INFINEON HYB514800BJ-70

512kx8-Bit Dynamic RAM
HYB 514800BJ -60/-70/-80
Advanced Information
•
512 288 words by 8-bit organization
•
0 to 70 ˚C operating temperature
•
Fast access and cycle time
RAS access time:
60 ns (-60 version)
70 ns (-70 version)
80 ns (-80 version)
CAS access time:
20 ns
Cycle time:
110 ns (-60 version)
130 ns (-70 version)
150 ns (-80 version)
•
•
Fast page mode cycle time
45 ns (-60 version)
45 ns (-70 version)
50 ns (-80 version)
•
Low power dissipation
max. 605 mW active (-60 version)
max. 550 mW active (-70 version)
max. 468 mW active (-80 version)
•
Standby power dissipation:
11 mW standby standby (TTL)
5.5 mW max.standby (CMOS)
•
Output unlatched at cycle end allows twodimensional chip selection
•
Read, write, read-modify write, CAS-beforeRAS refresh, RAS-only refresh, hidden
refresh, fast page mode capability
•
All inputs and outputs TTL-compatible
•
1024 refresh cycles / 16 ms
•
Plastic Packages: P-SOJ-28-2 400 mil width
Single + 5 V (± 10 %) supply with a
built-in Vbb generator
Ordering Information
Type
Ordering Code
Package
Descriptions
HYB 514800BJ-60
Q67100-Q849
P-SOJ-28-2
DRAM
(access time 60 ns)
HYB 514800BJ-70
Q67100-Q850
P-SOJ-28-2
DRAM
(access time 70 ns)
HYB 514800BJ-80
Q67100-Q851
P-SOJ-28-2
DRAM
(access time 80 ns)
Semiconductor Group
125
01.95
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
The HYB 514800BJ is the new generation dynamic RAM organized as 512 288 words by 8-bit. The
HYB 514800BJ utilizes CMOS silicon gate process as well as advances circuit techniques to
provide wide operation margins, both internally and for the system user. Multiplexed address inputs
permit the HYB 514800BJ to be packed in a standard plastic 400mil wide P-SOPJ-28 package. This
package size provides high system bit densities and is compatible with commonly used automatic
testing and insertion equipment. System oriented feature include single + 5 V (± 10 %) power
supply, direct interfacing with high performance logic device families such as Schottky TTL.
Pin Definitions and Functions
A0-A8,A9R
Address Input
RAS
Row Address Strobe
CAS
Column Address Strobe
WRITE
Read/Write Input
OE
Output Enable
IO1 - IO8
Data Input/Output
N.C.
No Connection
VCC
Power Supply (+ 5 V)
VSS
Ground (0 V)
Pin Configuration
(top view)
P-SOJ-28-2 ( 400 mil width)
Semiconductor Group
126
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
Block Diagram
Semiconductor Group
127
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
Absolute Maximum Ratings
Operating temperature range ............................................................................................0 to 70 ˚C
Storage temperature range......................................................................................– 55 to + 150 ˚C
Soldering temperature ............................................................................................................260 ˚C
Soldering time .............................................................................................................................10 s
Input/output voltage ........................................................................................................ – 1 to + 7 V
Power Supply voltage ..................................................................................................... – 1 to + 7 V
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.
DC Characteristics
TA = 0 to 70 ˚C, VSS = 0 V, VCC = 5 V ± 10 %, tT = 5 ns
Parameter
Symbol
Limit Values
min.
max.
Unit Test
Condition
Input high voltage
Vih
2.4
6.5
V
1)
Input low voltage
Vil
– 1.0
0.8
V
1)
Output high voltage (IOUT = – 5 mA)
Voh
2.4
–
V
1)
Output low voltage (IOUT = 4.2 mA)
Vol
–
0.4
V
1)
Input leakage current, any input
(0 V < Vin < 7, all other input = 0 V)
II(L)
– 10
10
µA
1)
Output leakage current
(DO is disabled, 0 < VOUT < VCC)
Io(L)
– 10
10
µA
1)
Average VCC supply current
-60 version
-70 version
-80 version
ICC1
mA
2) 3)
Standby VCC supply current
(RAS = CAS = Vih)
ICC2
mA
–
Average VCC supply current during RAS-only
refresh cycles
-60 version
-70 version
-80 version
ICC3
mA
2)
Average VCC supply current during fast page
mode operation
-60 version
-70 version
-80 version
ICC4
mA
2) 3)
Semiconductor Group
–
–
–
110
100
90
–
2
–
–
–
–
–
–
128
110
100
90
70
60
50
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
DC Characteristics (cont’d)
TA = 0 to 70 ˚C, VSS = 0 V, VCC = 5 V ± 10 %, tT = 5 ns
Parameter
Symbol
Standby VCC supply current
(RAS = CAS = VCC – 0.2 V)
ICC5
Average VCC supply current during
CAS before RAS refresh mode
-60 version
-70 version
-80 version
ICC6
Semiconductor Group
Limit Values
min.
max.
Unit Test
Condition
–
1
mA
1)
mA
2)
–
–
–
129
110
100
90
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
AC Characteristics 4)
TA = 0 to 70 ˚C; VCC = 5 V ± 10 %; tT = 5 ns
Parameter
Symbol
Limit Values
-60
Unit
-70
-80
min.
max.
min.
max.
min.
max.
Random read or write tRC
time
110
–
130
–
150
–
ns
Read-write cycle time tRWC
165
–
185
–
205
–
ns
Fast page mode
cycle time
tPC
45
–
45
–
50
–
ns
Fast page mode
read/write cycle time
tPRWC
100
–
100
–
105
–
ns
Access time from
RAS 6) 11)
tRAC
–
60
–
70
–
80
ns
Access time from
CAS 6) 11)
tCAC
–
20
–
20
–
20
ns
–
30
–
35
–
40
ns
tAA
Access time from
6) 12)
column address
Access time from
CAS precharge 6)
tCPA
–
40
–
40
–
45
ns
CAS to output in
low-Z 6)
tCLZ
0
–
0
–
0
–
ns
Output buffer turn-off
delay from CAS 7)
tOFF
0
20
0
20
0
20
ns
Transition time
(rise and fall) 5)
tT
3
50
3
50
3
50
ns
RAS precharge time
tRP
40
–
50
–
60
–
ns
RAS pulse width
tRAS
60
10000
70
10000
80
10000
ns
RAS pulse width in
fast page mode
tRASP
60
200000
70
200000
80
200000
ns
CAS pulse width
tCAS
20
10000
20
10000
20
10000
ns
RAS hold time
tRSH
20
–
20
–
20
–
ns
CAS hold time
tCSH
60
–
70
–
80
–
ns
RAS hold time from
CAS precharge
tRHCP
40
–
45
–
50
–
ns
tCPWD
60
–
65
–
70
–
ns
(Fast page mode)
CAS precharge to
WRITE delay time
(FPM read-modify-write)
Semiconductor Group
130
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
AC Characteristics (cont’d)4)
TA = 0 to 70 ˚C; VCC = 5 V ± 10 %; tT = 5 ns
Parameter
Symbol
Limit Values
-60
Unit
-70
-80
min.
max.
min.
max.
min.
max.
RAS to CAS
delay time 11)
tRCD
20
40
20
50
20
60
ns
RAS to column
address delay
time 12)
tRAD
15
30
15
35
15
40
ns
CAS to RAS
precharge time
tCRP
5
–
5
–
10
–
ns
CAS precharge time
tCP
10
–
10
–
10
–
ns
Row address setup
time
tASR
0
–
0
–
0
–
ns
Row address hold
time
tRAH
10
–
10
–
10
–
ns
Column address
setup time
tASC
0
–
0
–
0
–
ns
Column address hold tCAH
time
15
–
15
–
15
–
ns
Column address to
RAS lead time
tRAL
30
–
35
–
40
–
ns
Read command
setup time
tRCS
0
–
0
–
0
–
ns
Read command hold
time 8)
tRCH
0
–
0
–
0
–
ns
Read command hold
time ref. to RAS 8)
tRRH
0
–
0
–
0
–
ns
Write command hold
time
tWCH
10
–
15
–
15
–
ns
Write command hold
time ref. to RAS
tWCR
50
–
55
–
60
–
ns
Write command
pulse width
tWP
10
–
15
–
15
–
ns
Write command to
RAS lead time
tRWL
20
–
20
–
20
–
ns
Write command to
CAS lead time
tCWL
20
–
20
–
20
–
ns
Data setup time 9)
tDS
0
–
0
–
0
–
ns
Semiconductor Group
131
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
AC Characteristics (cont’d)4)
TA = 0 to 70 ˚C; VCC = 5 V ± 10 %; tT = 5 ns
Parameter
Symbol
Limit Values
-60
Unit
-70
-80
min.
max.
min.
max.
min.
max.
tDH
15
–
15
–
15
–
ns
Refresh period
tREF
–
16
–
16
–
16
ms
Write command
setup time 10)
tWCS
0
–
0
–
0
–
ns
CAS to WRITE delay tCWD
time 10)
50
–
50
–
50
–
ns
RAS to WRITE delay tRWD
time 10)
90
–
100
–
110
–
ns
Column address to
tAWD
WRITE delay time 10)
60
–
65
–
70
–
ns
CAS setup time (CBR tCSR
cycle)
5
–
5
–
5
–
ns
Data hold time
9)
CAS hold time (CBR
cycle)
tCHR
15
–
15
–
15
–
ns
RAS to CAS
precharge time
tRPC
0
–
0
–
0
–
ns
CAS precharge time
(CAS before RAS
counter test cycle)
tCPT
30
–
40
–
40
–
ns
Write to RAS
precharge time
(CBR cycle)
tWRP
10
–
10
–
10
–
ns
Write to RAS hold
time (CBR cycle)
tWRH
10
–
10
–
10
–
ns
OE command hold
time
tOEH
20
–
20
–
20
–
ns
OE acces time
tOEA
–
20
–
20
–
20
ns
RAS hold time
referenced to OE
tROH
10
–
10
–
10
–
ns
Output buffer turn-off
delay from OE
tOEZ
0
20
0
20
0
20
ns
Data to CAS low
delay 14)
tDZC
0
–
0
–
0
–
ns
Semiconductor Group
132
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
AC Characteristics (cont’d)4)
TA = 0 to 70 ˚C; VCC = 5 V ± 10 %; tT = 5 ns
Parameter
Symbol
Limit Values
-60
Unit
-70
-80
min.
max.
min.
max.
min.
max.
Data to OE low
delay 14)
tDZ0
0
–
0
–
0
–
ns
CAS high to data
delay 15)
tCDD
20
–
20
–
20
–
ns
OE high to data
delay 15)
tODD
20
–
20
–
20
–
ns
CAS hold time after
OE low
tOECH
20
–
20
–
20
–
ns
Capacitance
TA = 0 to 70 ˚C; VCC = 5 V ± 10 %; f = 1 MHz
Parameter
Symbol
Limit Values
min.
max.
Unit
Input capacitance (A0 to A9)
Ci1
–
5
pF
Input capacitance (RAS, CAS, WE)
Ci2
–
7
pF
Output capacitance (IO1 to IO8)
Cio
–
7
pF
Semiconductor Group
133
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
Notes:
1) All voltages are referenced to VSS
2)
ICC1 , ICC3 , ICC4 and ICC6 depend on cycle rate.
3)
ICC1 , ICC4 depend on output loading.
4) An initial pause of 200 µs is required after power-up followed by 8 RAS cycles of which at least one cycle has
to be a refresh cycle, before proper device operation is achieved. In case of using the internal refresh counter,
a minimum of 8 CAS-before-RAS initialization cycles instead of 8 RAS cycles are required.
5)
Vih (min.) and Vil (max.) are reference levels for measuring timing of input signals. Transition times are also
measured between Vih and Vil .
6) Measured with a load equivalent to 2 TTL loads and 100 pF.
7)
toff (max.), tOEZ (max.) defines the time at which the output achieves the open-circuit conditions and are not
referenced to output voltage levels.
8) Either tRCH or
tRRH must be satisfied for a read cycle.
9) These parameters are references to the CAS leading edge in early write and to the WRITE leading edge in
read-write cycles.
10) tWCS , tRWD , tCWD and tAWD are not restrictive operating parameters. They are included in the data sheet as
electrical characteristics only.
If tWCS > tWCS (min.), the cycle is an early write cycle and data out pin will remain open-circuit (high impedance)
through the entire cycle; if tRWD > tRWD (min.), tCWD > tCWD (min.) and tAWD > tAWD (min.), the cycle is a readwrite cycle and I/O will contain data read from the selected cell. If neither of the above sets of conditions is
satisfied, the condition of I/O (at access time) is indeterminate.
11) Operation within the tRCD (max.) limit ensure that tRAC (max.) can be met. tRCD (max.) is specified as a
reference point only. If tRAD is greater than the specified tRCD (max.) limit, then access time is controlled by
tCAC .
12) Operation within the tRAD (max.) limit ensured that tRAC (max.) can be met. tRAD (max.) is specified as a
reference point only. If tRAD is greater than the specified tRAD (max.) limit, then access time is controlled by tAA .
13) AC measurements assume tT = 5 ns.
14) Either tDZC or tDZO must be satisfied.
15) Either tCDD or tODD must be satisfied.
Semiconductor Group
134
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
tRC
tRAS
RAS
V
IH
VIL
tCSH
V
IH
VIL
tRAD
tASR
A0 - A9
V
IH
VIL
tRAL
tCAH
tASC
tASR
Column
Address
Row
Address
Row
Address
tRCH
tRAH tRCS
WRITE
OE
I/O1-I/O8
(Inputs)
tRRH
V
IH
VIL
tAA
tOEA
V
IH
VIL
tCDD
tDZC
tODD
tDZO
V
IH
tCAC
VIL
tCLZ
V
OH
I/O1-I/O8
(Outputs) V
Hi Z
tOFF
tOEZ
Valid Data Out
OL
tRAC
“H” or “L”
Read Cycle
Semiconductor Group
tCRP
tRSH
tCAS
tRCD
CAS
tRP
135
Hi Z
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
tRC
tRAS
RAS
V
IH
VIL
tCSH
tRCD
tRSH
tCAS
V
IH
CAS
VIL
tRAD
tASR
A0 - A9
V
IH
VIL
tASR
Column
Address
Row
Address
tWCS
Row
Address
tCWL
t WP
V
IH
VIL
tWCH
tRWL
OE
V
IH
VIL
tDS
I/O1-I/O8
(Inputs)
tDH
V
IH
Valid Data In
VIL
V
OH
I/O1-I/O8
(Outputs) V
OL
Hi Z
“H” or “L”
Write Cycle (Early Write)
Semiconductor Group
136
tCRP
tRAL
tCAH
tASC
tRAH
WRITE
tRP
.
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
tRC
tRAS
RAS
V
IH
VIL
tCSH
tRCD
VIL
tRAD
tASR
A0 - A9
V
IH
VIL
tCAH
tASC
tRAL
tASR
tCWL
tRWL
tWP
V
IH
VIL
tOEH
OE
I/O1-I/O8
(Inputs)
V
IH
VIL
tODD
tDZO
tDZC
tDS
tDH
tOEZ
V
IH
Valid Data
VIL
tCLZ
tOEA
I/O1-I/O8 VOH
(Outputs)
Hi-Z
Hi-Z
VOL
“H” or “L”
Write Cycle (OE Controlled Write)
Semiconductor Group
137
.
Row
Address
Column
Address
Row
Address
tRAH
WRITE
tCRP
tRSH
tCAS
V
IH
CAS
tRP
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
tRWC
tRAS
RAS
V
IH
tCSH
VIL
tRSH
tCAS
tRCD
V
IH
CAS
V
IH
tCAH
tASR
tASC
tASR
VIL
Column
Address
Row
Address
Row
Address
tCWL
tRWL
tAWD
tRAD
tCWD
tRWD
tWP
V
IH
WRITE
tCRP
VIL
tRAH
A0 - A9
tRP
VIL
tAA
tOEA
tRCS
tOEH
V
IH
OE
VIL
tDZO
tDS
tDZC
I/O1-I/O8
(Inputs)
tDH
V
IH
Valid
Data in
VIL
tCLZ
tCAC
tOEZ
V
I/O1-I/O8
OH
(Outputs) VOL
Data
Out
tRAC
“H” or “L”
Read-Write (Read-Modify-Write) Cycle
Semiconductor Group
tODD
138
Semiconductor Group
Fast Page Mode Read-Modify-Write Cycle
139
IH
IH
IH
IH
V
IH
V IL
V
V IL
V
V IL
V
V IL
V
V IL
IH
OL
I/O1-I/O8 VOH
(Outputs) V
I/O1-I/O8
(Inputs) V IL
OE
WRITE
A0-A9
CAS
RAS
V
tASR
tRAC
tCAS
tAA
tOEA
tCAC
tDS
tOEH
Data In
tCAC
tCLZ
tOEZ
tWP
tDS
tDH
Data In
tODD
Data
Out
tOEA
tAWD
tCPA
tAA
tDZC
tCAS
tPRWC
tCPWD
tCWD
tCAH
Column
Address
tASC
tCP
tCWL
tWP
tOEZ tDH
tODD
Data
Out
tAWD
tRWD
tCWD
Column
Address
tASC
tCAH
tDZC
tCLZ
tDZO
tRCS
“H” or “L”
Row
Address
tRAD
tRAH
tRCD
tCSH
tRASP
tOEH
tDZC
tCWL
tAA
tCLZ
tCPA
tRAL
tDS
tOEZ
tDH
tOEH
tRWL
tCWL
tWP
Data In
tODD
Data
Out
tOEA
tAWD
tCPWD
tCWD
Column
Address
tASC
tCAH
tCAS
tRSH
tCRP
Row
Address
tASR
tRP
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
tRASP
tRP
V
IH
RAS
VIL
tCP
tCAS
V
IH
CAS
VIL
tASR
A0-A9
VIL
tCAS
tCAS
tCRP
tCSH
tRAH
V
IH
tRHCP
tRSH
tPC
tRCD
tCAH
tASC
Row
Addr
tASC
Column
Address
tCAH
tCAH
tASR
tASC
Column
Address
Column
Address
tRAD
Row
Address
tRCH
tRCH
tRCS
tRCS
tRCS
tCPA
tAA
tCPA
tAA
tOEA
V
IH
WRITE
VIL
tAA
tOEA
V
IH
OE
I/O1-I/O8
(Inputs)
VIL
tOEA
VIL
tCAC
tRAC
tCLZ
tOFF
tOEZ
tCAC
tOFF
tCLZ
tOEZ
V
I/O1-I/O8 OH
(Outputs) V
Valid
Data Out
OL
“H” or “L”
Fast Page Mode Read Cycle
Semiconductor Group
140
tODD
tODD
tODD
tCDD
tDZO
tDZO
tDZO
V
IH
tDZC
tDZC
tDZC
tRRH
Valid
Data Out
tCAC
tCLZ
tOFF
tOEZ
Valid
Data Out
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
tRASP
tRP
V
IH
RAS
VIL
tPC
tCAS
tRCD
VIL
tRAL
tRAH
tCAH
tASC
tASR
A0-A9
V
IH
VIL
Row
Addr
Column
Address
OE
tASC tCAH
Column
Address
tWCS
tWCH
tWP
V
IH
tCAH
Column
Address
tCWL
tRWL
tWCS
tWCH
tWP
tWCH
tWP
tDH
tDH
VIL
V
IH
VIL
tDH
tDS
I/O1-I/O8
(Inputs)
tASC
tCWL
tWCS
tCWL
tRAD
WRITE
tCRP
tCP
V
IH
CAS
tRSH
tCAS
tCAS
V
IH
VIL
Valid
Data In
tDS
tDS
Valid
Data In
Valid
Data In
V
OH
I/O1-I/O8
(Outputs) V
HI-Z
OL
“H” or “L”
Fast Page Mode Early Write Cycle
Semiconductor Group
141
tASR
Column
Address
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
tRC
tRAS
RAS
tRP
V
IH
VIL
tCRP
tRPC
V
IH
CAS
VIL
tRAH
tASR
tASR
A0-A9
V
IH
Row
Address
VIL
Row
Address
V
OH
I/O1-I/O8
(Outputs) V
HI-Z
OL
“H” or “L”
RAS-Only Refresh Cycle
Semiconductor Group
142
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
tRC
tRP
RAS
tRP
tRAS
V
IH
VIL
tCRP
tRPC
tCSR
CAS
V
IH
VIL
tRPC
tCHR
tCP
tWRP
tWRH
WRITE
V
IH
VIL
tOEZ
OE
V
IH
VIL
tCDD
I/O1-I/O8
(Inputs)
V
IH
VIL
tODD
V
OH
I/O1-I/O8
(Outputs) V
HI-Z
OL
tOFF
“H” or “L”
CAS-Before-RAS Refresh Cycle
Semiconductor Group
143
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
tRC
tRC
RAS
tRP
tRAS
V
IH
tRP
tRAS
VIL
tRCD
tRSH
tCRP
tCHR
CAS
V
IH
tRAD
VIL
tASC
tRAH
tASR
A0-A9
V
IH
VIL
tWRP
Column
Address
Row
Addr
Row
Address
tRRH
tRCS
WRITE
OE
tASR
tWRH
tCAH
V
IH
VIL
tAA
tOEA
V
IH
VIL
tDZC
tCDD
tDZO
tODD
I/O1-I/O8
(Inputs)
V
IH
VIL
tOFF
tCAC
tCLZ
tOEZ
tRAC
V
I/O1-I/O8
OH
(Outputs) V
Valid Data Out
OL
“H” or “L”
Hidden Refresh Cycle (Read)
Semiconductor Group
144
HI-Z
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
tRC
tRC
tRP
RAS
tRAS
V
IH
WRITE
OE
tRSH
VIL
tCRP
tRAD
tRAH
tASC
tCAH
V
IH
VIL
Row
Addr
tASR
Row
Address
Column
Address
tWCS
tWCH
tWP
V
IH
VIL
V
IH
VIL
tDS
I/O1-I/O8
(Inputs)
tCHR
V
IH
tASR
A0-A9
tRP
VIL
tRCD
CAS
tRAS
V
IH
tDH
Valid Data
VIL
V
OH
I/O1-I/O8
(Outputs) V
HI-Z
OL
“H” or “L”
Hidden Refresh Cycle (Early Write)
Semiconductor Group
145
HYB 514800BJ -60/-70/-80
512k x 8 DRAM
V
RAS
V
IL
tCHR
tCSR
V
CAS
V
IL
V
tWRP
tRCS
tWRH
V
tASR
Row
Address
Column
Address
IL
V
tRAL
tCAH
tASC
IH
Read Cycle
WRITE
tRSH
tCAS
tCPT
IH
V
A0-A9
tRP
tRAS
IH
tAA
tCAC
tRRH
tRCH
IH
IL
tOEA
OE
V
V
I/O1-I/O8
(Inputs)
IH
IL
V
V
tDZC
tDZO
IH
IL
tOFF
tCLZ
I/O1-I/O8
(Outputs)
V
OH
VOL
Write Cycle
V
I/O1-I/O8
(Outputs)
V
tWCH
IH
IL
V
V
IH
V
IH
V
IL
V
V
OE
tWRP
HI-Z
tRCS
tWRH
IH
V
tAA
tWP
tOEA
tOEH
IH
IL
V
tCWL
tRWL
tAWD
tCWD
tCAC
IL
V
tDH
Valid Data In
IL
Read-Modify-Write Cycle
WRITE
tRWL
tCWL
IH
tDS
I/O1-I/O8
(Inputs)
Valid Data Out
tWCS
tWRP
IL
V
OE
tOEZ
tWRH
V
WRITE
tCDD
tODD
I/O1-I/O8
(Inputs)
V
I/O1-I/O8
(Outputs)
V
OH
VOL
IH
tDH
Data In
IL
tCLZ
tODD
tOEZ
tCAC
D.Out
HI-Z
CAS-Before-RAS Refresh Counter Test Cycle
Semiconductor Group
tDS
tDZC
tDZO
146
HI-Z