TMS27C512-100JL4 [TI]

64KX8 UVPROM, 100ns, CDIP28, 0.600 INCH, WINDOWED, CERAMIC, DIP-28;
TMS27C512-100JL4
型号: TMS27C512-100JL4
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

64KX8 UVPROM, 100ns, CDIP28, 0.600 INCH, WINDOWED, CERAMIC, DIP-28

可编程只读存储器 电动程控只读存储器 CD 内存集成电路
文件: 总13页 (文件大小:182K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
TMS27C512 65536 BY 8-BIT UV ERASABLE  
TMS27PC512 65536 BY 8-BIT  
PROGRAMMABLE READ-ONLY MEMORIES  
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997  
J PACKAGE  
(TOP VIEW)  
Organization . . . 65536 by 8 Bits  
Single 5-V Power Supply  
Pin Compatible With Existing 512K MOS  
ROMs, PROMs, and EPROMs  
A15  
A12  
A7  
A6  
A5  
A4  
A3  
A2  
A1  
V
CC  
1
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
A14  
A13  
A8  
2
All Inputs/Outputs Fully TTL Compatible  
Max Access/Min Cycle Time  
3
4
A9  
5
V
± 10%  
CC  
A11  
G/V  
A10  
E
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
6
’27C/PC512-10  
’27C/PC512-12  
’27C/PC512-15  
’27C/PC512-20  
’27C/PC512-25  
100 ns  
120 ns  
150 ns  
200 ns  
250 ns  
7
PP  
8
9
A0  
10  
11  
12  
13  
14  
DQ0  
DQ1  
DQ2  
GND  
Power Saving CMOS Technology  
Very High-Speed SNAP! Pulse  
Programming  
3-State Output Buffers  
400-mV Minimum DC Noise Immunity With  
Standard TTL Loads  
FM PACKAGE  
(TOP VIEW)  
Latchup Immunity of 250 mA on All Input  
and Output Lines  
Low Power Dissipation ( V  
= 5.25 V )  
CC  
4
3 2 1 32 31 30  
– Active . . . 158 mW Worst Case  
– Standby . . . 1.4 mW Worst Case  
(CMOS Input Levels)  
5
6
7
8
9
29  
A6  
A5  
A4  
A3  
A2  
A1  
A0  
NC  
DQ0  
A8  
A9  
A11  
28  
27  
Temperature Range Options  
26 NC  
512K EPROM Available With MIL-STD-883C  
Class B High Reliability Processing  
(SMJ27C512)  
G/V  
A10  
E
DQ7  
DQ6  
25  
24  
23  
22  
21  
PP  
10  
11  
12  
13  
description  
14 15 16 17 18 19 20  
The TMS27C512 series are 65536 by 8-bit  
(524288-bit), ultraviolet (UV) light erasable,  
electrically programmable read-only memories  
(EPROMs).  
PIN NOMENCLATURE  
The TMS27PC512 series are 65536 by 8-bit  
(524288-bit), one-time programmable (OTP)  
electrically programmable read-only memories  
(PROMs).  
A0A15  
E
Address Inputs  
Chip Enable/Power Down  
DQ0DQ7  
Inputs (programming)/Outputs  
13-V Programming Power Supply  
Ground  
G/V  
PP  
GND  
NC  
No Internal Connection  
Make No External Connection  
5-V Power Supply  
NU  
V
CC  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 1997, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TMS27C512 65536 BY 8-BIT UV ERASABLE  
TMS27PC512 65536 BY 8-BIT  
PROGRAMMABLE READ-ONLY MEMORIES  
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997  
description (continued)  
These devices are fabricated using power-saving CMOS technology for high speed and simple interface with  
MOS and bipolar circuits. All inputs (including program data inputs) can be driven by Series 74 TTL circuits  
without the use of external pullup resistors. Each output can drive one Series 74 TTL circuit without external  
resistors.  
The data outputs are 3-state for connecting multiple devices to a common bus. The TMS27C512 and the  
TMS27PC512 are pin compatible with 28-pin 512K MOS ROMs, PROMs, and EPROMs.  
The TMS27C512 EPROM is offered in a dual-in-line ceramic package (J suffix) designed for insertion in  
mounting hole rows on 15,2-mm (600-mil) centers. The TMS27PC512 OTP PROM is supplied in a 32-lead  
plastic leaded chip carrier package using 1,25-mm (50-mil) lead spacing (FM suffix).  
The TMS27C512 and TMS27PC512 are offered with two choices of temperature ranges of 0°C to 70°C (JL and  
FML suffix) and – 40°C to 85°C (JE and FME suffix). See Table 1.  
All package styles conform to JEDEC standards.  
Table 1. Temperature Range Suffixes  
SUFFIX FOR OPERATING  
FREE-AIR TEMPERATURE RANGES  
EPROM  
AND  
OTP PROM  
0°C TO 70°C  
– 40°C TO 85°C  
TMS27C512-xxx  
TMS27PC512-xxx  
JL  
JE  
FML  
FME  
These EPROMs and OTP PROMs operate from a single 5-V supply (in the read mode), thus are ideal for use  
in microprocessor-based systems. One other 13-V supply is needed for programming. All programming signals  
are TTL level. The device is programmed using the SNAP! Pulse programming algorithm. The SNAP! Pulse  
programmingalgorithmusesaV of13VandaV of6.5Vforanominalprogrammingtimeofsevenseconds.  
PP  
CC  
For programming outside the system, existing EPROM programmers can be used. Locations can be  
programmed singly, in blocks, or at random.  
2
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TMS27C512 65536 BY 8-BIT UV ERASABLE  
TMS27PC512 65536 BY 8-BIT  
PROGRAMMABLE READ-ONLY MEMORIES  
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997  
operation  
The seven modes of operation are listed in Table 2. The read mode requires a single 5-V supply. All inputs are  
TTL level except for V during programming (13 V for SNAP! Pulse) and 12 V on A9 for signature mode.  
PP  
Table 2. Operation Modes  
MODE  
FUNCTION  
OUTPUT  
DISABLE  
PROGRAM  
INHIBIT  
SIGNATURE  
MODE  
READ  
STANDBY PROGRAMMING  
VERIFY  
E
V
V
V
V
V
V
V
V
V
V
IL  
IL  
IH  
IL  
IL  
IH  
IL  
G/V  
PP  
V
IH  
X
V
PP  
V
PP  
IL  
IL  
IL  
V
V
V
V
V
V
V
V
CC  
CC  
CC  
X
CC  
X
CC  
X
CC  
X
CC  
X
CC  
X
V
H
A9  
A0  
V
H
X
X
X
X
X
X
V
V
IH  
IL  
CODE  
DQ0DQ7  
Data Out  
Hi-Z  
Hi-Z  
Data In  
Data Out  
Hi-Z  
MFG  
97  
DEVICE  
85  
X can be V or V  
IL  
H
.
IH  
= 12 V ± 0.5 V.  
V
read/output disable  
When the outputs of two or more TMS27C512s or TMS27PC512s are connected in parallel on the same bus,  
the output of any particular device in the circuit can be read with no interference from the competing outputs  
of the other devices. To read the output of a single device, a low-level signal is applied to the E and G/V pins.  
PP  
All other devices in the circuit should have their outputs disabled by applying a high-level signal to one of these  
pins. Output data is accessed at pins DQ0 through DQ7.  
latchup immunity  
Latchup immunity on the TMS27C512 and TMS27PC512 is a minimum of 250 mA on all inputs and outputs.  
This feature provides latchup immunity beyond any potential transients at the P.C. board level when the devices  
are interfaced to industry-standard TTL or MOS logic devices. Input-output layout approach controls latchup  
without compromising performance or packing density.  
power down  
Active I  
supply current can be reduced from 30 mA to 500 µA (TTL-level inputs) or 250 µA (CMOS-level  
CC  
inputs) by applying a high TTL/CMOS signal to the E pin. In this mode all outputs are in the high-impedance  
state.  
erasure (TMS27C512)  
Before programming, the TMS27C512 EPROM is erased by exposing the chip through the transparent lid  
to a high intensity ultraviolet light (wavelength 2537 angstroms). EPROM erasure before programming is  
necessarytoassurethatallbitsareinthelogichighstate. Logiclowsareprogrammedintothedesiredlocations.  
A programmed logic low can be erased only by ultraviolet light. The recommended minimum exposure dose  
2
2
(UV intensity × exposure time) is 15-W s/cm . A typical 12-mW/cm , filterless UV lamp erases the device in  
21 minutes. The lamp should be located about 2.5 cm above the chip during erasure. It should be noted that  
normal ambient light contains the correct wavelength for erasure. Therefore, when using the TMS27C512, the  
window should be covered with an opaque label.  
3
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TMS27C512 65536 BY 8-BIT UV ERASABLE  
TMS27PC512 65536 BY 8-BIT  
PROGRAMMABLE READ-ONLY MEMORIES  
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997  
initializing (TMS27PC512)  
The one-time programmable TMS27PC512 PROM is provided with all bits in the logic high state, then logic lows  
are programmed into the desired locations. Logic lows programmed into a PROM cannot be erased.  
SNAP! Pulse programming  
The 512K EPROM and OTP PROM are programmed using the TI SNAP! Pulse programming algorithm  
illustrated by the flowchart in Figure 1, which programs in a nominal time of seven seconds. Actual programming  
time varies as a function of the programmer used.  
The SNAP! Pulse programming algorithm uses initial pulses of 100 microseconds (µs) followed by a byte  
verification to determine when the addressed byte has been successfully programmed. Up to 10 (ten) 100-µs  
pulses per byte are provided before a failure is recognized.  
The programming mode is achieved with G/V = 13 V, V  
(eight bits) on pins DQ0 to DQ7. Once addresses and data are stable, E is pulsed.  
= 6.5 V, and E = V . Data is presented in parallel  
IL  
PP  
CC  
More than one device can be programmed when the devices are connected in parallel. Locations can be  
programmed in any order. When the SNAP! Pulse programming routine is complete, all bits are verified with  
V
= 5 V, G/V = V and E = V .  
CC  
PP IL, IL  
program inhibit  
Programming can be inhibited by maintaining a high level input on the E pin.  
program verify  
Programmed bits can be verified when G/V and E = V .  
PP  
IL  
signature mode  
The signature mode provides access to a binary code identifying the manufacturer and type. This mode is  
activated when A9 is forced to 12 V. Two identifier bytes are accessed by toggling A0. All other addresses must  
be held low. the signature code for these devices is 9785. A0 selects the manufacturer’s code 97 (Hex), and  
A0 high selects the device code 85, as shown in Table 3.  
Table 3. Signature Mode  
PINS  
IDENTIFIER  
A0  
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
DQ2  
DQ1  
DQ0  
HEX  
97  
Manufacturer Code  
Device Code  
V
1
1
0
0
0
0
1
0
0
0
1
1
1
0
1
1
IL  
V
IH  
85  
E = G = V , A9 = V , A1A8 = V , A10A15 = V , PGM = V or V  
IL IL IL IH  
.
IL  
H
4
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TMS27C512 65536 BY 8-BIT UV ERASABLE  
TMS27PC512 65536 BY 8-BIT  
PROGRAMMABLE READ-ONLY MEMORIES  
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997  
Start  
Address = First Location  
Program  
Mode  
V
CC  
= 6.5 V ± 0.25 V, G/V = 13 V ± 0.25 V  
PP  
Program One Pulse = t = 100 µs  
Increment Address  
w
No  
Last  
Address  
?
Yes  
Address = First Location  
X = 0  
Program One Pulse = t = 100 µs  
w
No  
Fail  
Increment  
Address  
Verify  
One Byte  
X = X + 1  
X = 10?  
Interactive  
Mode  
Pass  
No  
Last  
Address  
?
Yes  
Yes  
Device Failed  
V
CC  
= 5 V ± 0.5 V, G/V  
= V  
PP IL  
Compare  
All Bytes  
To Original  
Data  
Fail  
Final  
Verification  
Pass  
Device Passed  
Figure 1. SNAP! Pulse Programming Flow Chart  
5
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TMS27C512 65536 BY 8-BIT UV ERASABLE  
TMS27PC512 65536 BY 8-BIT  
PROGRAMMABLE READ-ONLY MEMORIES  
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997  
logic symbols  
EPROM  
65 536 × 8  
OTP PROM  
65 536 × 8  
10  
9
8
7
6
5
4
3
25  
24  
21  
23  
2
26  
27  
1
10  
9
8
7
6
5
4
3
25  
24  
21  
23  
2
26  
27  
1
0
0
A0  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
A0  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
A8  
11  
12  
13  
15  
16  
17  
18  
19  
11  
12  
13  
15  
16  
17  
18  
19  
DQ0  
DQ1  
DQ2  
DQ3  
DQ4  
DQ5  
DQ6  
DQ7  
DQ0  
DQ1  
DQ2  
DQ3  
DQ4  
DQ5  
DQ6  
DQ7  
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
0
0
A
A
65 535  
65 535  
A9  
A9  
A10  
A11  
A12  
A13  
A14  
A15  
E
A10  
A11  
A12  
A13  
A14  
A15  
E
15  
15  
20  
20  
[PWR DWN]  
[PWR DWN]  
&
&
22  
22  
EN  
EN  
G/V  
PP  
G/V  
PP  
These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.  
Pin numbers shown are for the J package.  
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)  
Supply voltage range, V  
Supply voltage range, V  
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 V to 7 V  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 V to 14 V  
CC  
PP  
Input voltage range (see Note 1): All inputs except A9 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 V to V  
+ 1 V  
CC  
A9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 V to 13.5 V  
Output voltage range (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 V to V + 1 V  
CC  
Operating free-air temperature range (’27C512-_ _JL, ’27PC512-_ _FML)T . . . . . . . . . . . . . . . 0°C to 70°C  
A
Operating free-air temperature range (’27C512-_ _JE, ’27PC512-_ _FME)T . . . . . . . . . . . . 40°C to 85°C  
A
Storage temperature range, T  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C  
stg  
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and  
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not  
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.  
NOTE 1: All voltage values are with respect to GND.  
6
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TMS27C512 65536 BY 8-BIT UV ERASABLE  
TMS27PC512 65536 BY 8-BIT  
PROGRAMMABLE READ-ONLY MEMORIES  
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997  
recommended operating conditions  
MIN  
4.5  
NOM  
5
MAX  
5.5  
UNIT  
Read mode (see Note 2)  
V
Supply voltage  
V
V
V
CC  
SNAP! Pulse programming algorithm  
6.25  
12.75  
2
6.5  
13  
6.75  
13.25  
G/V  
PP  
Supply voltage  
SNAP! Pulse programming algorithm  
TTL  
V
V
+1  
+1  
CC  
V
V
High-level dc input voltage  
IH  
CMOS  
TTL  
V
– 0.2  
CC  
– 0.5  
CC  
0.8  
0.2  
Low-level dc input voltage  
V
IL  
CMOS  
– 0.5  
Operating free-air  
temperature  
TMS27C512-_ _JL  
TMS27PC512-_ _FML  
T
0
70  
85  
°C  
°C  
A
Operating free-air  
temperature  
TMS27C512-_ _JE  
TMS27PC512-_ _FME  
T
A
– 40  
NOTE 2:  
V
must be applied before or at the same time as G/V  
PP  
and removed after or at the same time as G/V . The device must not be  
PP  
is applied.  
CC  
inserted into or removed from the board when V  
or V  
PP  
CC  
electrical characteristics over recommended ranges of supply voltage and operating free-air  
temperature  
TYP  
PARAMETER  
TEST CONDITIONS  
= – 2.5 mA  
MIN  
MAX  
UNIT  
I
I
I
I
3.5  
OH  
OH  
OL  
OL  
V
V
High-level dc output voltage  
V
OH  
= – 20 µA  
V
– 0.1  
CC  
= 2.1 mA  
0.4  
0.1  
±1  
Low-level dc output voltage  
V
OL  
= 20 µA  
I
I
I
Input current (leakage)  
Output current (leakage)  
V = 0 V to 5.5 V  
µA  
µA  
I
I
V
= 0 V to V  
O CC  
±1  
O
G/V  
PP  
supply current (during program pulse)  
TTL-input level  
G/V  
PP  
= 13 V  
35  
250  
100  
50  
mA  
PP  
V
V
V
= 5.5 V, . . . . . E = V  
= 5.5 V, . . . . . E = V  
500  
250  
CC  
CC  
IH  
I
V
supply current (standby)  
µA  
CC1  
CC2  
CC  
CC  
CMOS-input level  
CC  
= 5.5 V,  
IL  
= minimum cycle time,  
E = V ,  
CC  
I
V
supply current (active)  
t
15  
30  
mA  
cycle  
outputs open  
Typical values are at T = 25°C and nominal voltages.  
A
capacitance over recommended ranges of supply voltage and operating free-air  
temperature, f = 1 MHz  
PARAMETER  
Input capacitance  
Output capacitance  
G/V input capacitance  
TEST CONDITIONS  
MIN TYP  
MAX  
10  
UNIT  
pF  
C
C
C
V = 0 V,  
f = 1 MHz  
f = 1 MHz  
6
I
I
V
= 0 V,  
10  
20  
14  
pF  
O
O
G/V  
PP  
= 0 V, f = 1 MHz  
25  
pF  
G/VPP  
PP  
Capacitance measurements are made on a sample basis only.  
Typical values are at T = 25°C and nominal voltages.  
A
7
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TMS27C512 65536 BY 8-BIT UV ERASABLE  
TMS27PC512 65536 BY 8-BIT  
PROGRAMMABLE READ-ONLY MEMORIES  
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997  
switching characteristics over recommended ranges of operating conditions  
’27C512-10  
’27PC512-10  
’27C512-12  
’27PC512-12  
TEST CONDITIONS  
(SEE NOTES 3 AND 4)  
PARAMETER  
UNIT  
MIN  
MAX  
100  
100  
55  
MIN  
MAX  
120  
120  
55  
t
t
t
t
Access time from address  
Access time from chip enable  
Output enable time from G/V  
ns  
ns  
ns  
ns  
a(A)  
a(E)  
en(G)  
dis  
C
= 100 pF,  
L
1 Series 74 TTL Load,  
PP  
Input t 20 ns,  
r
OutputdisabletimefromG/V orE, whicheveroccursfirst  
PP  
0
0
45  
0
0
45  
Input t 20 ns  
f
Output data valid time after change of address, E, or G/V  
,
PP  
t
ns  
v(A)  
whichever occurs first  
’27C512-15  
’27PC512-15  
TEST CONDITIONS  
(SEE NOTES 3 AND 4)  
PARAMETER  
UNIT  
MIN  
MAX  
150  
150  
75  
t
t
t
t
Access time from address  
Access time from chip enable  
Output enable time from G/V  
ns  
ns  
ns  
ns  
a(A)  
a(E)  
en(G)  
dis  
C
= 100 pF,  
L
1 Series 74 TTL Load,  
PP  
Input t 20 ns,  
r
Output disable time from G/V  
PP  
or E, whichever occurs first  
0
0
60  
Input t 20 ns  
f
Output data valid time after change of address, E, or G/V , whichever  
PP  
t
ns  
v(A)  
occurs first  
’27C512-20  
’27PC512-20  
’27C512-25  
’27PC512-25  
TEST CONDITIONS  
(SEE NOTES 3 AND 4)  
PARAMETER  
UNIT  
MIN  
MAX  
200  
200  
75  
MIN  
MAX  
250  
250  
100  
60  
t
t
t
t
Access time from address  
Access time from chip enable  
Output enable time from G/V  
ns  
ns  
ns  
ns  
a(A)  
a(E)  
en(G)  
dis  
C
= 100 pF,  
L
1 Series 74 TTL Load,  
PP  
Input t 20 ns,  
r
OutputdisabletimefromG/V orE, whicheveroccursfirst  
PP  
0
0
60  
0
0
Input t 20 ns  
f
Output data valid time after change of address, E, or G/V  
,
PP  
t
ns  
v(A)  
whichever occurs first  
Value calculated from 0.5 V delta to measured output level. This parameter is only sampled.  
NOTES: 3. For all switching characteristics, the input pulse levels are 0.4 V to 2.4 V. Timing measurements are made at 2 V for logic high and  
0.8 V for logic low (see Figure 2).  
4. Common test conditions apply for t  
except during programming.  
dis  
switching characteristics for programming: V  
A
= 6.50 V and G/V  
= 13 V (SNAP! Pulse),  
CC  
PP  
T = 25°C (see Note 3)  
PARAMETER  
MIN  
MAX UNIT  
130 ns  
t
Disable time, output from G/V  
PP  
0
dis(G)  
NOTE 3: For all switching characteristics, the input pulse levels are 0.4 V to 2.4 V. Timing measurements are made at 2 V for logic high and  
0.8 V for logic low.  
8
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TMS27C512 65536 BY 8-BIT UV ERASABLE  
TMS27PC512 65536 BY 8-BIT  
PROGRAMMABLE READ-ONLY MEMORIES  
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997  
timing requirements for programming  
MIN NOM  
MAX  
UNIT  
µs  
µs  
µs  
µs  
µs  
µs  
µs  
µs  
µs  
µs  
ns  
t
t
t
t
t
t
t
t
t
t
t
Pulse duration, initial program  
Setup time, address  
95  
2
100  
105  
w(IPGM)  
su(A)  
Setup time, data  
2
su(D)  
Setup time, G/V  
PP  
2
su(VPP  
su(VCC)  
h(A)  
Setup time, V  
CC  
2
Hold time, address  
Hold time, data  
0
2
h(D)  
Hold time, G/V  
PP  
2
h(VPP)  
rec(PG)  
EHD  
Recovery time, G/V  
PP  
2
Data valid from E low  
Rise time, G/V  
1
50  
r(PG)G  
PP  
PARAMETER MEASUREMENT INFORMATION  
2.08 V  
R
= 800 Ω  
L
Output  
Under Test  
C
= 100 pF  
L
(see Note A)  
2.4 V  
2 V  
2 V  
0.8 V  
0.8 V  
0.4 V  
NOTES: A.  
C
includes probe and fixture capacitance.  
L
B. The ac testing inputs are driven at 2.4 V for logic high and 0.4 V for logic low. Timing  
measurements are made at 2 V for logic high and 0.8 V for logic low for both inputs  
and outputs.  
Figure 2. AC Testing Output Load Circuit  
9
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TMS27C512 65536 BY 8-BIT UV ERASABLE  
TMS27PC512 65536 BY 8-BIT  
PROGRAMMABLE READ-ONLY MEMORIES  
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997  
PARAMETER MEASUREMENT INFORMATION  
V
V
IH  
A0A15  
Addresses Valid  
IL  
t
a(A)  
V
V
IH  
E
IL  
t
a(E)  
V
V
IH  
G/V  
PP  
IL  
t
dis  
t
en(G)  
t
v(A)  
V
V
OH  
DQ0DQ7  
Hi-Z  
Output Valid  
Hi-Z  
OL  
Figure 3. Read-Cycle Timing  
V
IH  
A0A15  
Address Stable  
V
IL  
t
t
su(A)  
h(A)  
V
V
V
IH/ OH  
DQ0DQ7  
Data-In Stable  
Hi-Z  
Data-Out Valid  
V
IL/ OL  
t
t
dis(G)  
su(D)  
t
h(D)  
V
V
PP  
t
EHD  
G/V  
PP  
t
h(VPP)  
IL  
t
su(VPP)  
r(PG)G  
t
t
rec(PG)  
V
V
IH  
E
t
su(VCC)  
IL  
t
w(IPGM)  
V
V
CC  
V
CC  
CC  
t
is a characteristic of the device but must be accommodated by the programmer.  
dis(G)  
13-V G/V  
and 6.5-V V  
for SNAP! Pulse programming.  
CC  
PP  
Figure 4. Program-Cycle Timing (SNAP! Pulse Programming)  
10  
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TMS27C512 65536 BY 8-BIT UV ERASABLE  
TMS27PC512 65536 BY 8-BIT  
PROGRAMMABLE READ-ONLY MEMORIES  
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997  
FM (R-PQCC-J32)  
PLASTIC J-LEADED CHIP CARRIER  
Seating Plane  
0.004 (0,10)  
0.140 (3,56)  
0.132 (3,35)  
0.129 (3,28)  
0.495 (12,57)  
0.485 (12,32)  
0.123 (3,12)  
0.453 (11,51)  
0.447 (11,35)  
0.049 (1,24)  
0.043 (1,09)  
0.008 (0,20) NOM  
1
30  
4
29  
5
0.020 (0,51)  
0.015 (0,38)  
0.595 (15,11)  
0.585 (14,86)  
0.553 (14,05)  
0.547 (13,89)  
0.030 (0,76)  
TYP  
21  
13  
14  
20  
0.050 (1,27)  
4040201-4/B 03/95  
NOTES: A. All linear dimensions are in inches (millimeters).  
B. This drawing is subject to change without notice.  
C. Falls within JEDEC MS-016  
11  
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
TMS27C512 65536 BY 8-BIT UV ERASABLE  
TMS27PC512 65536 BY 8-BIT  
PROGRAMMABLE READ-ONLY MEMORIES  
SMLS512G – NOVEMBER 1985 – REVISED SEPTEMBER 1997  
J (R-CDIP-T**)  
CERAMIC SIDE-BRAZE DUAL-IN-LINE PACKAGE  
24 PIN SHOWN  
B
13  
24  
C
12  
1
Lens Protrusion  
0.010 (0,25) MAX  
0.065 (1,65)  
0.045 (1,14)  
0.090 (2,29)  
0.060 (1,53)  
0.175 (4,45)  
A
0.140 (3,56)  
0.018 (0,46) MIN  
Seating Plane  
0°10°  
0.125 (3,18) MIN  
0.022 (0,56)  
0.014 (0,36)  
0.100 (2,54)  
0.012 (0,30)  
0.008 (0,20)  
PINS**  
24  
28  
32  
40  
DIM  
NARR  
WIDE  
NARR  
WIDE  
NARR  
WIDE  
NARR  
WIDE  
0.624(15,85) 0.624(15,85) 0.624(15,85) 0.624(15,85) 0.624(15,85) 0.624(15,85) 0.624(15,85) 0.624(15,85)  
0.590(14,99) 0.590(14,99) 0.590(14,99) 0.590(14,99) 0.590(14,99) 0.590(14,99) 0.590(14,99) 0.590(14,99)  
1.265(32,13) 1.265(32,13) 1.465(37,21) 1.465(37,21) 1.668(42,37) 1.668(42,37) 2.068(52,53) 2.068(52,53)  
1.235(31,37) 1.235(31,37) 1.435(36,45) 1.435(36,45) 1.632(41,45) 1.632(41,45) 2.032(51,61) 2.032(51,61)  
0.541(13,74) 0.598(15,19) 0.541(13,74) 0.598(15,19) 0.541(13,74) 0.598(15,19) 0.541(13,74) 0.598(15,19)  
0.514(13,06) 0.571(14,50) 0.514(13,06) 0.571(14,50) 0.514(13,06) 0.571(14,50) 0.514(13,06) 0.571(14,50)  
MAX  
MIN  
MAX  
MIN  
MAX  
MIN  
A
B
C
4040084/B 04/95  
NOTES: A. All linear dimensions are in inches (millimeters).  
B. This drawing is subject to change without notice.  
C. This package can be hermetically sealed with a ceramic lid using glass frit.  
D. Index point is provided on cap for terminal identification only on press ceramic glass frit seal only.  
12  
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443  
IMPORTANT NOTICE  
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue  
any product or service without notice, and advise customers to obtain the latest version of relevant information  
to verify, before placing orders, that information being relied on is current and complete. All products are sold  
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those  
pertaining to warranty, patent infringement, and limitation of liability.  
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in  
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent  
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily  
performed, except those mandated by government requirements.  
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF  
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL  
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR  
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER  
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO  
BE FULLY AT THE CUSTOMER’S RISK.  
In order to minimize risks associated with the customer’s applications, adequate design and operating  
safeguards must be provided by the customer to minimize inherent or procedural hazards.  
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent  
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other  
intellectual property right of TI covering or relating to any combination, machine, or process in which such  
semiconductor products or services might be or are used. TI’s publication of information regarding any third  
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.  
Copyright 1998, Texas Instruments Incorporated  

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