Elpida HM534253BZ-8 1 m vram (256-kword x 4-bit) Datasheet

1 M VRAM (256-kword × 4-bit)
E0165H10 (Ver. 1.0)
(Previous ADE-203-204D (Z))
Jul. 6, 2001 (K)
LP
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Description
HM534253B Series
The HM534253B is a 1-Mbit multiport video RAM equipped with a 256-kword × 4-bit dynamic RAM and a
512-word × 4-bit SAM (serial access memory). Its RAM and SAM operate independently and
asynchronously. It can transfer data between RAM and SAM. In addition, it has two modes to realize fast
writing in RAM. Block write and flash write modes clear the data of 4-word × 4-bit and the data of one row
(512-word × 4-bit) respectively in one cycle of RAM. And the HM534253B makes split transfer cycle
possible by dividing SAM into two split buffers equipped with 256-word × 4-bit each. This cycle can transfer
data to SAM which is not active, and enables a continuous serial access.
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Features
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• Multiport organization
Asynchronous and simultaneous operation of RAM and SAM capability
 RAM: 256-kword × 4-bit
 SAM: 512-word × 4-bit
• Access time
 RAM: 60 ns/70 ns/80 ns/100 ns max
 SAM: 20 ns/22 ns/25 ns/25 ns max
• Cycle time
 RAM: 125 ns/135 ns/150 ns/180 ns min
 SAM: 25 ns/25 ns/30 ns/30 ns min
• Low power
 Active
RAM: 413 mW max
SAM: 275 mW max
 Standby 38.5 mW max
• High-speed page mode capability
• Mask write mode capability
• Bidirectional data transfer cycle between RAM and SAM capability
• Split transfer cycle capability
Elpida Memory, Inc. is a joint venture DRAM company of NEC Corporation and Hitachi, Ltd.
EO
HM534253B Series
• Block write mode capability
• Flash write mode capability
• 3 variations of refresh (8 ms/512 cycles)
 RAS-only refresh
 CAS-before-RAS refresh
 Hidden refresh
• TTL compatible
LP
Ordering Information
Type No.
HM534253BJ-6
HM534253BJ-7
HM534253BJ-8
HM534253BJ-10
HM534253BZ-6
HM534253BZ-7
HM534253BZ-8
HM534253BZ-10
Access Time
Package
60 ns
70 ns
80 ns
100 ns
400-mil 28-pin plastic SOJ (CP-28D)
60 ns
70 ns
80 ns
100 ns
400-mil 28-pin plastic ZIP (ZP-28)
HM534253BJ Series
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VSS
SI/O3
SI/O2
SE
I/O3
I/O2
DSF
CAS
QSF
A0
A1
A2
A3
A7
(Top view)
2
4
6
8
10
12
14
16
18
20
22
24
26
28
1
3
5
7
9
11
13
15
17
19
21
23
25
27
(Bottom view)
Data Sheet E0165H10
2
I/O2
SE
SI/O3
SC
SI/O1
I/O0
WE
RAS
A6
A4
A7
A2
A0
CAS
DSF
I/O3
SI/O2
VSS
SI/O0
DT/OE
I/O1
NC
A8
A5
VCC
A3
A1
QSF
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1
2
3
4
5
6
7
8
9
10
11
12
13
14
HM534253BZ Series
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SC
SI/O0
SI/O1
DT/OE
I/O0
I/O1
WE
NC
RAS
A8
A6
A5
A4
VCC
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Pin Arrangement
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HM534253B Series
Pin Description
Function
A0 – A8
Address inputs
I/O0 – I/O3
RAM port data inputs/outputs
SI/O0 – SI/O3
SAM port data inputs/outputs
RAS
Row address strobe
CAS
Column address strobe
WE
Write enable
DT/OE
Data transfer/output enable
SC
Serial clock
SE
SAM port enable
DSF
Special function input flag
QSF
Special function output flag
VCC
Power supply
VSS
Ground
NC
No connection
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Pin Name
Data Sheet E0165H10
3
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HM534253B Series
Block Diagram
A0 – A8
Row Address
Buffer
Refresh
Counter
Mask
Register
Address Mask
Register
Color
Register
Output
Buffer
Data
Register
Transfer
Gate
Data
Register
Serial Output
Buffer
SI/O0 – SI/O3
Timing Generator
RAS
CAS
DT/OE
WE
DSF
SC
SE
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I/O0 – I/O3
Data Sheet E0165H10
4
Serial Input
Buffer
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Input Data
Control
Input
Buffer
Transfer
Gate
Sense Amplifier & I/O Bus
Column Decoder
Block Write Flash Write
Control
Control
Memory Array
SAM Column Decoder
LP
Serial Address
Counter
Row Decoder
SAM I/O Bus
Column Address
Buffer
QSF
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HM534253B Series
Pin Functions
RAS (input pin): RAS is a basic RAM signal. It is active in low level and standby in high level. Row
address and signals as shown in table 1 are input at the falling edge of RAS. The input level of these signals
determine the operation cycle of the HM534253B.
Table 1
Operation Cycles of the HM534253B
Input Level At The Falling Edge Of RAS
DT/OE WE
SE
DSF
L
X
X
X
H
L
L
H
L
L
H
L
L
H
L
H
H
L
H
H
H
L
H
H
L
H
H
L
H
H
H
H
H
H
H
Operation Mode
X
—
CBR refresh
L
L
X
Write transfer
H
L
X
Pseudo transfer
X
H
X
Split write transfer
X
L
X
Read transfer
X
H
X
Split read transfer
X
L
L
Read/mask write
X
L
H
Mask block write
X
H
X
Flash write
X
L
L
Read/write
H
X
L
H
Block write
H
X
H
X
Color register read/write
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Note: X: H or L.
DSF At The Falling Edge Of CAS
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CAS
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CAS (input pin): Column address and DSF signals are fetched into chip at the falling edge of CAS, which
determines the operation mode of the HM534253B. CAS controls output impedance of I/O in RAM.
A0 – A8 (input pins): Row address is determined by A0 – A8 level at the falling edge of RAS. Column
address is determined by A0 – A8 level at the falling edge of CAS. In transfer cycles, row address is the
address on the word line which transfers data with SAM data register, and column address is the SAM start
address after transfer.
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WE (input pin): W E pin has two functions at the falling edge of RAS and after. When WE is low at the
falling edge of RAS, the HM534253B turns to mask write mode. According to the I/O level at the time, write
on each I/O can be masked. (WE level at the falling edge of RAS don’t care in read cycle.) When WE is high
at the falling edge of RAS, a normal write cycle is executed. After that, WE switches read/write cycles as in a
standard DRAM. In a transfer cycle, the direction of transfer is determined by WE level at the falling edge of
RAS. When WE is low, data is transferred from SAM to RAM (data is written into RAM), and when WE is
high, data is transferred from RAM to SAM (data is read from RAM).
Data Sheet E0165H10
5
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HM534253B Series
I/O0 – I/O3 (input/output pins): I/O pins function as mask data at the falling edge of RAS (in mask write
mode). Data is written only to high I/O pins. Data on low I/O pins are masked and internal data are retained.
After that, they function as input/output pins as those of a standard DRAM. In block write cycle, they
function as address mask data at the falling edges of CAS.
DT/OE (input pin): D T/OE pin functions as DT (data transfer) pin at the falling edge of RAS and as OE
(output enable) pin after that. When DT is low at the falling edge of RAS, this cycle becomes a transfer cycle.
When DT is high at the falling edge of RAS, RAM and SAM operate independently.
LP
SC (input pin): SC is a basic SAM clock. In a serial read cycle, data outputs from an SI/O pin
synchronously with the rising edge of SC. In a serial write cycle, data on an SI/O pin at the rising edge of SC
is fetched into the SAM data register.
SE(input pin): SE pin activates SAM. When SE is high, SI/O is in the high impedance state in serial read
cycle and data on SI/O is not fetched into the SAM data register in serial write cycle. SE can be used as a
mask for serial write because internal pointer is incremented at the rising edge of SC.
SI/O0 – SI/O3 (input/output pins): SI/Os are input/output pins in SAM. Direction of input/output is
determined by the previous transfer cycle. When it was a read transfer cycle, SI/O outputs data. When it was
a pseudo transfer cycle or write transfer cycle, SI/O inputs data.
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DSF (input pin): DSF is a special function data input flag pin. It is set to high at the falling edge of RAS
when new functions such as color register read/write, split transfer, and flash write, are used. DSF is set to
high at the falling edge of CAS when block write is executed.
QSF (output pin): QSF outputs data of address A8 in SAM. QSF is switched from low to high by accessing
address 255 in SAM and from high to low by accessing 511 address in SAM.
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Data Sheet E0165H10
6
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HM534253B Series
Operation of HM534253B
RAM Port Operation
RAM Read Cycle (DT/OE high, CAS high and DSF low at the falling edge of RAS, DSF low at the falling
edge of CAS)
LP
Row address is entered at the RAS falling edge and column address at the CAS falling edge to the device as in
standard DRAM. Then, when WE is high and DT/OE is low while CAS is low, the selected address data
outputs through I/O pin. At the falling edge of RAS, DT/OE and CAS become high to distinguish RAM read
cycle from transfer cycle and CBR refresh cycle. Address access time (tAA) and RAS to column address delay
time (tRAD) specifications are added to enable high-speed page mode.
RAM Write Cycle (Early Write, Delayed Write, Read-Modify-Write) (DT/OE high, CAS high and DSF
low at the falling edge of RAS, DSF low at the falling edge of CAS)
• Normal Mode Write Cycle (WE high at the falling edge of RAS)
When CAS and WE are set low after driving RAS low, a write cycle is executed and I/O data is written in
the selected addresses. When all 4 I/Os are written, WE should be high at the falling edge of RAS to
distinguish normal mode from mask write mode.
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If WE is set low before the CAS falling edge, this cycle becomes an early write cycle and all I/O become
in high impedance. Data is entered at the CAS falling edge.
If WE is set low after the CAS falling edge, this cycle becomes a delayed write cycle. Data is input at the
WE falling. I/O does not become high impedance in this cycle, so data should be entered with OE in high.
• Mask Write Mode (WE low at the falling edge of RAS)
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If WE is set low after tCWD (min) and t AWD (min) after the CAS falling edge, this cycle becomes a readmodify-write cycle and enables read/write at the same address in one cycle. In this cycle also, to avoid I/O
contention, data should be input after reading data and driving OE high.
If WE is set low at the falling edge of RAS, the cycle becomes a mask write mode which writes only to
selected I/O. Whether or not an I/O is written depends on I/O level (mask data) at the falling edge of
RAS. Then the data is written in high I/O pins and masked in low ones and internal data is retained. This
mask data is effective during the RAS cycle. So, in high-speed page mode, the mask data is retained
during the page access.
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Data Sheet E0165H10
7
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HM534253B Series
High-Speed Page Mode Cycle (DT/OE high, CAS high and DSF low at the falling edge of RAS)
High-speed page mode cycle reads/writes the data of the same row address at high speed by toggling CAS
while RAS is low. Its cycle time is one third of the random read/write cycle. In this cycle, read, write, and
block write cycles can be mixed. Note that address access time (tAA), RAS to column address delay time
(tRAD), and access time from CAS precharge (t ACP ) are added. In one RAS cycle, 512-word memory cells of the
same row address can be accessed. It is necessary to specify access frequency within tRASP max (100 µs).
Color Register Set/Read Cycle (CAS high, DT/OE high, WE high and DSF high at the falling edge of RAS)
LP
In color register set cycle, color data is set to the internal color register used in flash write cycle or block write
cycle. 4 bits of internal color register are provided at each I/O. This register is composed of static circuits, so
once it is set, it retains the data until reset. Color register set cycle is just as same as the usual write cycle
except that DSF is set high at the falling edge of RAS, and read, early write and delayed write cycle can be
executed. In this cycle, the HM534253B refreshes the row address fetched at the falling edge of RAS.
Flash Write Cycle (CAS high, DT/OE high, WE low, and DSF high at the falling edge of RAS)
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In a flash write cycle, a row of data (512-word × 4-bit) is cleared to 0 or 1 at each I/O according to the data of
color register mentioned before. It is also necessary to mask I/O in this cycle. When CAS and DT/OE are set
high, WE is low, and DSF is high at the falling edge of RAS, this cycle starts. Then, the row address to clear
is given to row address and mask data is given to I/O. Mask data is as same as that of a RAM write cycle.
High I/O is cleared, low I/O is not cleared and the internal data is retained. Cycle time is the same as those of
RAM read/write cycles, so all bits can be cleared in 1/512 of the usual cycle time. (See figure 1.)
Data Sheet E0165H10
8
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HM534253B Series
Color Register Set Cycle
Flash Write Cycle
Flash Write Cycle
RAS
CAS
Address
Row
Xi
Xj
WE
DSF
I/O
LP
DT/OE
Color Data
Set color register
*1
Execute flash write into each
I/O on row address Xi using
color resister.
Execute flash write into
each I/O on row address
Xj using color resister.
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Note: 1. I/O Mask Data
Low: Mask
High: Non Mask
*1
Figure 1 Use of Flash Write
Block Write Cycle (CAS high, DT/OE high and DSF low at the falling edge of RAS, DSF high at the falling
edge of CAS)
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In a block write cycle, 4 columns of data (4-word × 4-bit) are cleared to 0 or 1 at each I/O according to the
data of color register. Column addresses A0 and A1 are disregarded. The data on I/Os and addresses can be
masked. I/O level at the falling edge of CAS determines the address to be cleared. (See figure 2.) In a page
mode cycle, mixed cycle of normal Read/Write and block write can be allowed by controlling DSF.
• Normal Mode Block Write Cycle (WE high at the falling edge of RAS)
The data on 4 I/Os are all cleared when WE is high at the falling edge of RAS.
• Mask Block Write Mode (WE low at the falling edge of RAS)
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When WE is low at the falling edge of RAS, the HM534253B starts mask block write mode to clear the
data on an optional I/O. The mask data is the same as that of a RAM write cycle. High I/O is cleared, low
I/O is not cleared and the internal data is retained. The mask data is available in the RAS cycle. In page
mode block write cycle, the mask data is retained during the page access.
Data Sheet E0165H10
9
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HM534253B Series
Color Register Set Cycle
Block Write Cycle
Block Write Cycle
RAS
CAS
Address
Row
Row
*1
WE
DSF
I/O
LP
DT/OE
Column A2–A8
Color Data
*1
Row
Column A2–A8
*1
Address Mask
*1
Address Mask
Note: 1.
WE
Low
High
I/O
I/O Mask Data
Don't care
I/O0
I/O1
I/O2
I/O3
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I/O Mask Data
Low: Mask
High: Non Mask
Address Mask Data
Mode
Mask
Non mask
Column0 (A0 = 0, A1 = 0) Mask Data
Column1 (A0 = 1, A1 = 0) Mask Data
Column2 (A0 = 0, A1 = 1) Mask Data
Column3 (A0 = 1, A1 = 1) Mask Data
Low: Mask
High: Non Mask
Figure 2 Use of Block Write
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Transfer Operation
The HM534253B provides the read transfer cycle, split read transfer cycle,pseudo transfer cycle, write
transfer cycle, and split write transfer cycle as data transfer cycles. These transfer cycles are set by driving
CAS high and DT/OE low at the falling edge of RAS. They have following functions:
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(1) Transfer data between row address and SAM data register (except for pseudo transfer cycle)
 Read transfer cycle and split read transfer cycle: RAM to SAM
 Write transfer cycle and split write transfer cycle: SAM to RAM
(2) Determine SI/O state (except for split read transfer cycle and split write transfer cycle)
 Read transfer cycle: SI/O output
 Pseudo transfer cycle and write transfer cycle: SI/O input
(3) Determine first SAM address to access after transferring at column address (SAM start address).
Data Sheet E0165H10
10
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HM534253B Series
SAM start address must be determined by read transfer cycle or pseudo transfer cycle (split transfer cycle
isn’t available) before SAM access, after power on, and determined for each transfer cycle.
Read Transfer Cycle (CAS high, DT/OE low, WE high and DSF low at the falling edge of RAS)
This cycle becomes read transfer cycle by driving DT/OE low, WE high and DSF low at the falling edge of
RAS. The row address data (512 × 4 bits) determined by this cycle is transferred to SAM data register
synchronously at the rising edge of DT/OE. After the rising edge of DT/OE, the new address data outputs
from SAM start address determined by column address. In read transfer cycle, DT/OE must be risen to
transfer data from RAM to SAM.
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This cycle can access SAM even during transfer (real time read transfer). In this case, the timing tSDD (min)
specified between the last SAM access before transfer and DT/OE rising edge and t SDH (min) specified
between the first SAM access and DT/OE rising edge must be satisfied. (See figure 3.)
When read transfer cycle is executed, SI/O becomes output state by first SAM access. Input must be set high
impedance before t SZS (min) of the first SAM access to avoid data contention.
RAS
CAS
DT/OE
DSF
Xi
L
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Address
Yj
t SDD
SI/O
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SC
t SDH
SAM Data before Transfer
Yj
Yj + 1
SAM Data after Transfer
Figure 3 Real Time Read Transfer
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Pseudo Transfer Cycle (CAS high, DT/OE low, WE low, SE high and DSF low at the falling edge of RAS)
Pseudo transfer cycle switches SI/O to input state and set SAM start address without data transfer to RAM.
This cycle starts when CAS is high, DT/OE low, WE low, SE high and DSF low at the falling edge of RAS.
Data should be input to SI/O later than t SID (min) after RAS becomes low to avoid data contention. SAM
access becomes enabled after t SRD (min) after RAS becomes high. In this cycle, SAM access is inhibited
during RAS low, therefore, SC must not be risen.
Write Transfer Cycle (CAS high, DT/OE low, WE low, SE low, and DSF low at the falling edge of RAS)
Data Sheet E0165H10
11
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HM534253B Series
Write transfer cycle can transfer a row of data input by serial write cycle to RAM. The row address of data
transferred into RAM is determined by the address at the falling edge of RAS. The column address is
specified as the first address for serial write after terminating this cycle. Also in this cycle, SAM access
becomes enabled after t SRD (min) after RAS becomes high. SAM access is inhibited during RAS low. In this
period, SC must not be risen. Data transferred to SAM by read transfer cycle or split read transfer cycle can
be written to other addresses of RAM by write transfer cycle. However, the address to write data must be the
same MSB of row address (AX8) as that of the read transfer cycle. Figure 4 shows the example of row bit
data transfer. In case AX8 is 0, data cannot be transferred RAM address within the range of 100000000 to
111111111. Same as the case of AX8 = 1.
LP
(Row address)
A8 ........ A0
000000000
SAM
........
SAM
(Row address)
A8 ........A0
000000000
Possible
RAM
011111111
100000000
RAM
011111111
100000000
Impossible
RAM
111111111
RAM
111111111
SAM
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(Read transfer cycle)
SAM
(Write transfer cycle)
Figure 4 Example of Row Bit Data Transfer
Split Read Transfer Cycle (CAS high, DT/OE low, WE high and DSF high at the falling edge of RAS)
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To execute a continuous serial read by real time read transfer, the HM534253B must satisfy SC and DT/OE
timings and requires an external circuit to detect SAM last address. Split read transfer cycle makes it possible
to execute a continuous serial read without the above timing limitation. Figure 5 shows the block diagram for
a split transfer. SAMdata register (DR) consists of 2 split buffers, whose organizations are 256-word × 4-bit
each. Let us suppose that data is read from upper data register DR1 (The row address AX8 is 0 and SAM
address A8 is 1.). When split read transfer is executed setting row address AX8 0 and SAM start addresses
A0 to A7, 256-word × 4-bit data are transferred from RAM to the lower data register DR0 (SAM address A8
is 0) automatically. After data are read from data register DR1, data start to be read from SAM start addresses
of data register DR0. If the next split read transfer isn’t executed while data are read from data register DR0,
data start to be read from SAM start address 0 of DR1 after data are read from data register DR0. If split read
transfer is executed setting row address AX8 1 and SAM start addresses A0 to A7 while data are read from
data register DR1, 256-word × 4-bit data are transferred to data register DR2. After data are read from data
register DR1, data start to be read from SAM start addresses of data register DR2. If the next split read
transfer isn’t executed while data is read from data register DR2, data start to be read from SAM start address
0 of data register DR3 after data are read from data register DR2. In this time, SAM data is the one
transferred to data register DR3 finally while row address AX8 is 1. In split read data transfer, the SAM start
address A8 is automatically set in the data register which isn’t used.
The data on SAM address A8, which will be accessed next, outputs to QSF. QSF is switched from low to
high by accessing SAM last address 255 and from high to low by accessing address 511.
Data Sheet E0165H10
12
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HM534253B Series
Split read transfer cycle is set when CAS is high, DT/OE is low, WE is high and DSF is high at the falling
edge of RAS. The cycle can be executed asyncronously with SC. However, tSTS (min) timing specified
between SC rising and RAS falling must be satisfied. SAM last address must be accessed, satisfying tRST
(min), tCST (min), and tAST (min) timings specified between RAS or CAS falling and column address. (See
figure 6.)
DR3
Memory
Array
AX8 = 1
DR2
SAM I/O Bus
SAM I/O Bus
DR0
AX8 = 0
DR1
LP
Memory
Array
SAM Column Decoder
In split read transfer, SI/O isn't switched to output state. Therefore, read transfer must be executed to switch
SI/O to output state when the previous transfer cycle is pseudo transfer or write transfer cycle.
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SAM I/O Buffer
SI/O
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Figure 5 Block Diagram for Split Transfer
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Data Sheet E0165H10
13
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HM534253B Series
RAS
tSTS (min)
tRST (min)
CAS
t CST (min)
Address
DSF
SC
Yj
t AST (min)
LP
DT/OE
Xi
511
(255)
255
(511)
n
(n + 255)
255 + Yj
(Yj)
Figure 6 Limitation in Split Transfer
Split Write Transfer Cycle (CAS high, DT/OE low, WE low and DSF high at the falling edge of RAS)
SAM Port Operation
Serial Read Cycle
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A continuous serial write cannot be executed because accessing SAM is inhibited during RAS low in write
transfer. Split write transfer cycle makes it possible. In this cycle, tSTS (min), tRST (min), tCST (min) and tAST
(min) timings must be satisfied like split read transfer cycle. And it is impossible to switch SI/O to input state
in this cycle. If SI/O is in output state, pseudo transfer cycle should be executed to switch SI/O into input
state. Data transferred to SAM by read transfer cycle or split read transfer cycle can be written to other
addresses of RAM by split write transfer cycle. However, pseudo transfer cycle must be executed before split
write transfer cycle. And the MSB of row address (AX8) to write data must be the same as that of the read
transfer cycle or the split read transfer cycle.
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SAM port is in read mode when the previous data transfer cycle is read transfer cycle. Access is
synchronized with SC rising, and SAM data is output from SI/O. When SE is set high, SI/O becomes high
impedance, and the internal pointer is incremented by the SC rising. After indicating the last address (address
511), the internal pointer indicates address 0 at the next access.
Data Sheet E0165H10
14
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HM534253B Series
Serial Write Cycle
If previous data transfer cycle is pseudo transfer cycle or write transfer cycle, SAM port goes into write mode.
In this cycle, SI/O data is fetched into data register at the SC rising edge like in the serial read cycle. If SE is
high, SI/O data isn’t fetched into data register. Internal pointer is incremented by the SC rising, so SE high
can be used as mask data for SAM. After indicating the last address (address 511), the internal pointer
indicates address 0 at the next access.
RAM Refresh
LP
Refresh
RAM, which is composed of dynamic circuits, requires refresh to retain data. Refresh is executed by
accessing all 512 row addresses within 8 ms. There are three refresh cycles: (1) RAS-only refresh cycle, (2)
CAS-before-RAS (CBR) refresh cycle, and (3) Hidden refresh cycle. Besides them, the cycles which activate
RAS such as read/write cycles or transfer cycles can refresh the row address. Therefore, no refresh cycle is
required when all row addresses are accessed within 8 ms.
SAM Refresh
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(1) RAS-Only Refresh Cycle: RAS-only refresh cycle is executed by activating only RAS cycle with CAS
fixed to high after inputting the row address (= refresh address) from external circuits. To distinguish this
cycle from data transfer cycle, DT/OE must be high at the falling edge of RAS.
(2) CBR Refresh Cycle: CBR refresh cycle is set by activating CAS before RAS. In this cycle, refresh
address need not to be input through external circuits because it is input through an internal refresh
counter. In this cycle, output is in high impedance and power dissipation is lowered because CAS circuits
don’t operate.
(3) Hidden Refresh Cycle: Hidden refresh cycle executes CBR refresh with the data output by reactivating
RAS when DT/OE and CAS keep low in normal RAM read cycles.
SAM parts (data register, shift resister and selector), organized as fully static circuitry, require no refresh.
Absolute Maximum Ratings
Symbol
Voltage on any pin relative to V SS
VT
Supply voltage relative to VSS
VCC
–0.5 to +7.0
Short circuit output current
Iout
50
Power dissipation
PT
1.0
Operating temperature
Topr
0 to +70
Storage temperature
Tstg
–55 to +125
Note:
1. Relative to VSS .
Value
Unit
Note
–1.0 to +7.0
V
1
ct
Parameter
V
1
mA
W
°C
°C
Data Sheet E0165H10
15
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HM534253B Series
Recommended DC Operating Conditions (Ta = 0 to +70°C)
Parameter
Symbol
Min
Typ
Max
Unit
Notes
Supply voltage
VCC
4.5
5.0
5.5
V
1
Input high voltage
VIH
2.4
—
6.5
V
1
—
0.8
V
1
Input low voltage
VIL
–0.5
*2
Notes: 1. All voltage referred to VSS
2 –3.0 V for pulse width ≤ 10 ns.
LP
DC Characteristics (Ta = 0 to +70°C, VCC = 5 V ± 10%, VSS = 0 V)
HM534253B
-6
-7
-8
-10
Parameter
Symbol Min Max Min Max Min Max Min Max Unit Test Conditions
Operating
current
I CC1
75
—
125 —
120 —
I CC2
—
7
—
7
I CC8
—
50
—
50
I CC3
—
75
—
70
I CC9
—
125 —
120 —
100 —
95
mA
I CC4
—
80
80
70
65
mA
I CC10
—
130 —
130 —
110 —
105 mA
—
50
—
45
—
40
—
35
mA
—
100 —
95
—
80
—
75
mA
I CC7
Standby
current
Page mode
current
I CC11
—
60
—
55
mA
100 —
95
mA
—
7
—
7
mA
—
40
—
40
mA
—
60
—
55
mA
—
Data Sheet E0165H10
16
RAS, CAS cycling SC = VIL,
t RC = min
SE = VIH
SE = VIL,
SC cycling
t SCC = min
RAS, CAS = VIH
—
SC = VIL,
SE = VIH
SE = VIL,
SC cycling
t SCC = min
RAS cycling
CAS = VIH
t RC = min
CAS cycling
RAS = VIL
t PC = min
SC = VIL,
SE = VIH
SE = VIL,
SC cycling
t SCC = min
SC = VIL,
SE = VIH
SE = VIL,
SC cycling
t SCC = min
ct
CAS-before- I CC5
RAS refresh
current
—
70
du
RAS-only
refresh
current
—
ro
—
RAS cycling
t RC = min
SC = VIL,
SE = VIH
SE = VIL,
SC cycling
t SCC = min
EO
HM534253B Series
DC Characteristics (Ta = 0 to +70°C, VCC = 5 V ± 10%, VSS = 0 V) (cont)
HM534253B
-6
-7
-8
-10
Parameter
Symbol Min Max Min Max Min Max Min Max Unit Test Conditions
Data
transfer
current
I CC6
—
80
I CC12
—
130 —
I LI
Output
leakage
current
I LO
Output high
voltage
VOH
Output low
voltage
VOL
75
—
125 —
LP
Input
leakage
current
—
65
—
105 —
60
mA
RAS, CAS cycling SC = VIL,
t RC = min
SE = VIH
SE = VIL,
SC cycling
t SCC = min
100 mA
–10 10
–10 10
–10 10
–10 10
µA
–10 10
–10 10
–10 10
–10 10
µA
2.4
—
2.4
—
2.4
—
2.4
—
V
I OH = –2 mA
—
0.4
—
0.4
—
0.4
—
0.4
V
I OL = 4.2 mA
ro
Notes: 1. I CC depends on output load condition when the device is selected. ICC max is specified at the output
open condition.
2. Address can be changed once while RAS is low and CAS is high.
Capacitance (Ta = 25°C, VCC = 5 V, f = 1 MHz, Bias: Clock, I/O = VCC, address =VSS)
Symbol
Typ
Input capacitance (Address)
CI1
—
Input capacitance (Clocks)
CI2
—
Output capacitance (I/O, SI/O, QSF)
CI/O
—
Note:
Max
Unit
Note
5
pF
1
5
pF
1
7
pF
1
du
Parameter
1. This parameter is sampled and not 100% tested.
AC Characteristics (Ta = 0 to +70°C, VCC = 5 V ± 10%, VSS = 0 V)*1, *16
•
•
•
•
•
Input rise and fall time: 5 ns
Input pulse levels: VSS to 3.0 V
Input timing reference levels: 0.8 V, 2.4 V
Output timing reference levels: 0.8 V, 2.0 V
Output load: See figures
ct
Test Conditions
Data Sheet E0165H10
17
EO
HM534253B Series
Test Conditions (cont)
I OH = – 2 mA
+5V
I OH = – 2 mA
I OL = 4.2 mA
I OL = 4.2 mA
I/O
+5V
SI / O
*1
100 pF
LP
Output Load (A)
*1
50 pF
Output Load (B)
Note: 1. Including scope & jig
Common Parameter
HM534253B
-8
-10
Symbol Min Max
Min Max
Min Max
Min Max
Unit Notes
Random read or write cycle
time
t RC
125 —
135 —
150 —
180 —
ns
RAS precharge time
t RP
55
—
55
—
60
—
70
ns
RAS pulse width
t RAS
60
10000
70
10000
80
10000
100 10000
ns
CAS pulse width
t CAS
20
—
20
—
20
—
25
—
ns
Row address setup time
t ASR
0
—
0
—
0
—
0
—
ns
Row address hold time
t RAH
10
—
10
—
10
—
10
—
ns
Column address setup time
t ASC
0
—
0
—
0
—
0
—
ns
Column address hold time
t CAH
15
—
15
—
15
—
15
—
ns
RAS to CAS delay time
t RCD
20
40
20
50
20
60
20
75
ns
RAS hold time referred to
CAS
t RSH
20
—
20
—
20
—
25
—
ns
CAS hold time referred to
RAS
t CSH
60
—
70
—
80
—
100 —
ns
CAS to RAS precharge time t CRP
10
—
10
—
10
—
10
ns
Transition time (rise to fall)
tT
3
50
3
50
3
50
Refresh period
t REF
—
8
—
8
—
8
DT to RAS setup time
t DTS
0
—
0
—
0
—
DT to RAS hold time
t DTH
10
—
10
—
10
—
DSF to RAS setup time
t FSR
0
—
0
—
0
—
DSF to RAS hold time
t RFH
10
—
10
—
10
—
Parameter
ro
-7
du
-6
—
ct
Data Sheet E0165H10
18
—
3
50
ns
—
8
ms
0
—
ns
10
—
ns
0
—
ns
10
—
ns
2
3
EO
HM534253B Series
Common Parameter (cont)
HM534253B
-6
-7
-8
-10
Symbol Min Max
Min Max
Min Max
Min Max
Unit Notes
DSF to CAS setup time
t FSC
0
—
0
—
0
—
0
—
ns
DSF to CAS hold time
t CFH
15
—
15
—
15
—
15
—
ns
Data-in to CAS delay time
t DZC
0
—
0
—
0
—
0
—
ns
4
Data-in to OE delay time
t DZO
0
—
0
—
0
—
0
—
ns
4
Output buffer turn-off delay
referred to CAS
t OFF1
—
20
—
20
—
20
—
20
ns
5
Output buffer turn-off delay
referred to OE
t OFF2
—
20
—
20
—
20
—
20
ns
5
LP
Parameter
Read Cycle (RAM), Page Mode Read Cycle
HM534253B
-6
-7
-8
-10
Symbol Min Max
Min Max
Min Max
Min Max
Unit Notes
Access time from RAS
t RAC
—
60
—
70
—
80
—
100
ns
6, 7
Access time from CAS
t CAC
—
20
—
20
—
20
—
25
ns
7, 8
Access time from OE
t OAC
—
20
—
20
—
20
—
25
ns
7
Address access time
t AA
—
35
—
35
—
40
—
45
ns
7, 9
Read command setup time
t RCS
0
—
0
—
0
—
0
—
ns
Read command hold time
t RCH
0
—
0
Read command hold time
referred to RAS
t RRH
10
—
10
RAS to column address
delay time
t RAD
15
25
15
Column address to RAS lead t RAL
time
35
—
35
Column address to CAS lead t CAL
time
35
—
35
du
ro
Parameter
Page mode cycle time
t PC
45
—
CAS precharge time
t CP
10
Access time from CAS
precharge
t ACP
0
—
0
—
ns
10
—
10
—
10
—
ns
10
35
15
40
15
55
ns
2
—
40
—
45
—
ns
—
40
—
45
—
ns
45
—
50
—
—
10
—
10
—
—
40
—
40
—
45
60
100000 70
100000 80
ct
Page mode RAS pulse width t RASP
—
55
—
ns
10
—
ns
—
50
ns
100000 100 100000 ns
Data Sheet E0165H10
19
EO
HM534253B Series
Write Cycle (RAM), Page Mode Write Cycle, Color Register Set Cycle
HM534253B
-6
-7
-8
-10
Symbol Min Max
Min Max
Min Max
Min Max
Unit Notes
Write command setup time
t WCS
0
—
0
—
0
—
0
—
ns
Write command hold time
t WCH
15
—
15
—
15
—
15
—
ns
Write command pulse width
t WP
15
—
15
—
15
—
15
—
ns
Write command to RAS lead t RWL
time
20
—
20
—
20
—
20
—
ns
Write command to CAS lead t CWL
time
20
—
20
—
20
—
20
—
ns
Data-in setup time
t DS
0
—
0
—
0
—
0
—
ns
12
t DH
15
—
15
—
15
—
15
—
ns
12
WE to RAS setup time
t WS
0
—
0
—
0
—
0
—
ns
WE to RAS hold time
t WH
10
—
10
—
10
—
10
—
ns
Mask data to RAS setup time t MS
0
—
0
—
0
—
0
—
ns
Mask data to RAS hold time t MH
10
—
10
—
10
—
10
—
ns
OE hold time referred to WE t OEH
20
—
20
—
20
—
20
—
ns
Page mode cycle time
t PC
45
—
45
—
50
—
55
—
ns
CAS precharge time
t CP
10
—
10
—
10
—
10
—
ns
CAS to data-in delay time
t CDD
20
—
20
—
20
—
20
—
ns
10000
100 100000 ns
Data-in hold time
Page mode RAS pulse width t RASP
60
ro
LP
Parameter
100000 70
100000 80
ct
du
Data Sheet E0165H10
20
11
13
EO
HM534253B Series
Read-Modify-Write Cycle
Parameter
HM534253B
-6
Symbol Min Max
-7
-8
-10
Min Max
Min Max
Min Max
Unit Notes
175 —
185 —
200 —
230 —
ns
RAS pulse width (readmodify-write cycle)
t RWS
110 10000
120 10000
130 10000
150 10000
ns
CAS to WE delay time
t CWD
45
—
45
—
45
—
50
—
ns
14
Column address to WE delay t AWD
time
60
—
60
—
65
—
70
—
ns
14
OE to data-in delay time
t ODD
20
—
20
—
20
—
20
—
ns
12
Access time from RAS
t RAC
—
60
—
70
—
80
—
100
ns
6, 7
Access time from CAS
t CAC
—
20
—
20
—
20
—
25
ns
7, 8
Access time from OE
t OAC
—
20
—
20
—
20
—
25
ns
7
Address access time
t AA
—
35
—
35
—
40
—
45
ns
7, 9
RAS to column address
delay time
t RAD
15
25
15
35
15
40
15
55
ns
Read command setup time
t RCS
0
—
0
—
0
—
0
—
ns
—
20
—
20
—
20
—
ns
—
20
—
20
—
20
—
ns
—
15
—
15
—
15
—
ns
—
0
—
0
—
0
—
ns
12
—
15
—
15
—
15
—
ns
12
—
20
—
20
—
20
—
ns
20
Write command to CAS lead t CWL
time
20
Write command pulse width
t WP
15
Data-in setup time
t DS
0
Data-in hold time
t DH
15
OE hold time referred to WE t OEH
20
Refresh Cycle
HM534253B
-6
-7
du
Write command to RAS lead t RWL
time
ro
LP
Read-modify-write cycle time t RWC
-8
-10
Symbol Min Max
Min Max
Min Max
Min Max
Unit Notes
CAS setup time (CASbefore-RAS refresh)
t CSR
10
—
10
—
10
—
10
—
ns
CAS hold time (CAS-before- t CHR
RAS refresh)
10
—
10
—
10
—
10
—
ns
RAS precharge to CAS hold t RPC
time
10
—
10
—
10
—
10
—
ns
ct
Parameter
Data Sheet E0165H10
21
EO
HM534253B Series
Flash Write Cycle, Block Write Cycle
HM534253B
-6
-7
-8
-10
Parameter
Symbol Min Max
Min Max
Min Max
Min Max
Unit Notes
CAS to data-in delay time
t CDD
20
—
20
—
20
—
20
—
ns
13
OE to data-in delay time
t ODD
20
—
20
—
20
—
20
—
ns
13
LP
Read Transfer Cycle
HM534253B
-6
Parameter
Symbol Min Max
-7
-8
-10
Min Max
Min Max
Min Max
Unit Notes
50
10000
60
10000
65
10000
80
10000
ns
DT hold time referred to CAS t CDH
20
—
20
—
20
—
25
—
ns
DT hold time referred to
column address
t ADH
25
—
25
—
30
—
30
—
ns
DT precharge time
t DTP
20
—
20
—
20
—
30
—
ns
DT to RAS delay time
t DRD
65
SC to RAS setup time
t SRS
25
1st SC to RAS hold time
t SRH
60
1st SC to CAS hold time
t SCH
25
1st SC to column address
hold time
t SAH
40
Last SC to DT delay time
t SDD
Last SC to DT delay time
—
65
—
70
—
80
—
ns
—
25
—
30
—
30
—
ns
—
70
—
80
—
100 —
ns
—
25
—
25
—
25
—
ns
—
40
—
45
—
50
—
ns
5
—
5
t SDD2
25
—
25
1st SC to DT hold time
t SDH
10
—
10
RAS to QSF delay time
t RQD
—
65
—
CAS to QSF delay time
t CQD
—
35
—
DT to QSF delay time
t DQD
—
35
—
QSF hold time referred to
RAS
t RQH
20
—
20
du
ro
DT hold time referred to RAS t RDH
QSF hold time referred to
CAS
t CQH
5
—
QSF hold time referred to DT t DQH
5
Serial data-in to 1st SC delay t SZS
time
Serial clock cycle time
5
—
5
—
ns
—
25
—
25
—
ns
—
15
—
15
—
ns
70
—
75
—
85
ns
15
35
—
40
—
40
ns
15
35
—
35
—
35
ns
15
—
20
—
25
—
ns
5
—
5
—
—
5
—
5
—
0
—
0
—
0
—
25
—
25
—
30
—
Data Sheet E0165H10
22
ct
t SCC
—
5
—
ns
5
—
ns
0
—
ns
30
—
ns
19
EO
HM534253B Series
Read Transfer Cycle (cont)
HM534253B
-6
-7
-8
-10
Symbol Min Max
Min Max
Min Max
Min Max
Unit Notes
SC pulse width
t SC
5
—
5
—
10
—
10
—
ns
SC precharge time
t SCP
10
—
10
—
10
—
10
—
ns
SC access time
t SCA
—
20
—
22
—
25
—
25
ns
Serial data-out hold time
t SOH
5
—
5
—
5
—
5
—
ns
Serial data-in setup time
t SIS
0
—
0
—
0
—
0
—
ns
Serial data-in hold time
t SIH
15
—
15
—
15
—
15
—
ns
RAS to column address
delay time
t RAD
15
25
15
35
15
40
15
55
ns
Column address to RAS lead t RAL
time
35
—
35
—
40
—
45
—
ns
RAS precharge to DT high
hold time
10
—
10
—
10
—
10
—
ns
t DTHH
15
18
ct
du
ro
LP
Parameter
Data Sheet E0165H10
23
EO
HM534253B Series
Pseudo Transfer Cycle, Write Transfer Cycle
HM534253B
-6
-7
-8
-10
Parameter
Symbol Min Max
Min Max
Min Max
Min Max
Unit Notes
SE setup time referred to
RAS
t ES
—
0
—
0
—
0
—
ns
SE hold time referred to RAS t EH
10
—
10
—
10
—
10
—
ns
SC setup time referred to
RAS
t SRS
25
—
25
—
30
—
30
—
ns
RAS to SC delay time
t SRD
20
—
20
—
25
—
25
—
ns
Serial output buffer turn-off
time referred to RAS
t SRZ
10
40
10
40
10
45
10
50
ns
RAS to serial data-in delay
time
t SID
40
—
40
—
45
—
50
—
ns
RAS to QSF delay time
t RQD
—
65
—
70
—
75
—
85
ns
15
CAS to QSF delay time
t CQD
—
35
—
35
—
40
—
40
ns
15
QSF hold time referred to
RAS
t RQH
20
—
20
—
20
—
25
—
ns
QSF hold time referred to
CAS
t CQH
5
—
5
—
5
—
5
—
ns
Serial clock cycle time
t SCC
25
—
25
—
30
—
30
—
ns
SC pulse width
t SC
5
—
5
—
10
—
10
—
ns
SC precharge time
t SCP
10
—
10
—
10
—
10
—
ns
SC access time
t SCA
—
20
—
22
—
25
—
25
ns
15
SE access time
t SEA
—
20
—
22
—
25
—
25
ns
15
Serial data-out hold time
t SOH
5
—
5
—
5
—
5
—
ns
Serial write enable setup
time
t SWS
5
—
5
—
5
—
5
—
ns
Serial data-in setup time
t SIS
0
—
0
—
0
—
0
—
ns
Serial data-in hold time
t SIH
15
—
15
—
15
—
15
—
ns
ct
du
ro
LP
0
Data Sheet E0165H10
24
EO
HM534253B Series
Split Read Transfer Cycle, Split Write Transfer Cycle
HM534253B
-6
-7
-8
-10
Symbol Min Max
Min Max
Min Max
Min Max
Unit Notes
Split transfer setup time
t STS
20
—
20
—
20
—
25
—
ns
Split transfer hold time
referred to RAS
t RST
60
—
70
—
80
—
100 —
ns
Split transfer hold time
referred to CAS
t CST
20
—
20
—
20
—
25
—
ns
Split transfer hold time
referred to column address
t AST
35
—
35
—
40
—
45
—
ns
SC to QSF delay time
t SQD
—
30
—
30
—
30
—
30
ns
QSF hold time referred to SC t SQH
5
—
5
—
5
—
5
—
ns
Serial clock cycle time
t SCC
25
—
25
—
30
—
30
—
ns
SC pulse width
t SC
5
—
5
—
10
—
10
—
ns
t SCP
10
—
10
—
10
—
10
—
ns
t SCA
—
20
—
22
—
25
—
25
ns
Serial data-out hold time
t SOH
5
—
5
—
5
—
5
—
ns
Serial data-in setup time
t SIS
0
—
0
—
0
—
0
—
ns
Serial data-in hold time
t SIH
15
—
15
—
15
—
15
—
ns
RAS to column address
delay time
t RAD
15
25
15
35
15
40
15
55
ns
Column address to RAS lead t RAL
time
35
—
35
—
40
—
45
—
ns
SC precharge time
SC access time
15
15
ct
du
ro
LP
Parameter
Data Sheet E0165H10
25
EO
HM534253B Series
Serial Read Cycle, Serial Write Cycle
HM534253B
-6
-7
-8
-10
Symbol Min Max
Min Max
Min Max
Min Max
Unit Notes
Serial clock cycle time
t SCC
25
—
25
—
30
—
30
—
ns
SC pulse width
t SC
5
—
5
—
10
—
10
—
ns
SC precharge width
t SCP
10
—
10
—
10
—
10
—
ns
Access time from SC
t SCA
—
20
—
22
—
25
—
25
ns
15
Access time from SE
t SEA
—
20
—
22
—
25
—
25
ns
15
Serial data-out hold time
t SOH
5
—
5
—
5
—
5
—
ns
Serial output buffer turn-off
time referred to SE
t SEZ
—
20
—
20
—
20
—
20
ns
Serial data-in setup time
t SIS
0
—
0
—
0
—
0
—
ns
Serial data-in hold time
t SIH
15
—
15
—
15
—
15
—
ns
Serial write enable setup
time
t SWS
5
—
5
—
5
—
5
—
ns
Serial write enable hold time t SWH
15
—
15
—
15
—
15
—
ns
Serial write disable setup
time
5
—
5
—
5
—
5
—
ns
—
15
—
15
—
15
—
ns
t SWIS
Serial write disable hold time t SWIH
15
ro
LP
Parameter
5
ct
du
Notes: 1. AC measurements assume t T = 5 ns.
2. When t RCD > tRCD (max) and tRAD > tRAD (max), access time is specified by tCAC or tAA.
3. VIH (min) and VIL (max) are reference levels for measuring timing of input signals. Transition time tT
is measured between VIH and VIL.
4. Data input must be floating before output buffer is turned on. In read cycle, read-modify-write cycle
and delayed write cycle, either tDZC (min) or tDZO (min) must be satisfied.
5. t OFF1 (max), tOFF2 (max), and tSEZ (max) are defined as the time at which the output achieves the open
circuit condition (V OH – 100 mV, VOL + 100 mV).
6. Assume that tRCD ≤ tRCD (max) and tRAD ≤ tRAD (max). If tRCD or tRAD is greater than the maximum
recommended value shown in this table, t RAC exceeds the value shown.
7. Measured with a load circuit equivalent to 2 TTL loads and 100 pF.
8. When t RCD ≥ tRCD (max) and tRAD ≤ tRAD (max), access time is specified by tCAC .
9. When t RCD ≤ tRCD (max) and tRAD ≥ tRAD (max), access time is specified by tAA .
10. If either tRCH or tRRH is satisfied, operation is guaranteed.
11. When t WCS ≥ tWCS (min), the cycle is an early write cycle, and I/O pins remain in an open circuit (high
impedance) condition.
12. These parameters are specified by the later falling edge of CAS or WE.
13. Either t CDD (min) or tODD (min) must be satisfied because output buffer must be turned off by CAS or
OE prior to applying data to the device when output buffer is on.
14. When t AWD ≥ tAWD (min) and tCWD ≥ tCWD (min) in read-modify-write cycle, the data of the selected
address outputs to an I/O pin and input data is written into the selected address. t ODD (min) must be
satisfied because output buffer must be turned off by OE prior to applying data to the device.
15. Measured with a load circuit equivalent to 2 TTL loads and 50 pF.
Data Sheet E0165H10
26
EO
HM534253B Series
16. After power-up, pause for 100 µs or more and execute at least 8 initialization cycle (normal memory
cycle or refresh cycle), then start operation.
17. When the serial write cycle is used, at least one SC pulse is required before proper SAM operation
after V CC stabilized.
18. t DTHH (min) must be satisfied only if DT/OE rises up before RAS rises in a read transfer cycle.
19. After read transfer cycle, if split read transfer cycle is executed without SC access and SC address
is 254 or 510, t SDD2 (min) must be satisfied 25 ns. Except for those cases, tSDD (min) is effective and
satisfied 5 ns.
20. XXX: H or L (H: V IH (min) ≤ V IN ≤ V IH (max), L: VIL (min) ≤ V IN ≤ V IL (max))
///////: Invalid Dout
LP
Timing Waveforms*20
Read Cycle
RAS
t RC
t RAS
t CRP
t CSH
t RSH
t CAS
t RCD
t RAD
t ASR
Address
ro
CAS
t RAL
t RAH
t ASC
Row
t CAL
t CAH
Column
t RCS
WE
t RRH
t RCH
t CAC
t AA
t CDD
t OFF1
du
t RAC
I/O
(Output)
Valid Dout
t OAC
t DZC
I/O
(Input)
t DZO
t DTS
t DTH
t FSR
t RFH
DT/OE
DSF
t RP
t FSC
t CFH
t OFF2
ct
Data Sheet E0165H10
27
EO
HM534253B Series
Early Write Cycle
t RC
t RAS
t RP
RAS
CAS
WE
I/O
(Output)
I/O
(Input)
DT/OE
t ASR
t RAH
Row
t WS
t WH
Note:
t CAH
t ASC
Column
t WCS
t WCH
*1
t MH
t MS
t DS
Mask Data
t DTS
t DTH
t FSR
DSF
t RSH
t CAS
LP
Address
t CRP
t CSH
t RCD
t RFH
High-Z
t DH
Valid Din
t FSC
t CFH
1. This cycle becomes a normal mode write cycle when WE is high and a mask write cycle when WE
is low.
ro
Delayed Write Cycle
t RC
t RAS
RAS
CAS
t CAS
t ASR
Address
t RAH
Row
t WS
I/O
(Input)
t CAH
Columun
t RWL
t WH
t MS
t MH
t RFH
t DS
t DZC
Mask Data
t DTH
t DTS
t FSR
t OFF2
t ODD
t FSC
t CFH
1. This cycle becomes a normal mode write cycle when WE is high and a mask write cycle when WE
is low.
Data Sheet E0165H10
28
t DH
Valid Din
t OEH
DSF
Note:
t CWL
t WP
ct
DT/OE
t ASC
*1
WE
I/O
(Output)
t CRP
du
t CSH
t RSH
t RCD
t RP
EO
HM534253B Series
Read-Modify-Write Cycle
t RWC
t RP
t RWS
RAS
t CRP
t RCD
CAS
t RAH
t WS
WE
I/O
(Output)
I/O
(Input)
DT/OE
Note:
Column
t WH
t AWD
t CWD
t RCS
t RWL
t CWL
t WP
t CAC
t AA
*1
t RAC
t MS
t MH
Valid Dout
t OAC
t DZC
Mask Data
t DZO
t DTS
t DTH
t RFH
t FSR
DSF
t CAH
t ASC
Row
LP
Address
t RAD
t ASR
t FSC
t DS
t DH
Valid Din
t OFF2
t ODD
t OEH
t CFH
Page Mode Read Cycle
ro
1. This cycle becomes a normal mode write cycle when WE is high and a mask write cycle when WE
is low.
t RC
t RASP
RAS
CAS
t RAD
t ASR
Address
t RAH t ASC
Row
t CAL
t CAH
Column
t RCS
WE
t PC
t CP
t ASC
t CAS
Column
t AA
t ACP
t CAC
t OFF1
I/O
(Input)
t DTS
t DZO
t DTH
t FSR
t RFH
t CDD
t OAC t OFF2
t AA
t ACP
t CAC
Valid
Dout
t DZC
t OAC
t CDD
t OFF2
t DZC
t OAC
DT/OE
DSF
t FSC
t CFH
t FSC
t CFH
t OFF1
Valid Dout
t FSC
t CFH
ct
t DZC
t RRH
t RCH
t RCS
t RCH
Valid
Dout
I/O
(Output)
t CAL
t CAH
t ASC
Column
t RAC t OFF1
t AA
t CAC
t CRP
t RAL
t CAL
t CAH
t RCS
t RCH
t RSH
t CAS
t CP
du
t CSH
t RCD
t CAS
t RP
t CDD
Data Sheet E0165H10
29
EO
HM534253B Series
Page Mode Write Cycle (Early Write)
t RC
t RP
t RASP
RAS
CAS
Address
t RAH t ASC
t MS
Mask
Data
Note:
t CAH t ASC
t CRP
t CAH
Column
Column
t WCS t WCH
t WCS t WCH
t DH
High-Z
t DS
Valid Din
t DH
t DH
t DS
Valid Din
Valid Din
t DTH
t FSR
DSF
t DS
t MH
t DTS
DT/OE
t CAH t ASC
Row
Column
t WS t WH t WCS t WCH
t RSH
t CAS
t CP
t CAS
*1
I/O
(Output)
I/O
(Input)
t ASR
t CP
t CAS
LP
WE
t PC
t CSH
t RCD
t RFH
t CFH
t FSC
t FSC
t CFH
t FSC
t CFH
1. This cycle becomes a normal mode write cycle when WE is high and a mask write cycle when WE
is low.
ro
Page Mode Write Cycle (Delayed Write)
t RC
t RASP
RAS
t CSH
t PC
t RCD
t ASR t RAH t ASC
Address
Row
t WS
Column
t ASC
t CAH
Column
t MH
t MS
I/O
(Input)
Mask
Data
t WP
t DS
t DH
Valid
Din
t DS
Valid
Din
t DS
t DH
Valid
Din
t OEH
t RFH t FSC
t CFH
t FSC t CFH
t FSC
t CFH
1. This cycle becomes a normal mode write cycle when WE is high and a mask write cycle when WE
is low.
Data Sheet E0165H10
30
t CWL
t WP
t DH
DSF
Note:
t RWL
ct
t FSR
t CRP
t CAH
t WP
t DTS
DT/OE
t ASC
t CWL
t CWL
t WH
t RSH
t CAS
t CP
Column
*1
WE
I/O
(Output)
t CAH
t CAS
du
CAS
t CP
t CAS
t RP
EO
HM534253B Series
RAS-Only Refresh Cycle
t RC
t RP
t RAS
RAS
t RPC
t CRP
CAS
t ASR
t RAH
Row
Address
I/O
(Output)
LP
t OFF1
t CDD
I/O
(Input)
DT/OE
DSF
t OFF2
t ODD
t DTS
t DTH
t FSR
t RFH
CAS-Before-RAS Refresh Cycle
RAS
t RPC
t CP
t CSR
CAS
Address
ro
t RP
DSF
t RPC
High-Z
t CSR
Inhibit Falling Transition
ct
du
DT/OE
t OFF1
t RP
t CHR
WE
I/O
(Output)
t RC
t RAS
Data Sheet E0165H10
31
EO
HM534253B Series
Hidden Refresh Cycle
t RC
t RAS
t RC
t RAS
t RP
t RP
RAS
t RCD
CAS
Row
Column
t RCS
WE
t CRP
t CHR
t RAD t RAL
t RAH t
ASC t CAH
t ASR
LP
Address
t RSH
t RRH
t CAC
t AA
t RAC
I/O
(Output)
I/O
(Input)
t DZC
DSF
t OAC
t OFF2
t DZO
t DTH
t DTS
DT/OE
t OFF1
Valid Dout
t RFH
t FSR
t FSC
ro
Color Register Set Cycle (Early Write)
t CFH
t RC
t RP
t RAS
RAS
t CSH
CAS
t ASR
Address
t RSH
t CAS
t RAH
Row
t WS
t WH
t WCS
t WCH
t DS
t DH
WE
High-Z
I/O
(Output)
I/O
(Input)
Color Data
t DTH
t FSR
t RFH
ct
t DTS
DT/OE
DSF
Data Sheet E0165H10
32
t CRP
du
t RCD
EO
HM534253B Series
Color Register Set Cycle (Delayed Write)
t RC
t RP
t RAS
RAS
t CSH
t CRP
t RSH
t RCD
t CAS
CAS
t RAH
LP
Address
t ASR
Row
t RWL
t CWL
t WS
WE
I/O
(Output)
I/O
(Input)
t WP
High-Z
t DS
t DH
Color Data
t DTS
DT/OE
DSF
t FSR
t OEH
t RFH
ro
Color Register Read Cycle
t RC
t RP
t RAS
RAS
t CSH
t ASR
Address
t RAH
Row
t WS
t RCS
t WH
WE
t RRH
t CAC
t RAC
I/O
(Output)
t RCH
t CDD
t OFF1
Valid Out
t DZC
t OAC
t DZO
t DTS
t FSR
t DTH
t RFH
DSF
t OFF2
t ODD
ct
I/O
(Input)
DT/OE
du
CAS
t CRP
t RSH
t CAS
t RCD
Data Sheet E0165H10
33
EO
HM534253B Series
Flash Write Cycle
t RC
t RAS
t RP
RAS
t CRP
t RCD
CAS
t ASR
t RAH
Row
Address
LP
t WS
WE
t CDD
t OFF1
I/O
(Output)
t OFF2
I/O
(Input)
t MS
t ODD
t FSR
DSF
t MH
t RFH
ro
Block Write Cycle
High-Z
Mask Data
t DTH
t DTS
DT/OE
t WH
t RC
t RP
t RASP
RAS
t CSH
t PC
t RCD
t CAS
t ASR t RAH
t WS
t ASC
t CAH
Column
A2-A8
t WH
*1
WE
I/O
(Output)
Column
A2-A8
Row
Address
t CAH
t ASC
t CAS
t RSH
t CAS
t CP
t ASC
t MS
t MH
t DS
t DH
Address
Mask
I/O
Mask
Column
A2-A8
t DS
Address
Mask
t DH
t DS
t DTH
DT/OE
t FSR
t RFH
t FSC
t CFH
t FSC
t DH
Address
Mask
t CFH
DSF
t FSC
ct
t DTS
t CFH
1. This cycle becomes a normal block write cycle when WE is high and a mask block write cycle
when WE is low.
Data Sheet E0165H10
34
t CAH
High-Z
I/O
(Input)
Note:
t CRP
du
CAS
t CP
EO
HM534253B Series
Page Mode Block Write Cycle
t RC
t RP
t RASP
RAS
t CSH
t PC
t RCD
t CP
t CAS
t RSH
t CAS
t CP
t CAS
t CRP
CAS
t ASR t RAH
t MS
t MH
Column
A2-A8
t CAH
Column
A2-A8
t DH
High-Z
t DS
t DH
Address
Mask
t DS
t DH
Address
Mask
t DTH
t RFH
t FSC
t CFH
t FSC
t CFH
t FSC
t CFH
ro
Note:
t DS
Address
Mask
I/O
Mask
t FSR
DSF
t ASC
t WH
t DTS
DT/OE
t CAH
*1
WE
I/O
(Input)
LP
t WS
I/O
(Output)
Column
A2-A8
Row
Address
t ASC
t CAH
t ASC
1. This cycle becomes a normal block write cycle when WE is high and a mask block write cycle
when WE is low.
ct
du
Data Sheet E0165H10
35
EO
HM534253B Series
Read Transfer Cycle (1)
t RC
t RP
t RAS
RAS
t CRP
t CSH
t RCD
t RSH
t CAS
CAS
I/O
(Output)
SAM Start
Address
Row
t WS
WE
t RAL
t ASC t CAH
LP
Address
t RAD
t RAH
t ASR
t WH
t DTS
DT/OE
t FSR
DSF
t DTP
t SCA
t SOH
Valid Sout
t SCC
t SCC
t SDD
t SDD2* 3
ro
Valid Sout
t ADH
t RDH
t SCC
t SCA
t SOH
SI/O
(Output)
t DRD
t RFH
t SCC
SC
t DTHH
High-Z
t CDH
t SCP
t SCA
t SOH
t SCA
t SOH
Valid Sout
t SC
t SDH
t SOH
Valid Sout
Valid Sout
Previous Row
SI/O
(Input)
New Row
t DQD
t DQH
*1
SAM Address MSB
t RQD
t RQH
QSF
*2
SAM Address MSB
du
QSF
t CQD
t CQH
ct
Notes: 1. This QSF timing is referred when SC is risen once or more between the previous transfer cycle and
CAS falling edge of this cycle (QSF is switched by DT rising).
2. This QSF timing is referred when SC isn't risen between the previous transfer cycle and CAS falling
edge of this cycle (QSF is switched by RAS or CAS falling).
3. After read transfer cycle, if split read transfer cycle is executed without SC access and SC address
is 254 or 510, t SDD2 (min) must be satisfied 25 ns. Except for those cases, tSDD (min) is effective and
satisfied 5 ns.
Data Sheet E0165H10
36
EO
HM534253B Series
Read Transfer Cycle (2)
t RC
t RAS
t RP
RAS
t CSH
t CRP
t RCD
t RSH
t CAS
CAS
t RAD
t RAH
LP
t ASR
Address
Row
t WS
WE
I/O
(Output)
DT/OE
DSF
t ASC
t RAL
t CAH
Sam Start
Address
t WH
t DTS
t DTH
t FSR
t RFH
t DRD
t DTP
t SDH
ro
t SRS
t SC
t DTHH
High-Z
t SCP
t SCC
t SC
t SRH
t SIS
t SIH
Valid
Sin
t SCA
t SCA
t SCH
t SAH
SI/O
(Output)
SI/O
(Input)
t SCP
Inhibit Rising Transition
SC
t SOH
Valid Sout
t SZS
du
t DQD
t DQH
QSF
SAM Address MSB
t CQD
t CQH
t RQD
t RQH
ct
Data Sheet E0165H10
37
EO
HM534253B Series
Pseudo Transfer Cycle
t RC
t RAS
t RP
RAS
t CSH
t CAS
CAS
t ASC
t RAH
SAM Start
Address
Row
t WS
WE
I/O
(Output)
t DTS
DT/OE
DSF
t WH
t RFH
t ES
t SEZ
t EH
ro
t FSR
t SRS
t SC
t SWS
t SRD
t SCP
t SCC
t SC
t SCP
Inhibit Rising Transition
SC
t SCA
t SOH
Valid
Sout
t SRZ
Valid Sout
SI/O
(Input)
t CQD
t RQD
t RQH
SAM Address MSB
t CQH
du
t SIS
t SID
QSF
High - Z
t DTH
SE
SI/O
(Output)
t CAH
LP
t ASR
Address
t CRP
t RSH
t RCD
t SIH
Valid Sin
t SIS
t SIH
Valid Sin
ct
Data Sheet E0165H10
38
EO
HM534253B Series
Write Transfer Cycle
t RC
t RAS
t RP
RAS
t CRP
t CSH
t RSH
t RCD
t CAS
CAS
t RAH
t ASC
Row
Address
t WS
WE
I/O
(Output)
t DTS
DT/OE
t FSR
DSF
t ES
SAM Start
Address
t WH
t RFH
ro
t EH
t SRS
t SWS t SC
SC
t SRD
t SCP
t SCC
t SC
t SCP
Inhibit Rising Transition
t SIS
t SIH
Valid Sin
t RQD
t RQH
SAM Address MSB
t SIS
t SIH
Valid Sin
t CQD
QSF
t SWS
du
SI/O
(Input)
High-Z
t DTH
SE
SI/O
(Output)
t CAH
LP
t ASR
t CQH
t SIS
t SIH
Valid Sin
ct
Data Sheet E0165H10
39
EO
HM534253B Series
Split Read Transfer Cycle
t RC
t RP
t RAS
RAS
t CSH
t RAD
t ASR
LP
t RAH
t RAL
t ASC
t WS
t CAH
SAM Start
Address Yi
Row
WE
t CRP
t CAS
CAS
Address
t RSH
t RCD
t CRP
t WH
t OFF1
I/O
(Output)
DT/OE
t DTH
t FSR
t RFH
ro
DSF
t DTS
High-Z
t CST
t AST
t RST
Low
SE
t SCC
t SC
t STS
SC
Valid Sout
SI/O
(Input)
t SQD
t SQH
QSF
n+1
(n+256)
t SCA
Valid
Sout
Valid
Sout
n+2
(n+257)
t SOH
Valid
Sout
253
(509)
254
(510)
du
SI/O
(Output)
511
(255)
t SCA
t SOH
t SCP
n
(n+255)
Valid
Sout
255
(511)
Yi+255
(Yi)
Valid
Sout
t SQD
t SQH
SAM Address MSB
ct
Data Sheet E0165H10
40
EO
HM534253B Series
Split Write Transfer Cycle
t RC
t RP
t RAS
RAS
t CSH
t RSH
t RCD
t CAS
CAS
t ASR
LP
t RAH
Address
t RAL
SAM Start
Address Yi
Row
t WS
WE
t CAH
t ASC
t WH
t OFF1
I/O
(Output)
DT/OE
t DTH
t FSR
t RFH
ro
DSF
t DTS
High-Z
t CST
t AST
t RST
Low
SE
t SCC
t SC
t STS
SC
511
(255)
t SIS
t SQD
t SQH
QSF
n+1
(n+256)
t SIH
Valid
Sin
Valid Sin
t SCP
n+2
(n+257)
t SIS
Valid
Sin
t SIH
Valid
Sin
n+3
(n+258)
254
(510)
du
SI/O
(Output)
SI/O
(Input)
n
(n+255)
Valid
Sin
255
(511)
t SIS
Yi+255
(Yi)
t SIH
Valid
Sin
Valid Sin
t SQD
t SQH
SAM Address MSB
ct
Data Sheet E0165H10
41
EO
HM534253B Series
Serial Read Cycle
SE
tSCC
SC
SI/O
(Output)
tSCC
tSC
tSCP
tSCA
tSOH
SC
tSIS
SI/O
(Input)
tSCP
tSIH
Valid Sin
tSCC
tSCP
tSC
tSCA
tSOH
tSEA
tSCA
Valid Sout
LP
tSWIS
tSCC
tSC
tSC
Valid Sout
tSWH
SE
tSCP
tSEZ
Valid Sout
Serial Write Cycle
tSC
tSWIH
Valid
Sout
tSWS
tSCC
tSC
tSCC
tSC
tSC
tSCP
tSCP
tSIS
tSIH
Valid Sin
tSIS
tSIH
Valid Sin
ct
du
ro
Data Sheet E0165H10
42
EO
HM534253B Series
Package Dimensions
HM534253BJ Series (CP-28D)
Unit: mm
18.17
18.54 Max
1.30 Max
11.18 ± 0.13
10.16 ± 0.13
ro
0.43 ± 0.10
0.41 ± 0.08
14
1.27
0.10
Dimension including the plating thickness
Base material dimension
0.21
2.40 +– 0.24
0.74
0.25
0.80 +– 0.17
1
15
3.50 ± 0.26
LP
28
9.40 ± 0.25
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
CP-28D
Conforms
Conforms
1.16 g
ct
du
Data Sheet E0165H10
43
EO
HM534253B Series
HM534253BZ Series (ZP-28)
8.71
1.27
1.045 Max
2.80 Min
0.50 – 0.12
0.10
0.25 +– 0.05
2.54
2.85
+ 0.08
0.25 M
28
10.16 Max
35.58
36.57 Max
LP
1
Unit: mm
ZP-28
—
Conforms
1.95 g
ct
du
ro
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
Data Sheet E0165H10
44
EO
HM534253B Series
Cautions
ct
du
ro
LP
1. Elpida Memory, Inc. neither warrants nor grants licenses of any rights of Elpida Memory, Inc.’s or any
third party’s patent, copyright, trademark, or other intellectual property rights for information contained in
this document. Elpida Memory, Inc. bears no responsibility for problems that may arise with third party’s
rights, including intellectual property rights, in connection with use of the information contained in this
document.
2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.
3. Elpida Memory, Inc. makes every attempt to ensure that its products are of high quality and reliability.
However, contact Elpida Memory, Inc. before using the product in an application that demands especially
high quality and reliability or where its failure or malfunction may directly threaten human life or cause
risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.
4. Design your application so that the product is used within the ranges guaranteed by Elpida Memory, Inc.
particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Elpida Memory, Inc. bears no responsibility for failure or damage
when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally
foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as
fail-safes, so that the equipment incorporating Elpida Memory, Inc. product does not cause bodily injury,
fire or other consequential damage due to operation of the Elpida Memory, Inc. product.
5. This product is not designed to be radiation resistant.
6. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without
written approval from Elpida Memory, Inc..
7. Contact Elpida Memory, Inc. for any questions regarding this document or Elpida Memory, Inc.
semiconductor products.
Data Sheet E0165H10
45