)
L
H
X
X
X
X
Active 4
L
L
L
H
H
X
X
X
L
H
H
X
X
X
X
X
H
X
X
X
L
H
H
H
X
X
X
X
H
X
X
X
L
H
H
L
Active
H
X
L
X
X
X
X
X
X
X
Data Write/Output Disable Active
H
X
H
X
X
X
X
X
X
X
Notes
1. V = Valid, x = Don’t Care, L = Low Level, H = High Level
2. CKEn signal is input level when commands are provided, CKEn-1 signal is input level one clock before the
commands are provided.
3. This is the state of the banks designated by BA0, BA1 signals.
4. Power Down Mode can not be entered in a burst cycle. When this command asserted in the burst mode cycle
device is in clock suspend mode.
INFINEON Technologies
9
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Mode Register Set Table
BA1 BA0 A12 A11 A10 A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
Address Bus (Ax)
Operation Mode
CAS Latency
BT
Burst Length
Mode Register (Mx)
Operation Mode
Burst Type
M9
0
Mode
burst read / burst write
M3
Type
0
Sequential
1
burst read / single write
1
Interleave
Burst Length
CAS Latency
M6
M5
M4
Latency
0
0
0
Reserved
0
0
1
Reserved
0
1
0
2
0
1
1
3
1
0
0
1
0
1
1
1
0
1
1
1
INFINEON Technologies
Reserved
10
M2
M1
M0
0
0
0
Length
Sequential
Interleave
0
1
1
0
1
2
2
0
1
0
4
4
0
1
1
8
8
1
0
0
1
0
1
1
1
0
1
1
1
Reserved
Reserved
Full page
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Power On and Initialization
The default power on state of the mode register is supplier specific and may be undefined.
The following power on and initialization sequence guarantees the device is preconditioned to each
users specific needs. Like a conventional DRAM, the Synchronous DRAM must be powered up and
initialized in a predefined manner.During power on, all VDD and VDDQ pins must be built up
simultaneously to the specified voltage when the input signals are held in the “NOP” state. The
power on voltage must not exceed VDD +0.3V on any of the input pins or VDD supplies. The CLK
signal must be started at the same time. After power on, an initial pause of 200 µs is required
followed by a precharge of all banks using the precharge command. To prevent data contention on
the DQ bus during power on, it is required that the DQM and CKE pins be held high during the initial
pause period. Once all banks have been precharged, the Mode Register Set Command must be
issued to initialize the Mode Register. A minimum of eight Auto Refresh cycles (CBR) are also
required.These may be done before or after programming the Mode Register. Failure to follow these
steps may lead to unpredictable start-up modes.
Programming the Mode Register
The Mode register designates the operation mode at the read or write cycle. This register is
divided into 4 fields. A Burst Length Field to set the length of the burst, an Addressing Selection bit
to program the column access sequence in a burst cycle (interleaved or sequential), a CAS Latency
Field to set the access time at clock cycle and a Operation mode field to differentiate between
normal operation (Burst read and burst Write) and a special Burst Read and Single Write mode.
After the initial power up, the mode set operation must be done before any activate command . Any
content of the mode register can be altered by re-executing the mode set command. All banks must
be in precharged state and CKE must be high at least one clock before the mode set operation. After
the mode register is set, a Standby or NOP command is required. Low signals of RAS, CAS, and
WE at the positive edge of the clock activate the mode set operation. Address input data at this
timing defines parameters to be set as shown in the previous table.
Read and Write Operation
When RAS is low and both CAS and WE are high at the positive edge of the clock, a RAS cycle
starts. According to address data, a word line of the selected bank is activated and all of sense
amplifiers associated to the wordline are set. A CAS cycle is triggered by setting RAS high and CAS
low at a clock timing after a necessary delay, tRCD , from the RAS timing. WE is used to define either
a read (WE = H) or a write (WE = L) at this stage.
SDRAM provides a wide variety of fast access modes. In a single CAS cycle, serial data read
or write operations are allowed at up to a 133 MHz data rate. The numbers of serial data bits are the
burst length programmed at the mode set operation, i.e., one of 1, 2, 4, 8 and full page. Column
addresses are segmented by the burst length and serial data accesses are done within this
boundary. The first column address to be accessed is supplied at the CAS timing and the
subsequent addresses are generated automatically by the programmed burst length and its
sequence. For example, in a burst length of 8 with interleave sequence, if the first address is ‘2’,
then the rest of the burst sequence is 3, 0, 1, 6, 7, 4, and 5.
Full page burst operation is only possible using sequential burst type and page length is a function
of the I/O organisation and column addressing. Full page burst operation does not self terminate
INFINEON Technologies
11
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
once the burst length has been reached. In other words, unlike burst lengths of 2, 4 or 8, full page
burst continues until it is terminated using other commands.
Similar to the page mode of conventional DRAM’s, burst read or write accesses on any column
address are possible once the RAS cycle latches the sense amplifiers. The maximum tRAS or the
refresh interval time limits the number of random column accesses. A new burst access can be
done even before the previous burst ends. The interrupt operation at every clock cycle is supported.
When the previous burst is interrupted, the remaining addresses are overridden by the new address
with the full burst length. An interrupt which accompanies an operation change from a read to a write
is possible by exploiting DQM to avoid bus contention.
When two or more banks are activated sequentially, interleaved bank read or write operations
are possible. With the programmed burst length, alternate access and precharge operations on two
or more banks can realize fast serial data access modes among many different pages. Once two or
more banks are activated, column to column interleave operation can be performed between
different pages.
Burst Length and Sequence:
Burst
Length
Starting Address
(A2 A1 A0)
Sequential Burst Addressing
(decimal)
2
xx0
xx1
0, 1
1, 0
4
x00
x01
x10
x11
0, 1, 2,
1, 2, 3,
2, 3, 0,
3, 0, 1,
8
000
001
010
011
100
101
110
111
Full Page
nnn
0
1
2
3
4
5
6
7
1
2
3
4
5
6
7
0
2
3
4
5
6
7
0
1
3
4
5
6
7
0
1
2
Interleave Burst Addressing
(decimal)
0, 1
1, 0
0,
1,
2,
3,
3
0
1
2
4
5
6
7
0
1
2
3
5
6
7
0
1
2
3
4
Cn, Cn+1, Cn+2
6
7
0
1
2
3
4
5
7
0
1
2
3
4
5
6
0
1
2
3
4
5
6
7
1
0
3
2
5
4
7
6
2
3
0
1
6
7
4
5
1, 2, 3
0, 3, 2
3, 0, 1
2, 1, 0
3
2
1
0
7
6
5
4
4
5
6
7
0
1
2
3
5
4
7
6
1
0
3
2
6
7
4
5
2
3
0
1
7
6
5
4
3
2
1
0
not supported
Refresh Mode
SDRAM has two refresh modes, Auto Refresh and Self Refresh. Auto Refresh is similar to the
CAS -before-RAS refresh of conventional DRAMs. All banks must be precharged before applying
any refresh mode. An on-chip address counter increments the word and the bank addresses and no
bank information is required for both refresh modes.
The chip enters the Auto Refresh mode, when RAS and CAS are held low and CKE and WE
are held high at a clock timing. The mode restores word line after the refresh and no external
precharge command is necessary. A minimum tRC time is required between two automatic
INFINEON Technologies
12
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
refreshes in a burst refresh mode. The same rule applies to any access command after the
automatic refresh operation.
The chip has an on-chip timer and the Self Refresh mode is available. The mode restores the
word lines after RAS, CAS, and CKE are low and WE is high at a clock timing. All of external control
signals including the clock are disabled. Returning CKE to high enables the clock and initiates the
refresh exit operation. After the exit command, at least one tRC delay is required prior to any access
command.
DQM Function
DQM has two functions for data I/O read and write operations. During reads, when it turns to
“high“ at a clock timing, data outputs are disabled and become high impedance after two clock delay
(DQM Data Disable Latency tDQZ ). It also provides a data mask function for writes. When DQM is
activated, the write operation at the next clock is prohibited (DQM Write Mask Latency tDQW = zero
clocks).
Suspend Mode
During normal access mode, CKE is held high enabling the clock. When CKE is low, it freezes
the internal clock and extends data read and write operations. One clock delay is required for mode
entry and exit (Clock Suspend Latency tCSL).
Power Down
In order to reduce standby power consumption, a power down mode is available. All banks
must be precharged and the necessary Precharge delay (trp) must occur before the SDRAM can
enter the Power Down mode. Once the Power Down mode is initiated by holding CKE low, all of the
receiver circuits except CLK and CKE are gated off. The Power Down mode does not perform any
refresh operations, therefore the device can’t remain in Power Down mode longer than the Refresh
period (tref) of the device. Exit from this mode is performed by taking CKE “high“. One clock delay
is required for power down mode entry and and exit.
Auto Precharge
Two methods are available to precharge SDRAMs. In an automatic precharge mode, the CAS
timing accepts one extra address, CA10, to determine whether the chip restores or not after the
operation. If CA10 is high when a Read Command is issued, the Read with Auto-Precharge
function is initiated. If CA10 is high when a Write Command is issued, the Write with AutoPrecharge function is initiated. The SDRAM automatically enters the precharge operation a time
delay equal to tWR (“write recovery time”) after the last data in.
Precharge Command
There is also a separate precharge command available. When RAS and WE are low and CAS is
high at a clock timing, it triggers the precharge operation. Three address bits, BA0, BA1 and A10 are
used to define banks as shown in the following list. The precharge command can be imposed one
clock before the last data out for CAS latency = 2 and two clocks before the last data out for CAS
latency = 3. Writes require a time delay twr (“write recovery time”) of 2 clocks minimum from the last
data out to apply the precharge command.
INFINEON Technologies
13
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Bank Selection by Address Bits
A10 BA0 BA1
0
0
0
Bank 0
0
0
1
Bank 1
0
1
0
Bank 2
0
1
1
Bank 3
1
x
x
all Banks
Burst Termination
Once a burst read or write operation has been initiated, there are several methods in which to
terminate the burst operation prematurely. These methods include using another Read or Write
Command to interrupt an existing burst operation, use a Precharge Command to interrupt a burst
cycle and close the active bank, or using the Burst Stop Command to terminate the existing burst
operation but leave the bank open for future Read or Write Commands to the same page of the
active bank. When interrupting a burst with another Read or Write Command care must be taken to
avoid DQ contention. The Burst Stop Command, however, has the fewest restrictions making it the
easiest method to use when terminating a burst operation before it has been completed. If a Burst
Stop command is issued during a burst write operation, then any residual data from the burst write
cycle will be ignored. Data that is presented on the DQ pins before the Burst Stop Command is
registered will be written to the memory.
INFINEON Technologies
14
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Absolute Maximum Ratings
Operating temperature range .........................................................................................0 to + 70 °C
Storage temperature range......................................................................................– 55 to + 150 °C
Input/output voltage .............................................................................................– 0.3 to V DD+0.3 V
Power supply voltage VDD / V DDQ ............................................................................ – 0.3 to + 4.6 V
Power Dissipation............................................. ..........................................................................1 W
Data out current (short circuit) ................................................................................................ 50 mA
Note: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent
damage of the device. Exposure to absolute maximum rating conditions for extended
periods may affect device reliability.
Recommended Operation and Characteristics:
TA = 0 to 70 oC; VSS = 0 V; VDD = 3.3 V ± 0.3 V, tT = 1 ns
Parameter
Symbol
Limit Values
min.
Unit Notes
max.
Input high voltage
VIH
2.0
VDD+0.3
V
1, 2
Input low voltage
VIL
– 0.3
0.8
V
1, 2
Output high voltage (I OUT = – 4.0 mA)
VOH
2.4
–
V
Output low voltage (I OUT = 4.0 mA)
VOL
–
0.4
V
Input leakage current, any input
(0 V < VIN < VDDQ, all other inputs = 0 V)
II(L)
–5
5
µA
Output leakage current
(DQ is disabled, 0 V < V OUT < VDD)
IO(L)
–5
5
µA
Notes:
1. All voltages are referenced to VSS.
2. Vih may overshoot to VDD + 2.0 V for pulse width of < 4ns with 3.3V. Vil may undershoot to -2.0 V for
pulse width < 4.0 ns with 3.3V. Pulse width measured at 50% points with amplitude measured peak to
DC reference.
Capacitance
TA = 0 to 70 oC; VSS = 0 V; VDD = 3.3 V ± 0.3 V,, f = 1 MHz
Parameter
Symbol
Values
Unit
min.
max.
Input capacitance (CLK)
CI1
2.5
3.5
pF
Input capacitance
CI2
2.5
3.8
pF
CIO
4.0
6.0
pF
(A0-A12, BA0,BA1,RAS, CAS, WE, CS, CKE, DQM)
Input / Output capacitance (DQ)
INFINEON Technologies
15
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Operating Currents
TA = 0 to 70 oC; VSS = 0 V; VDD = 3.3 V ± 0.3 V
(Recommended Operating Conditions unless otherwise noted)
Symb.
Parameter & Test Condition
OPERATING CURRENT
ICC1
-7.5
-8
max.
max.
230
170
Note
mA
tck=tckmin,
All banks operated in random access,
all banks operated in ping-pong manner.
3, 4
tck = min.
ICC2P
2
2
mA
3
tck = min.
ICC2N
40
30
mA
3
NO OPERATING CURRENT
CKE>=VIH(min.)
ICC3N
50
45
mA
3
tck = min., CS = VIH(min),
active state ( max. 4 banks)
CKE<=VIL(max.)
ICC3P
10
10
mA
3
BURST OPERATING CURRENT
tck = min.,
Read command cycling
ICC4
150
100
mA
AUTO REFRESH CURRENT
tck = min., trc=trcmin.,
Auto Refresh command cycling
ICC5
240
220
mA
ICC6
3
3
mA
1.3
1.3
mA
PRECHARGE STANDBY CURRENT in
Power Down Mode
CS =VIH (min.), CKE<=Vil(max)
PRECHARGE STANDBY CURRENT in
Non-Power Down Mode
CS = VIH (min.), CKE>=Vih(min)
SELF REFRESH CURRENT
Self Refresh Mode, CKE=0.2V
tck=infinity
3,4
standard version
L-version
3
Notes:
3. These parameters depend on the cycle rate. All values are measured at 133 MHz operation frequency for
-7.5 devices and at 100 MHz for -8 devices.
Input signals are changed once during tck.
4. These parameters are measured with continuous data stream during read access and all DQ toggling. CL=3
and BL=4 is assumed and the VDDQ current is excluded.
INFINEON Technologies
16
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
AC Characteristics 1)2)
TA = 0 to 70 oC; VSS = 0 V; VDD = 3.3 V ± 0.3 V, tT = 1 ns
Parameter
Symbol
Unit
Limit Values
-7.5
PC133-333
min.
max.
-8
PC100-222
min.
max.
Clock and Clock Enable
Clock Cycle Time
CAS Latency = 3
CAS Latency = 2
tCK
7.5
10
Clock Frequency
CAS Latency = 3
CAS Latency = 2
tCK
–
–
Access Time from Clock
CAS Latency = 3
CAS Latency = 2
tAC
Clock High Pulse Width
Clock Low Pulse Width
Transition time
8
10
–
–
ns
ns
133
100
–
–
125
100
–
–
5.4
6
–
–
6
6
ns
ns
tCH
2.5
–
3
–
ns
tCL
2.5
–
3
–
ns
tT
0.3
1.2
0.5
10
ns
Input Setup Time
tIS
1.5
–
2
–
ns
4
Input Hold Time
tIH
0.8
–
1
–
ns
4
CKE Setup Time
tCKS
1.5
–
2
–
ns
4
CKE Hold Time
tCKH
0.8
–
1
–
ns
4
Mode Register set to Active
delay
tRSC
2
–
2
–
CLK
Power Down Mode Entry Time
tSB
0
7.5
0
8
ns
tRCD
20
–
20
–
ns
5
Row Precharge Time
tRP
20
–
20
–
ns
5
Row Active Time
tRAS
45
100k
48
100k
ns
5
ns
5
ns
5
MHz
MHz
2,
3,
7
Setup and Hold Times
Common Parameters
Row to Column Delay Time
Row Cycle Time
tRC
67
–
70
–
Activate(a) to Activate(b)
Command period
tRRD
15
–
16
–
INFINEON Technologies
17
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Parameter
Symbol
Unit
Limit Values
-7.5
PC133-333
-8
PC100-222
min.
max.
min.
max.
tCCD
1
–
1
–
Refresh Period (8192 cycles)
tREF
–
64
–
64
Self Refresh Exit Time
tSREX
1
–
1
Data Out Hold Time
tOH
3
–
3
–
ns
Data Out to Low Impedance Time
0
–
ns
CAS(a) to CAS(b) Command
period
CLK
Refresh Cycle
ms
CLK 6
Read Cycle
2,
7
tLZ
0
–
Data Out to High Impedance Time
tHZ
3
7
3
8
ns
DQM Data Out Disable Latency
tDQZ
–
2
–
2
CLK
Data Input to Precharge
(write recovery)
tWR
2
–
2
–
CLK 8
DQM Write Mask Latency
tDQW
0
–
0
–
CLK
Write Cycle
INFINEON Technologies
18
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Notes for AC Parameters:
1. For proper power-up see the operation section of this data sheet.
2. AC timing tests have Vil = 0.4 V and Vih = 2.4 V with the timing referenced to the 1.4 V crossover point. The
transition time is meas ured between Vih and Vil. All AC measurements assume tT=1ns with the AC output load
circuit shown in fig.1. Specified tac and toh parameters are measured with a 50 pF only, without any resistive
termination and with an input signal of 1V / ns edge rate between 0.8V and 2.0 V.
t CH
2.4 V
0.4 V
CLOCK
t CL
t SETUP
tT
t HOLD
INPUT
1.4 V
t AC
t LZ
t AC
I/O
t OH
50 pF
OUTPUT
1.4 V
t HZ
SPT03404
Measurement conditions for
tac and toh
fig.1
3. If clock rising time is longer than 1 ns, a time (tT /2 - 0.5) ns has to be added to this parameter.
4. If tT is longer than 1 ns, a time (tT -1) ns has to be added to this parameter.
5. These parameter account for the number of clock cycles and depend on the operating frequency of the clock,
as follows:
the number of clock cycles = specified value of timing period (counted in fractions as a whole number)
6. Self Refresh Exit is a synchronous operation and begins on the 2nd positive clock edge after CKE returns high.
Self Refresh Exit is not complete until a time period equal to tRC is satisfied once the Self Refresh Exit
command is registered.
7. Access time from clock tac is 4.6 ns for PC133 components with no termination and 0 pF load,
Data out hold time toh is 1.8 ns for PC133 components with no termination and 0 pF load.
8. The write recovery time twr = 2 CLK cycles is a digital interlock on this device. Special devices with twr = 1 CLK
for operations at less or equal 83 MHz are available.
INFINEON Technologies
19
9.01
HYB39S256400/800/160CT(L)
256MBit Synchronous DRAM
Package Outlines
0.8
15˚±5˚
26x 0.8 = 20.8
3)
0.35 +0.1
-0.05
0.1 54x
0.5 ±0.1
11.76 ±0.2
0.2 M 54x
28
6 max
54
10.16 ±0.13 2)
0.15 +0.06
-0.03
1±0.05
15˚±5˚
0.1±0.05
Plastic Package P-TSOPII-54
(400 mil, 0.8 mm lead pitch)
Thin Small Outline Package, SMD
1
2.5 max
27
22.22 ±0.13 1)
GPX09039
Index Marking
1)
Does not include plastic or metal protrusion of 0.15 max per side
Does not include plastic protrusion of 0.25 max per side
3)
Does not include dambar protrusion of 0.13 max per side
2)
INFINEON Technologies
20
9.01
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
Timing Diagrams
1. Bank Activate Command Cycle
2. Burst Read Operation
3. Read Interrupted by a Read
4. Read to Write Interval
4.1 Read to Write Interval
4.2 Minimum Read to Write Interval
4.3 Non-Minimum Read to Write Interval
5. Burst Write Operation
6. Write and Read Interrupt
6.1 Write Interrupted by a Write
6.2 Write Interrupted by Read
7. Burst Write & Read with Auto-Precharge
7.1 Burst Write with Auto-Precharge
7.2 Burst Read with Auto-Precharge
8. AC- Parameters
8.1 AC Parameters for a Write Timing
8.2 AC Parameters for a Read Timing
9. Mode Register Set
10. Power on Sequence and Auto Refresh (CBR)
11. Clock Suspension (using CKE)
11. 1 Clock Suspension During Burst Read CAS Latency = 2
11. 2 Clock Suspension During Burst Read CAS Latency = 3
11. 3 Clock Suspension During Burst Write CAS Latency = 2
11. 4 Clock Suspension During Burst Write CAS Latency = 3
12. Power Down Mode and Clock Suspend
13. Self Refresh ( Entry and Exit )
14. Auto Refresh ( CBR )
15. Random Column Read ( Page within same Bank)
15.1 CAS Latency = 2
15.2 CAS Latency = 3
16. Random Column Write ( Page within same Bank)
16.1 CAS Latency = 2
16.2 CAS Latency = 3
17. Random Row Read ( Interleaving Banks) with Precharge
17.1 CAS Latency = 2
17.2 CAS Latency = 3
18. Random Row Write ( Interleaving Banks) with Precharge
18.1 CAS Latency = 2
18.2 CAS Latency = 3
19. Precharge Termination of a Burst
20. Full Page Burst Operation
20.1 Full Page Burst Read, CAS Latency = 2
18.2 Full Page Burst Write, CAS Latency = 3
INFINEON Technologies
21
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
1. Bank Activate Command Cycle
(CAS latency = 3)
T0
T1
T
T
T
T
T
CLK
Address
Bank B
Row Addr.
Bank B
Col. Addr.
t RCD
Command
Bank B
Activate
NOP
Bank B
Row Addr.
Bank A
Row Addr.
t RRD
NOP
Write B
with Auto
Precharge
Bank A
Activate
NOP
Bank B
Activate
t RC
"H" or "L"
SPT03784
2. Burst Read Operation
(Burst Length = 4, CAS latency = 2, 3)
T0
T1
T2
T3
T4
T5
T6
T7
T8
Read A
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
CLK
Command
CAS
latency = 2
t CK2 , DQ’s
CAS
latency = 3
t CK3 , DQ’s
INFINEON Technologies
DOUT A0 DOUT A1 DOUT A2 DOUT A3
DOUT A0 DOUT A1 DOUT A2 DOUT A3
SPT03712
22
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
3. Read Interrupted by a Read
(Burst Length = 4, CAS latency = 2, 3)
T0
T1
T2
T3
T4
T5
T6
T7
T8
Read A
Read B
NOP
NOP
NOP
NOP
NOP
NOP
NOP
CLK
Command
CAS
latency = 2
t CK2 , DQ’s
DOUT A0 DOUT B0 DOUT B1 DOUT B2 DOUT B3
CAS
latency = 3
t CK3 , DQ’s
DOUT A0 DOUT B0 DOUT B1 DOUT B2 DOUT B3
SPT03713
4. Read to Write Interval
4.1 Read to Write Interval
(Burst Length = 4, CAS latency = 3)
T0
T1
T2
T3
T4
T5
T6
T7
T8
CLK
Minimum delay between the Read and Write
Commands = 4 + 1 = 5 cycles
Write latency t DQW of DQMx
DQMx
t DQZ
Command
NOP
Read A
NOP
NOP
DQ’s
NOP
DOUT A0
NOP
Write B
NOP
NOP
DIN B0
DIN B1
DIN B2
Must be Hi-Z before
the Write Command
"H" or "L"
INFINEON Technologies
SPT03787
23
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
4 2. Minimum Read to Write Interval
(Burst Length = 4, CAS latency = 2)
T0
T1
T2
T3
T4
T5
T6
T7
T8
Write A
NOP
NOP
NOP
DIN A0
DIN A1
DIN A2
DIN A3
CLK
t DQW
DQM
t DQZ
1 Clk Interval
Command
NOP
NOP
Bank A
Activate
NOP
Read A
Must be Hi-Z before
the Write Command
CAS
latency = 2
t CK2 , DQ’s
"H" or "L"
SPT03939
4. 3. Non-Minimum Read to Write Interval
(Burst Length = 4, CAS latency = 2, 3)
T0
T1
T2
T3
T4
T5
T6
T7
T8
NOP
NOP
CLK
t DQW
DQM
t DQZ
Command
NOP
Read A
NOP
NOP
Read A
NOP
Write B
Must be Hi-Z before
the Write Command
CAS
latency = 2
t CK2 , DQ’s
DOUT A0 DOUT A1
DIN B0
DIN B1
DIN B2
CAS
latency = 3
t CK3 , DQ’s
DOUT A0
DIN B0
DIN B1
DIN B2
"H" or "L"
INFINEON Technologies
SPT03940
24
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
5. Burst Write Operation
(Burst Length = 4, CAS latency = 2, 3)
T0
T1
T2
T3
T4
T5
T6
T7
T8
NOP
Write A
NOP
NOP
NOP
NOP
NOP
NOP
NOP
DIN A0
DIN A1
DIN A2
DIN A3
don’t care
CLK
Command
DQ’s
The first data element and the Write
are registered on the same clock edge.
INFINEON Technologies
Extra data is ignored after
termination of a Burst.
25
SPT03790
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
6. Write and Read Interrupt
6.1 Write Interrupted by a Write
(Burst Length = 4, CAS latency = 2, 3)
T0
T1
T2
T3
T4
T5
T6
T7
T8
Write B
NOP
NOP
NOP
NOP
NOP
NOP
DIN B1
DIN B2
DIN B3
CLK
1 Clk Interval
Command
NOP
Write A
1 Clk Interval
DQ’s
DIN A0
DIN B0
SPT03791
6.2 Write Interrupted by a Read
(Burst Length = 4, CAS latency = 2, 3)
T0
T1
T2
T3
T4
T5
T6
T7
T8
NOP
Write A
Read B
NOP
NOP
NOP
NOP
NOP
NOP
CLK
Command
CAS
latency = 2
t CK2 , DQ’s
DIN A0
don’t care
CAS
latency = 3
t CK3 , DQ’s
DIN A0
don’t care
DOUT B0 DOUT B1 DOUT B2 DOUT B3
don’t care
Input data for the Write is ignored.
DOUT B0 DOUT B1 DOUT B2 DOUT B3
Input data must be removed from the DQ’s
at least one clock cycle before the Read data
appears on the outputs to avoid data contention.
SPT03719
INFINEON Technologies
26
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
7. Burst Write and Read with Auto Precharge
7.1 Burst Write with Auto-Precharge
(Burst Length = 2, CAS latency = 2, 3 )
T0
T1
Bank A
Active
NOP
T2
T3
T4
T5
T6
NOP
NOP
NOP
NOP
T7
T8
CLK
CAS Latency = 2:
Command
Write A
Auto Precharge
t WR
DIN A0
DQ’s
NOP
NOP
NOP
t RP
*
DIN A1
Activate
CAS Latency = 3:
Command
Bank A
Active
NOP
NOP
Write A
NOP
Auto Precharge
NOP
NOP
t WR
DIN A0
DQ’s
t RP
*
DIN A1
*
Activate
Begin Auto Precharge
Bank can be reactivated after trp
SPT03909 2
7.2 Burst Read with Auto-Precharge
(Burst Length = 4, CAS latency = 2, 3)
T0
T1
T2
T3
T4
T5
T6
T7
T8
Read A
with AP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
CLK
Command
CAS
latency = 2
DQ’s
CAS
latency = 3
DQ’s
*
DOUT A0
DOUT A1
DOUT A2
t RP
DOUT A3
t RP
*
DOUT A0
DOUT A1
DOUT A2
DOUT A3
* Begin Auto Precharge
Bank can be reactivated after trp
INFINEON Technologies
27
SPT03721_2
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
8. AC Parameters
8.1 AC Parameters for a Write Timing
Burst Length = 4, CAS Latency = 2
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CH
t CK2
t CL
CKE
t CKS
t CH
t CKH
Begin Auto
Precharge
Bank B
Begin Auto
Precharge
Bank A
t CS
CS
RAS
CAS
WE
BS
tAH
AP
RBx
RAx
RAy
RAz
RBy
RAz
RBy
t AS
Addr.
RAx
CAx
RBx
RAy
CBx
RAy
DQM
t WR
t RCD
t RP
t RC
Hi-Z
Ax0 Ax1 Ax2 Ax3 Bx0 Bx1 Bx2 Bx3
DQ
Activate
Command
Bank A
Activate
Command
Bank B
Write with
Auto Precharge
Command
Bank A
INFINEON Technologies
t DS
t DH
t RP
t RRD
Ay0 Ay1 Ay2 Ay3
Activate
Write
Command Command
Bank A
Bank A
Write with
Auto Precharge
Command
Bank B
t WR
Precharge Activate
Activate
Command Command Command
Bank A
Bank A
Bank B
SPT03910_2
28
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
8.2 AC Parameters for a Read Timing
Burst Length = 2, CAS Latency = 2
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
T13
CLK
t CH
t CK2
t CL
CKE
t CKH
t CS
Begin Auto
Precharge
Bank B
t CKS
t CH
CS
RAS
CAS
WE
BS
t AH
AP
RAx
RBx
RAy
t AS
Addr.
RAx
CAx
RBx
RAy
RBx
t RRD
t RAS
t RC
DQM
tAC2
t LZ
t OH
t RCD
DQ
Hi-Z
Read
Command
Bank A
Activate
Command
Bank B
29
t RP
t AC2
Ax0
Activate
Command
Bank A
INFINEON Technologies
t HZ
t HZ
Ax1
Read with
Auto Precharge
Command
Bank B
Bx0
Precharge
Command
Bank A
Bx1
Activate
Command
Bank A
SPT03911_2
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
9. Mode Register Set
CAS Latency = 2
T0
T1
T2
T3
T5
T4
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
CKE
t RSC
CS
RAS
CAS
WE
BS
AP
Address Key
Addr.
Precharge
Command
All Banks
Any
Command
Mode Register
Set Command
INFINEON Technologies
SPT03912_2
30
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
10. Power on Sequence and Auto Refresh (CBR)
T2
T3
T4
CKE
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
~
~
~
~
~
~
CLK
T1
~
~
T0
2 Clock min.
Minimum of 8 Refresh Cycles are required
~
~
~
~
High Level
is required
~
~
~ ~
~
~
AP
~
~ ~
~
BS
~
~
~
~ ~
~
WE
~ ~
~
~
~
~ ~
~
CAS
~
~ ~
~
~
~
~ ~
RAS
~
~ ~
~
~
~
~
~
CS
~ ~
~
~
~
~ ~
~
Addr.
~
~
~
~
Address Key
DQM
t RC
~
~
DQ
~
~
t RP
Hi-Z
8th Auto Refresh
Command
Precharge
Command
All Banks
Inputs must be
stable for 200 µs
INFINEON Technologies
1st Auto Refresh
Command
Mode Register
Set Command
Any
Command
SPT03913
31
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
11. Clock Suspension ( Using CKE)
11.1 Clock Suspension During Burst Read CAS Latency = 2
Burst Length = 4, CAS Latency = 2
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK2
CKE
CS
RAS
CAS
WE
BS
AP
RAx
Addr.
RAx
CAx
DQM
t CSL
t CSL
DQ
Hi-Z
Ax0
Activate
Read
Command Command
Bank A
Bank A
INFINEON Technologies
t HZ
t CSL
Ax1
Ax2
Ax3
Clock
Suspend
1 Cycle
Clock
Suspend
2 Cycles
Clock
Suspend
3 Cycles
32
SPT03914
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
11.2 Clock Suspension During Burst Read CAS Latency = 3
Burst Length = 4, CAS Latency = 3
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK3
CKE
CS
RAS
CAS
WE
BS
AP
RAx
Addr.
RAx
CAx
t CSL
t CSL
DQM
t CSL
t HZ
DQ
Hi-Z
Ax0
Activate
Command
Bank A
INFINEON Technologies
Read
Command
Bank A
Ax1
Ax2
Ax3
Clock
Suspend
1 Cycle
Clock
Suspend
2 Cycles
Clock
Suspend
3 Cycles
33
SPT03915
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
11.3 Clock Suspension During Burst Write CAS Latency = 2
Burst Length = 4, CAS Latency = 2
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK2
CKE
CS
RAS
CAS
WE
BS
AP
RAx
Addr.
RAx
CAx
DQM
DQ
Hi-Z
Activate
Command
Bank A
DAx0
DAx1
Clock
Suspend
1 Cycle
DAx2
Clock
Suspend
2 Cycles
DAx3
Clock
Suspend
3 Cycles
Write
Command
Bank A
INFINEON Technologies
SPT03916
34
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
11.4 Clock Suspension During Burst Write CAS Latency = 3
Burst Length = 4, CAS Latency = 3
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK3
CKE
CS
RAS
CAS
WE
BA
A8/AP
RAx
Addr.
RAx
CAx
DQMx
DQ
Hi-Z
DAx0
Activate
Command
Bank A
DAx1
Clock
Suspend
1 Cycle
DAx2
Clock
Suspend
2 Cycles
Clock
Suspend
3 Cycles
Write
Command
Bank A
INFINEON Technologies
DAx3
SPT03917
35
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
12. Power Down Mode and Clock Suspend
Burst Length = 4, CAS Latency = 2
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CKS
t CK2
t CKS
CKE
CS
RAS
CAS
WE
BS
AP
RAx
Addr.
RAx
CAx
DQM
t HZ
DQ
Hi-Z
Ax0 Ax1
Activate
Command
Bank A
Active
Standby
Clock Suspend
Mode Entry
Read
Command
Bank A
Clock Mask
Start
Clock Suspend
Mode Exit
Ax2
Clock Mask
End
Ax3
Precharge
Command
Bank A
Precharge
Standby
Power Down
Mode Entry
Any
Command
Power Down
Mode Exit
SPT03918
INFINEON Technologies
36
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
13. Self Refresh (Entry and Exit)
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
~
~
CLK
~
~
CKE
~
~
t CKS
t CKS
~
~
~
~
CS
~
~
~
~
RAS
~
~
CAS
~
~
~
~
~
~
WE
~
~
BS
~ ~
~
~
AP
~
~
~
~
~
~
Addr.
t SREX
t RC*)
~
~
DQM
Hi-Z
~
~
DQ
All Banks
must be idle
Self Refresh
Entry
Begin Self Refresh
Exit Command
Self Refresh Exit
Command issued
Self Refresh
Exit
Any
Command
*) minimum RAS cycle
time depends on CAS
Latency and trc
INFINEON Technologies
37
SPT03919-2
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
14. Auto Refresh (CBR)
Burst Length = 4, CAS Latency = 2
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK2
CKE
CS
RAS
CAS
WE
BS
AP
RAx
Addr.
RAx
t RC
t RP
DQM
CAx
t RC
(Minimum Interval)
Hi-Z
Ax0 Ax1 Ax2 Ax3
DQ
Precharge Auto Refresh
Command Command
All Banks
Auto Refresh
Command
Activate
Read
Command Command
Bank A
Bank A
SPT03920_2
INFINEON Technologies
38
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
15. Random Column Read (Page within same Bank)
15.1 CAS Latency = 2
Burst Length = 4, CAS Latency = 2
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK2
CKE
CS
RAS
CAS
WE
BS
AP
RAw
Addr.
RAw
RAz
CAw
CAx
CAy
RAz
CAz
DQM
DQ
Hi Z
Aw0 Aw1 Aw2 Aw3 Ax0 Ax1 Ay0 Ay1 Ay2 Ay3
Activate
Command
Bank A
INFINEON Technologies
Read
Command
Bank A
Read
Command
Bank A
Read
Command
Bank A
39
Precharge
Command
Bank A
Activate
Command
Bank A
Az0 Az1 Az2 Az3
Read
Command
Bank A
SPT03921
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
15.2 CAS Latency = 3
Burst Length = 4, CAS Latency = 3
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK3
CKE
CS
RAS
CAS
WE
BS
AP
RAw
Addr.
RAw
RAz
CAw
CAx
CAy
RAz
CAz
DQM
DQ
Hi Z
Aw0 Aw1 Aw2 Aw3 Ax0 Ax1 Ay0 Ay1 Ay2 Ay3
Activate
Command
Bank A
INFINEON Technologies
Read
Command
Bank A
Read
Command
Bank A
Read
Command
Bank A
40
Precharge
Command
Bank A
Activate
Command
Bank A
Read
Command
Bank A SPT03922
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
16. Random Column write (Page within same Bank)
16.1 CAS Latency = 2
Burst Length = 4, CAS Latency = 2
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK2
CKE
CS
RAS
CAS
WE
BS
AP
RBw
Addr.
RBw
RBz
CBx
CBy
DBw0 DBw1 DBw2 DBw3 DBx0
DBx1 DBy0
CBw
RBz
CBz
DQM
Hi Z
DQ
Activate
Write
Command Command
Bank B
Bank B
DBy1 DBy2
Write
Write
Command Command
Bank B
Bank B
DBy3
DBz0
DBz1 DBz2
DBz3
Precharge Activate
Read
Command Command Command
Bank B
Bank B
Bank B
SPT03923_2
INFINEON Technologies
41
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
16.2. CAS Latency = 3
Burst Length = 4, CAS Latency = 3
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK3
CKE
CS
RAS
CAS
WE
BS
AP
RBz
Addr.
RBz
RBz
CBz
CBx
CBy
RBz
CBz
DQM
DQ
Hi Z
DBw0 DBw1 DBw2 DBw3 DBx0 DBx1 DBy0 DBy1 DBy2 DBy3
Activate
Command
Bank B
INFINEON Technologies
Write
Command
Bank B
Write
Command
Bank B
Write
Command
Bank B
42
DBz0 DBz1
Precharge
Command
Bank B
Activate
Command
Bank B
Write
Command
Bank B SPT03924
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
17. Random Row Read (Interleaving Banks) with Precharge
17.1 CAS Latency = 2
Burst Length = 8, CAS Latency = 2
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK2
CKE
High
CS
RAS
CAS
WE
BS
AP
RBx
Addr.
RBx
RBy
RAx
CBx
RAx
CAx
RBy
CBy
t RP
t RCD
DQM
t AC2
Hi-Z
DQ
Activate
Read
Command Command
Bank B
Bank B
Bx0 Bx1 Bx2 Bx3 Bx4 Bx5 Bx6 Bx7 Ax0 Ax1 Ax2 Ax3 Ax4 Ax5 Ax6 Ax7
Activate
Command
Bank A
Precharge Activate
Command Command
Bank B
Bank B
Read
Command
Bank A
INFINEON Technologies
43
By0 By1
Read
Command
Bank B
SPT03925_2
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
17.2 CAS Latency = 3
Burst Length = 8, CAS Latency = 3
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK3
CKE
High
CS
RAS
CAS
WE
BS
AP
RBx
Addr.
RBx
RAx
CBx
RBy
RAx
CAx
RBy
t AC3
t RCD
CBy
t RP
DQM
DQ
Hi-Z
Activate
Command
Bank B
Bx0 Bx1 Bx2 Bx3 Bx4 Bx5 Bx6 Bx7 Ax0 Ax1 Ax2 Ax3 Ax4 Ax5 Ax6 Ax7 By0
Read
Command
Bank B
Read
Command
Bank A
Activate
Command
Bank A
Precharge
Command
Bank B
Activate
Command
Bank B
Read
Command
Bank B
Precharge
Command
Bank A
SPT03926
INFINEON Technologies
44
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
18. Random Row Write (Interleaving Banks) with Precharge
18.1 CAS Latency = 2
Burst Length = 8, CAS Latency = 2
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK2
CKE
High
CS
RAS
CAS
WE
BS
AP
RAx
Addr.
RAx
RBx
CAx
RAy
RBx
CBx
t RCD
RAy
t WR
CAy
t WR
t RP
DQM
Hi-Z
DQ
DAx0
DAx1 DAx2
Activate
Write
Command Command
Bank A
Bank A
DAx3
DAx4 DAx5 DAx6
DAx7
DBx0
DBx1 DBx2 DBx3
Activate
Write
Command Command
Bank B
Bank B
Precharge
Command
Bank A
INFINEON Technologies
45
DBx4
Activate
Command
Bank A
DBx5 DBx6
DBx7 DAy0
DAy1 DAy2
DAy3
DAy4
Precharge
Command
Bank B
Write
Command
Bank A
SPT03927_2
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
18.2 CAS Latency = 3
Burst Length = 8, CAS Latency = 3
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK3
CKE
High
CS
RAS
CAS
WE
BS
AP
RAx
Addr.
RAx
RAy
RBx
CAx
RBx
CBx
t RCD
RAy
t WR
t RP
CAy
t WR
DQM
DQ
Hi-Z
Activate
Command
Bank A
DAx0 DAx1 DAx2 DAx3 DAx4 DAx5 DAx6 DAx7 DBx0 DBx1 DBx2 DBx3 DBx4 DBx5 DBx6 DBx7 DAy0 DAy1 DAy2 DAy3
Write
Command
Bank A
Activate
Command
Bank B
Write
Command
Bank B
Precharge
Command
Bank A
Activate
Command
Bank A
Write
Command
Bank A
Precharge
Command
Bank B
SPT03928
INFINEON Technologies
46
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
19. Precharge termination of a Burst
19.1 CAS Latency = 2
Burst Length = 8 or Full Page, CAS Latency = 2
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
CLK
t CK2
CKE
High
CS
RAS
CAS
WE
BS
AP
RAx
Addr.
RAx
RAz
RAy
CAx
RAy
CAy
t RP
RAz
CAz
t RP
t RP
Ay0 Ay1 Ay2
Az0 Az1 Az2
DQM
DQ
Hi Z
Activate
Command
Bank A
DAx0 DAx1 DAx2 DAx3
Write
Command
Bank A
Precharge Termination
of a Write Burst.
Write Data is masked.
Precharge
Command
Bank A
Read
Command
Bank A
Precharge
Command
Bank A
Read
Command
Bank A
Activate
Command
Bank A
Activate
Command
Bank A
Precharge
Command
Bank A
Precharge Termination
of a Read Burst.
SPT03933
INFINEON Technologies
47
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
20. Full Page Burst Operation
20.1 Full Page Burst Read, CAS Latency = 2
Burst Length = Full Page, CAS Latency = 2
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
~
~
T0
~
~
CLK
~
~
t CK2
High
~
~
CKE
~
~
CS
~
~ ~
~
RAS
~
~ ~
~
CAS
~
~ ~
~
WE
~
~ ~
~
BS
RAx
Addr.
RAx
RBx
RBy
~
~ ~
~
AP
RBx
CBx
RBy
~
~
CAx
t RP
Hi-Z
Ax Ax +1 Ax + 2 Ax - 2
~
~
DQ
~
~ ~
~
DQM
Activate
Command
Bank A
Read
Command
Bank A
Activate
Command
Bank B
Ax -1
Ax+1 Bx
Read
Command
Bank B
The burst counter wraps
from the highest order
page address back to zero
during this time interval.
INFINEON Technologies
Ax
Bx+1 Bx+2 Bx + 3 Bx+ 4 Bx+ 5 Bx + 6
Burst Stop Precharge
Command Command
Bank B
Full Page burst operation does not
terminate when the burst length is satisfied;
the burst counter increments and continues
bursting beginning with the starting address.
48
Activate
Command
Bank B
SPT03929
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
20. Full Page Burst Operation
20.2 Full Page Burst Write, CAS Latency = 3
Burst Length = Full Page, CAS Latency = 3
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22
~
~
T0
~
~
CLK
~
~
t CK3
High
~
~
CKE
~
~
CS
~ ~
~
~
RAS
~ ~
~
~
CAS
~ ~
~
~
WE
~ ~
~
~
BS
RAx
Addr.
RAx
RBx
RBy
~ ~
~
~
AP
RBx
CBx
RBy
~
~
CAx
t RRD
Hi-Z
Ax
Activate
Command
Bank A
Activate
Command
Bank B
Read
Command
Bank A
INFINEON Technologies
Ax +1 Ax+ 2 Ax - 2
~
~
DQ
~ ~
~
~
DQM
Ax -1
Read
Command
Bank B
The burst counter wraps
from the highest order
page address back to zero
during this time interval.
49
Ax
Ax +1 Bx
Bx +1 Bx +2 Bx + 3 Bx+ 4 Bx + 5
Burst Stop Precharge
Command Command
Bank B
Full Page burst operation does not
terminate when the burst length is satisfied;
the burst counter increments and continues
bursting beginning with the starting address.
Activate
Command
Bank B
SPT03930
HYB39S256400/800/160CT(L)
256-MBit Synchronous DRAM
Attention please !
As far as patents or other rights of third parties are concerned, liability is only
assumed for components, not for applications, processes and circuits
implemented within components or assemblies. This infomation describes
the type of components and shall not be considered as assured
characteristics. Terms of delivery and rights to change design reserved.
For questions on technology, delivery and prices please contact INFINEON
Technologies Offices in Munich or the INFINEON Technologies Sales Offices
and Representatives worldwide.
Due to technical requirements components may contain dangerous
substances. For information on the types in question please contact your
nearest INFINEON Technologies office or representative.
Packing
Please use the recycling operators known to you. We can help you - get in
touch with your nearest sales office. By agreement we will take packing
material back, if it is sorted. You must bear the costs of transport. For packing
material that is returned to us unsorted or which we are not obliged to accept,
we shall have to invoice you for any costs incurred.
Components used in life-support devices or systems must be expressly
authorized for such purpose!
Ciritcal components1 of INFINEON Technologies, may only be used in lifesupport devices or systems2 with the express written approval of INFINEON
Technologies.
1. A critical component is a component used in a life-support device or system
whose failure can reasonably be expected to cause the failure of that lifesupport device or system, or to affect the safety or effectiveness of that device
or system.
2. Life support devices or systems are intended (a) to be implanted in the
human body, or (b) to support and/or maintain and sustain human life. If they
fail, it is reasonable to assume that the health of the user may be endangered.
INFINEON Technologies
50