INFINEON HYB511000BJ-70

1 M × 1-Bit Dynamic RAM
Low Power 1 M × 1-Bit Dynamic RAM
HYB 511000BJ-50/-60/-70
HYB 511000BJL-50/-60/-70
Advanced Information
1 048 576 words by 1-bit organization
Fast access and cycle time
50 ns access time
95 ns cycle time (-50 version)
60 ns access time
130 ns cycle time (-60 version)
70 ns access time
130 ns cycle time (-70 version)
• Fast page mode cycle time
35 ns (-50 version)
40 ns (-60 version)
45 ns (-70 version)
• Low power dissipation
max. 495 mW active (-50 version)
max. 440 mW active (-60 version)
max. 385 mW active (-70 version)
max. 5.5 mW standby
max. 1.1 mW standby for L-version
•
•
•
•
•
•
•
•
•
Single + 5 V (± 10 %) supply with a built-in
VBB generator
Output unlatched at cycle end allows twodimensional chip selection
Common I/O capability using “early write”
operation
Read-modify-write, CAS-before-RAS
refresh, RAS-only refresh, hidden-refresh,
fast page mode capability and test mode
capability
All inputs, outputs and clocks
TTL-compatible
512 refresh cycles/8 ms
512 refresh cycles/64 ms
for L-version only
Plastic Packages:
P-SOJ-26/20-1
Ordering Information
Type
Ordering Code
Package
Description
HYB 511000BJ-50
Q67100-Q1056
P-SOJ-26/20-1
DRAM (access time 50 ns)
HYB 511000BJ-60
Q67100-Q518
P-SOJ-26/20-1
DRAM (access time 60 ns)
HYB 511000BJ-70
Q67100-Q519
P-SOJ-26/20-1
DRAM (access time 70 ns)
HYB 511000BJL-50
on request
P-SOJ-26/20-1
DRAM (access time 50 ns)
HYB 511000BJL-60
Q67100-Q526
P-SOJ-26/20-1
DRAM (access time 60 ns)
HYB 511000BJL-70
Q67100-Q527
P-SOJ-26/20-1
DRAM (access time 70 ns)
Semiconductor Group
33
01.95
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
The HYB 511000BJ/BJL is the new generation dynamic RAM organized as 1 048 576 words by
1-bit. The HYB 511000BJ/BJL utilizes CMOS silicon gate process technology as well as advanced
circuit techniques to provide wide operating margins, both internally and for the system user.
Multiplexed address inputs permit the HYB 511000BJ/BJL to be packaged in a standard plastic
P-SOJ-26/20. This package size provides high system bit densities and is compatible with
commonly used automatic testing and insertion equipment. System oriented features include single
+ 5 V (± 10 %) power supply, direct interfacing with high-performance logic device families such as
Schottky TTL. “Test Mode” function is implemented. The HYB 511000BJL are specially selected for
low power battery backup applications.
Pin Definitions and Functions
Pin No.
Function
A0-A9
Address Inputs
RAS
Row Address Strobe
DI
Data In
DO
Data Out
CAS
Column Address Strobe
WE
Read/Write Input
VCC
Power Supply (+ 5 V)
VSS
Ground (0 V)
TF
Test Function
N.C.
No Connection
Semiconductor Group
34
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
Pin Configuration
(top view)
SOJ-26/20-1
Semiconductor Group
35
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
Block Diagram
Semiconductor Group
36
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-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
Test Function Input voltage ....................................................................................... – 1 to + 10.5 V
Power supply voltage...................................................................................................... – 1 to + 7 V
Power dissipation..................................................................................................................... 0.6 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.
DC Characteristics
TA = 0 to 70 ˚C; VSS = 0 V; VCC = 5 V ± 10 %
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)
Test enable input high voltage
VIH(TF)
VCC + 4.5 10.5
V
1)
Test disable input low voltage
VIL(TF)
– 1.0
VCC + 1.0 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 except TF
(0 V ≤ VIN ≤ 6.5 V, all other pins = 0 V)
II(L)
– 10
10
µA
1)
Output leakage current
(DO is disabled, 0 V ≤ VOUT ≤ 5.5 V)
IO(L)
– 10
10
µA
1)
Average VCC supply current:
-50 version
-60 version
-70 version
(RAS, CAS, address cycling: tRC = tRC min.)
ICC1
–
–
–
90
80
70
mA
mA
mA
2) 3)
–
2
mA
–
Standby VCC supply current (RAS = CAS = VIH) ICC2
Semiconductor Group
37
2) 3)
2) 3)
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
DC Characteristics (cont’d)
TA = 0 to 70 ˚C; VSS = 0 V; VCC = 5 V ± 10 %
Parameter
min.
max.
Unit Test
Condition
–
–
–
90
80
70
mA
mA
mA
2)
–
–
–
70
60
50
mA
mA
mA
2) 3)
–
–
1
200
mA
µA
1)
–
–
–
90
80
70
mA
mA
mA
2)
ICC7
–
300
µA
2)
Input leakage current (only TF)
(0 V ≤ VIN (TF) ≤ VCC + 0.5 V)
All other pins not under test = 0 V
IITF(L)
– 10
+ 10
µA
1)
Test function input current
(VCC + 4.5 ≤ VIN (TF) ≤ 10.5 V)
ITF
–
1
mA
1)
Average VCC supply current during RAS only
refresh cycles:
-50 version
-60 version
-70 version
Symbol
Limit Values
ICC3
2)
2)
(RAS cycling: CAS = VIH : tRC = tRC min.)
Average VCC supply current during fast page
modes:
-50 version
-60 version
-70 version
(RAS = VIL , CAS, address cycling:
tPC = tPC min.)
ICC4
Standby VCC supply current
L-Version
(RAS = CAS = VCC – 0.2 V)
ICC5
Average VCC supply current during
CAS-before-RAS refresh mode:
-50 version
-60 version
-70 version
(RAS, CAS, address cycling: tRC = tRC min.)
ICC6
For L-version only:
Battery backup current:
average power supply current, battery backup
mode:
(CAS = CAS before RAS cycling or 0.2 V,
WE = VCC – 0.2 V or 0.2 V,
A0 to A9 = VCC – 0.2 V or 0.2 V,
DI = VCC – 0.2 V or 0.2 V open,
tRC = 125 µs, tRAS = tRAS min. ~ 1 µs)
Semiconductor Group
38
2) 3)
2) 3)
1)
2)
2)
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
AC Characteristics 4) 13)
TA = 0 to 70 ˚C; VCC = 5 V ± 10 %; tT = 5 ns
Parameter
Symbol
Limit Values
-50
Unit
-60
-70
min.
max.
min.
max.
min.
max.
Random read or write
cycle time
tRC
95
–
110
–
130
–
ns
Read-write cycle time
tRWC
115
–
130
–
155
–
ns
Fast page mode cycle
time
tPC
35
–
40
–
45
–
ns
Fast page mode readwrite cycle time
tPRWC
55
–
60
–
70
–
ns
Access time from
RAS
tRAC
–
50
–
60
–
70
ns
6) 11)
Access time from
CAS
tCAC
–
15
–
15
–
20
ns
6) 11)
Access time from column tAA
6) 12)
address
–
25
–
30
–
35
ns
tCPA
Access time from CAS
6)
precharge
–
30
–
35
–
40
ns
CAS to output in low-Z 6) tCLZ
0
–
0
–
0
–
ns
tOFF
0
15
0
20
0
20
ns
tT
3
50
3
50
3
50
ns
RAS precharge time
tRP
35
–
40
–
50
–
ns
RAS pulse width
tRAS
50
10.000
60
10.000
70
10.000
ns
RAS pulse width (fast
page mode)
tRASP
50
100.000 60
100.000 70
100.000 ns
RAS hold time
tRSH
15
–
15
–
20
–
ns
CAS hold time
tCSH
50
–
60
–
70
–
ns
RAS hold time from CAS
precharge (FPM)
tRHCP
30
–
35
–
45
–
ns
CAS precharge to WE
delay time (FPM RMW)
tCPWD
30
–
35
–
45
–
ns
CAS pulse width
tCAS
15
10.000
15
10.000
20
10.000
ns
tRCD
20
35
20
45
20
50
ns
Output buffer turn-off
delay
7)
Transition time
(rise and fall)
5)
RAS to CAS delay
time
Semiconductor Group
11)
39
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
AC Characteristics (cont’d) 4) 13)
TA = 0 to 70 ˚C; VCC = 5 V ± 10 %; tT = 5 ns
Parameter
Symbol
Limit Values
-50
RAS to column address
tRAD
12)
delay time
tCRP
CAS to RAS precharge
time
CAS precharge time (fast tCP
page mode)
Unit
-60
-70
min.
max.
min.
max.
min.
max.
15
25
15
30
15
35
ns
5
–
5
–
5
–
ns
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
time
tCAH
15
–
15
–
15
–
ns
Column address to RAS
lead time
tRAL
25
–
30
–
35
–
ns
Read command setup
time
tRCS
0
–
0
–
0
–
ns
tRCH
0
–
0
–
0
–
ns
Read command hold time tRRH
8)
referenced to RAS
0
–
0
–
0
–
ns
Write command hold time tWCH
10
–
10
–
15
–
ns
Read command hold
time
8)
Write command pulse
width
tWP
10
–
10
–
15
–
ns
Write command to RAS
lead time
tRWL
15
–
15
–
20
–
ns
Write command to CAS
lead time
tCWL
15
–
15
–
20
–
ns
Data setup time
9)
tDS
0
–
0
–
0
–
ns
Data hold time
9)
tDH
10
–
15
–
15
–
ns
Refresh period
tREF
–
8
–
8
–
8
ms
Refresh period for
L-version only
tREF
–
64
–
64
–
64
ms
Semiconductor Group
40
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
AC Characteristics (cont’d) 4) 13)
TA = 0 to 70 ˚C; VCC = 5 V ± 10 %; tT = 5 ns
Parameter
Symbol
Limit Values
-50
Unit
-60
-70
min.
max.
min.
max.
min.
max.
0
–
0
–
0
–
ns
tCWD
15
–
15
–
20
–
ns
RAS to WE delay time 10) tRWD
50
–
60
–
70
–
ns
Column address to WE
tAWD
10)
delay time
25
–
30
–
35
–
ns
Write command setup
tWCS
10)
time
CAS to WE delay
time
10)
CAS setup time (CASbefore-RAS cycle)
tCSR
5
–
5
–
5
–
ns
CAS hold time (CASbefore-RAS cycle)
tCHR
10
–
15
–
15
–
ns
RAS to CAS precharge
time
tRPC
0
–
0
–
0
–
ns
CAS precharge time
(CAS-before-RAS
counter test cycle)
tCPT
25
–
30
–
40
–
ns
Test mode enable setup
time referenced to RAS
tTES
0
–
0
–
0
–
ns
Test mode enable hold
time referenced to RAS
tTEHR
0
–
0
–
0
–
ns
Test mode enable hold
time referenced to CAS
tTEHC
0
–
0
–
0
–
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, DI)
CI1
–
5
pF
Input capacitance (RAS, CAS, WE, TF)
CI2
–
7
pF
Output capacitance (DO)
CO
–
7
pF
Semiconductor Group
41
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
Notes :
1) All voltages are referenced to VSS .
2) ICC1 , ICC3 , ICC4, ICC6, ICC7 depend on cycle rate.
3) ICC1 and ICC4 depend on output loading. Specified values are measured with the output open.
4) An initial pause of 200 µs is required after power-up followed by 8 RAS cycles before proper device operation
is achieved. In case of using 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.) defines the time at which the output achieves the open-circuit conditions and is not referenced to
output voltage levels.
8) Either tRCH or tRRH must be satisfied for a read cycle.
9) These parameters are referenced to the CAS leading edge in early write cycles and to the WE 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 read-write
cycle and DO will contain data read from the selected cell. If neither of the above sets of conditions is satisfied,
the condition of DO (at access time) is indeterminate.
11) Operation within the tRCD (max.) limit insures that tRAC (max.) can be met. tRCD (max.) is specified as a reference
point only. If tRCD is greater than the specified tRCD (max.) limit, then access time is controlled by tCAC .
12) Operation within the tRAD (max.) limit insures 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 = 5ns.
Semiconductor Group
42
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
Waveforms
tRC
tRAS
RAS
tRP
V
IH
VIL
tCSH
V
IH
CAS
VIL
tRAD
tASR
A0 - A9
V
IH
VIL
tASC
tRAL
tCAH
tASR
Column
Address
Row
Address
Row
Address
tRCH
tRAH tRCS
WE
tRRH
V
IH
VIL
tAA
tCAC
tOFF
tCLZ
V
OH
DO
(Output) V
OL
Hi Z
Valid Data Out
tRAC
“H” or “L”
Read Cycle
Semiconductor Group
tCRP
tRSH
tCAS
tRCD
43
Hi Z
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
tRC
tRAS
RAS
V
IH
VIL
tCSH
tRCD
tRSH
tCAS
V
IH
CAS
VIL
tRAD
tASR
A0 - A9
V
IH
VIL
tWCS
VIL
DO
(Output)
tCWL
tWCH
tRWL
tDH
V
IH
Valid Data In
VIL
V
OH
Hi Z
VOL
“H” or “L”
Write Cycle (Early Write)
Semiconductor Group
44
.
Row
Address
t WP
V
IH
tDS
DI
(Input)
tASR
Column
Address
Row
Address
tCRP
tRAL
tCAH
tASC
tRAH
WE
tRP
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
tRWC
tRAS
tRP
RAS
tCSH
tRSH
tCAS
tRCD
CAS
V
IH
tCRP
VIL
tRAH
V
IH
tASR
A0 - A9 V
IL
tCAH
tASR
tASC
Column
Address
Row
Address
Row
Address
tAWD
tRAD
tCWD
tRWD
tCWL
tRWL
tWP
V
IH
WE
VIL
tAA
tDS
tRCS
DI
(Input)
tDH
V
IH
Valid
Data in
VIL
tCLZ
tCAC
tOFF
V
OH
DO
(Output) VOL
Data Out
tRAC
“H” or “L”
Read-Write (Read-Modify-Write) Cycle
Semiconductor Group
45
Semiconductor Group
Fast Page Mode Read-Modify-Write Cycle
46
IH
IH
IH
IH
V
V IL
V
V IL
V
V IL
V
V IL
OL
DO
(Output) V
V
OH
IH
DI
(Input) V
IL
WE
A0-A9
CAS
RAS
V
tASR
tCAH
tCAS
tCAC
tAWD
tAA
tCLZ
tRWD
tCWD
Column
Address
tASC
tRAC
tRCS
“H” or “L”
Row
Address
tRAD
tRAH
tRCD
tCSH
Data
Out
tDS
tDH
Data In
tWP
tOFF
tAWD
tCLZ
tCAC
tAA
tCPA
tCWL
tWP
Data
Out
tDS
tDH
Data In
tCAS
tCPWD
tCWD
tCAH
Column
Address
tASC
tCP
tPRWC
tRASP
tOFF
tAWD
tCPWD
tCWD
tCLZ
tAA
tCPA
tCWL
Column
Address
tASC
tCAH
tDH
Data
Out
tDS
tOFF
tRWL
tCWL
tWP
Data In
tRAL
tCAS
tRSH
tCRP
Row
Address
tASR
tRP
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-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
V
IH
WE
VIL
tAA
tCAC
tCAC
tRAC
tOFF
tCLZ
V
OH
DO
(Output) V
OL
“H” or “L”
Fast Page Mode Read Cycle
Semiconductor Group
tCAC
tOFF
tCLZ
Valid
Data Out
47
tRRH
tOFF
tCLZ
Valid
Data Out
Valid
Data Out
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-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
tASC tCAH
Column
Address
tWCS
tWCH
tWP
V
IH
tCAH
Column
Address
tCWL
tRWL
tWCS
tWCH
tWP
tWCH
tWP
tDH
tDH
VIL
tDH
tDS
DI
(Input)
tASC
tCWL
tWCS
tCWL
tRAD
WE
tCRP
tCP
V
IH
CAS
tRSH
tCAS
tCAS
V
IH
VIL
Valid
Data In
tDS
Valid
Data In
DO
V
(Output) OH
V
Valid
Data In
HI-Z
OL
“H” or “L”
Fast Page Mode Early Write Cycle
Semiconductor Group
tDS
48
tASR
Row
Address
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-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
DO
(Output) V
OL
HI-Z
“H” or “L”
RAS-Only Refresh Cycle
Semiconductor Group
49
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
tRC
tRP
RAS
tRP
tRAS
V
IH
VIL
tCRP
tRPC
tCSR
CAS
V
IH
VIL
tRPC
tCHR
tCP
tWRP
tWRH
WE
V
IH
VIL
V
OH
DO
(Output) VOL
HI-Z
tOFF
“H” or “L”
CAS-Before-RAS Refresh Cycle
Semiconductor Group
50
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
tRC
tRC
RAS
tRP
tRAS
V
IH
tRP
tRAS
VIL
tRCD
tRSH
tCRP
tCHR
CAS
V
IH
tRAD
VIL
tRAH
tASC
tASR
A0-A9
V
IH
VIL
tWRP
Column
Address
Row
Addr
Row
Address
tRRH
tRCS
WE
tASR
tWRH
tCAH
V
IH
VIL
tAA
tOFF
tCAC
tCLZ
tRAC
V
OH
DO
(Output) V
OL
Valid Data Out
“H” or “L”
Hidden Refresh Cycle (Read)
Semiconductor Group
51
HI-Z
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
tRC
tRC
tRP
RAS
tRAS
V
IH
WE
tRSH
VIL
tCRP
tRAD
tRAH
tASC
tCAH
V
IH
VIL
Row
Addr
tASR
Row
Address
Column
Address
tWCS
tWCH
tWP
V
IH
VIL
tDS
DI
(Input)
tCHR
V
IH
tASR
A0-A9
tRP
VIL
tRCD
CAS
tRAS
V
IH
tDH
Valid Data
V
IL
V
OH
DO
(Output) V
OL
HI-Z
“H” or “L”
Hidden Refresh Cycle (Early Write)
Semiconductor Group
52
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
RAS
V
IH
IL
tCHR
tCSR
V
CAS
V
V
Read Cycle
WE
IL
tASR
Row
Address
Column
Address
IL
V
tRAL
tCAH
tASC
IH
tWRP
V
tRSH
tCAS
tCPT
IH
V
A0-A9
tRP
tRAS
V
tAA
tCAC
tRCS
tWRH
tRRH
tRCH
IH
IL
tOFF
tCLZ
DO
(Output)
V
OH
VOL
Write Cycle
tRWL
tCWL
tWRH
V
WE
Valid Data Out
tWCS
tWRP
V
IH
tWCH
IL
tDS
DI
(Input)
DO
(Output)
V
V
IH
V
Read-Modify-Write Cycle
V
WE
Valid Data In
IL
IH
V
IL
V
tDH
tWRP
HI-Z
tRCS
tWRH
tCWL
tRWL
tAWD
tCWD
tWP
tCAC
IH
IL
tAA
tDS
tDH
DI
(Input)
DO
(Output)
V
V
IH
Data In
IL
V
OH
VOL
Valid Data Out
HI-Z
HI-Z
“H” or “L”
CAS-Before-RAS Refresh Counter Test Cycle
Semiconductor Group
tOFF
tCAC
t CLZ
53
HYB 511000BJ/BJL-50/-60/-70
1 M × 1-DRAM
Test Mode
The HYB 511000B/BL is the RAM organized 1 048 576 words by 1-bit, it is internally organized
262 144 words by 4-bit. In “Test Mode”, data would be written into a number of sectors (4 sectors)
in parallel and retrieved the same way. If upon reading, all bits are equal (all “H” or “L”), the data
output pin indicates a same data as all bits. In this case, the data output pin indicates an expected
data for good parts, the data output pin indicates a complementary data for bad parts. And also, if
any of the bits differed, the data output pin would indicate a high impedance state for bad parts. The
next figure shows the block diagram including its truth table when “Test Mode” is used.
In test mode, 1M DRAM can be tested as if it were 256K DRAM by the following method.
“Test Mode” function is performed on any of the timing cycles including fast page mode when “TF”
pin is held on “super voltage (VCC + 4.5 V (VCC = 5 V ± 10 %), max. voltage = 10.5 V)” for the
specified period (tTES , tTEHR and tTEHC ; see next figure). The address input of A9 is ignored in the
“Test Mode”. On the other hand, normal operation requires the “TF” pin be connected to VIL(TF)
level, or left unconnected on the printed wiring board. The “Test Mode” function reduces test times
(1/4; in case of using N test pattern).
RAS
V
IH
VIL
tTEHC
CAS
V
IH
VIL
tTES
TF
tTEHR
V
IH,TF
VIL,TF
Test Mode Cycle
Semiconductor Group
54