HT27C010(32SOP) [HOLTEK]

Memory IC;
HT27C010(32SOP)
型号: HT27C010(32SOP)
厂家: HOLTEK SEMICONDUCTOR INC    HOLTEK SEMICONDUCTOR INC
描述:

Memory IC

文件: 总14页 (文件大小:134K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
HT27C010  
CMOS 128K´8-Bit OTP EPROM  
Features  
·
·
Operating voltage: +5.0V  
128K´8-bit organization  
·
·
Programming voltage  
Fast read access time: 70ns  
-
·
VPP=12.5V±0.2V  
Fast programming algorithm  
-
VCC=6.0V±0.2V  
·
Programming time 75ms typ.  
·
High-reliability CMOS technology  
·
Two line controls (OE and CE)  
·
Latch-up immunity to 100mA from -1.0V to  
CC+1.0V  
·
·
·
Standard product identification code  
Commercial temperature range (0°C to +70°C)  
32-pin DIP/SOP/PLCC package  
V
·
·
CMOS and TTL compatible I/O  
Low power consumption  
-
Active: 30mA max.  
-
Standby: 1mA typ.  
General Description  
The HT27C010 chip family is a low-power, 1024K  
(1,048,576) bit, +5V electrically one-time programmable  
(OTP) read-only memories (EPROM). Organized into  
128K words with 8 bits per word, it features a fast single  
address location programming, typically at 75ms per  
byte. Any byte can be accessed in less than 70ns with  
respect to Spec. This eliminates the need for WAIT  
states in high-performance microprocessor systems.  
The HT27C010 has separate Output Enable (OE) and  
Chip Enable (CE) controls which eliminate bus conten-  
tion issues.  
Block Diagram  
R
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X
-
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Rev. 1.20  
1
December 5, 2003  
HT27C010  
Pin Assignment  
V
P
P
1
2
3
4
5
6
7
8
9
1
1
1
1
1
1
1
3
3
3
2
2
2
2
2
2
2
2
2
2
1
1
1
2
1
0
9
8
7
6
5
4
3
2
1
0
9
8
7
V
P
N
A
A
A
A
A
O
A
C
D
D
D
D
D
C
G
C
A
A
A
1
1
1
6
M
5
C
2
7
6
5
4
3
2
1
0
0
1
2
1
1
8
9
1
4
3
A
A
A
A
A
A
A
A
2
2
2
2
2
2
2
2
2
9
8
7
6
5
4
3
2
1
A
A
A
A
A
A
A
A
7
6
5
4
3
2
1
0
0
5
A
1
4
6
7
8
9
A
1
3
A
A
A
8
9
1
1
H
T
2
7
C
0
1
0
1
0
E
3
2
P
L
C
C
-
A
1
1
1
1
0
1
2
3
O
A
C
D
E
0
1
2
3
4
5
6
1
0
1
E
Q
Q
Q
Q
Q
E
D
Q
Q
7
7
6
5
4
3
D
D
D
Q
Q
Q
S
V
S
H
T
2
7
C
0
1
0
3
2
D
I
P
-
A
/
S
O
P
-
A
Pin Description  
Pin Name  
A0~A16  
DQ0~DQ7  
CE  
I/O/C/P  
Description  
I
I/O  
C
C
C
¾
P
I
Address inputs  
Data inputs/outputs  
Chip enable  
OE  
Output enable  
PGM  
Program strobe  
No connection  
NC  
VPP  
Program voltage supply  
Positive power supply  
VCC  
VSS  
I
Negative power supply, ground  
Rev. 1.20  
2
December 5, 2003  
HT27C010  
Absolute Maximum Rating  
Operation Temperature Commercial..........................................................................................................0°C to +70°C  
Storage Temperature.............................................................................................................................-65°C to 125 °C  
Applied VCC Voltage with Respect to VSS ................................................................................................-0.6V to 7.0V  
Applied Voltage on Input Pin with Respect to VSS..................................................................................... -0.6V to 7.0V  
Applied Voltage on Output Pin with Respect to VSS ..........................................................................-0.6V to VCC+0.5V  
Applied Voltage on A9 Pin with Respect to VSS.......................................................................................-0.6V to 13.5V  
Applied VPP Voltage with Respect to VSS...............................................................................................-0.6V to 13.5V  
Applied READ Voltage (Functionality is guaranteed between these limits) ..............................................+4.5V to +5.5V  
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may  
cause substantial damage to the device. Functional operation of this device at other conditions beyond those  
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-  
ity.  
D.C. Characteristics  
Test Conditions  
Symbol  
Parameter  
Min.  
Typ.  
Max.  
Unit  
VCC  
Conditions  
Read operation  
VOH  
VOL  
VIH  
VIL  
Output High Level  
5V  
5V  
5V  
5V  
5V  
5V  
5V  
5V  
5V  
5V  
2.4  
¾
V
V
IOH=-0.4mA  
IOL=2.1mA  
¾
¾
¾
¾
¾
¾
¾
1.0  
¾
¾
¾
0.45  
VCC+0.5  
0.8  
Output Low Level  
Input High Level  
2.0  
-0.3  
-5  
V
¾
¾
Input Low Level  
V
ILI  
VIN=0 to 5.5V  
Input Leakage Current  
Output Leakage Current  
VCC Active Current  
Standby Current (CMOS)  
Standby Current (TTL)  
VPP Read/Standby Current  
5
mA  
mA  
mA  
mA  
mA  
mA  
ILO  
VOUT=0 to 5.5V  
CE=VIL, f=5MHz, IOUT=0mA  
CE=VCC±0.3V  
10  
-10  
¾
ICC  
ISB1  
ISB2  
IPP  
30  
10  
¾
CE=VIH  
1.0  
¾
CE=OE=VIL, VPP=VCC  
100  
¾
Programming operation  
VOH  
VOL  
VIH  
VIL  
ILI  
Output High Level  
Output Low Level  
Input High Level  
6V  
6V  
6V  
6V  
6V  
6V  
6V  
6V  
2.4  
V
V
IOH=-0.4mA  
¾
¾
¾
¾
¾
¾
¾
¾
¾
IOL=2.1mA  
0.45  
¾
0.7VCC  
V
CC+0.5  
V
¾
¾
Input Low Level  
0.8  
V
-0.5  
¾
VIN=VIL, VIH  
Input Load Current  
A9 Product ID Voltage  
VCC Supply Current  
VPP Supply Current  
5.0  
mA  
V
VH  
11.5  
¾
12.5  
40  
¾
ICC  
IPP  
Capacitance  
mA  
mA  
¾
CE=VIL  
10  
¾
CIN  
VIN=0V  
Input Capacitance  
Output Capacitance  
VPP Capacitance  
5V  
5V  
5V  
8
8
12  
12  
25  
pF  
pF  
pF  
¾
¾
¾
COUT  
CVPP  
VOUT=0V  
VPP=0V  
18  
Rev. 1.20  
3
December 5, 2003  
HT27C010  
A.C. Characteristics  
Ta=+25°C±5°C  
Test Conditions  
Symbol  
Parameter  
Min.  
Typ.  
Max.  
Unit  
VCC  
Conditions  
Read Operation  
tACC  
tCE  
CE=OE=VIL  
OE=VIL  
Address to Output Delay  
5V  
5V  
5V  
70  
70  
30  
ns  
ns  
ns  
¾
¾
¾
Chip Enable to Output Delay  
Output Enable to Output Delay  
tOE  
CE=VIL  
CE or OE High to Output Float, Whichever  
Occurred First  
tDF  
5V  
5V  
25  
ns  
ns  
¾
¾
¾
Output Hold from Address, CE or OE,  
Whichever Occurred First  
tOH  
0
¾
Programming Operation  
tAS  
Address Setup Time  
OE Setup Time  
6V  
6V  
6V  
6V  
6V  
6V  
6V  
6V  
6V  
6V  
6V  
6V  
2
2
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
75  
¾
¾
¾
¾
¾
¾
ms  
ms  
ms  
ms  
ms  
ns  
ms  
ms  
ms  
ms  
ns  
ms  
tOES  
tDS  
Data Setup Time  
2
¾
tAH  
Address Hold Time  
0
¾
tDH  
Data Hold Time  
2
¾
tDFP  
tVPS  
tPW  
tVCS  
tCES  
tOE  
Output Enable to Output Float Delay  
VPP Setup Time  
0
130  
¾
2
PGM Program Pulse Width  
VCC Setup Time  
30  
2
105  
¾
CE Setup Time  
2
¾
Data Valid from OE  
150  
¾
¾
2
tPRT  
VPP Pulse Rise Time During Programming  
Test waveforms and Measurements  
Output Test Load  
2
.
4
V
V
D D  
2
.
0
V
A
M
L
C
1
.
3
V
A
C
D
r
i
v
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g
e
a
s
u
r
e
m
e
n
t
L
e
v
e
l
s
e
v
e
l
0
.
8
V
(
1
N
9
1
4
)
0
.
4
5
V
3
.
3
k
tR, tF< 20ns (10% to 90%)  
O
u
t
p
u
t
P
i
n
C
L
Note: CL=100pF including jig capacitance, except for  
the -45 devices, where CL=30pF.  
Rev. 1.20  
4
December 5, 2003  
HT27C010  
Functional Description  
Programming of the HT27C010  
To activate this mode, the programming equipment  
must force 12.0±0.5V on the address line A9 of the  
HT27C010. Two identifier bytes may then be se-  
quenced from the device outputs by toggling address  
line A0 from VIL to VIH, when A1=VIH. All other address  
lines must be held at VIH during Auto Product Identification  
mode.  
When the HT27C010 is delivered, the chip has all  
1024K bits in the ²ONE², or HIGH state. ²ZEROs² are  
loaded into the HT27C010 through programming.  
The programming mode is entered when 12.5±0.2V is ap-  
plied to the VPP pin, OE is at VIH, and CE and PGM are  
VIL. For programming, the data to be programmed is ap-  
plied with 8 bits in parallel to the data pins.  
Byte 0 (A0=VIL) represents the manufacturer code, and  
byte 1 (A0=VIH), the device code. For HT27C010, these  
two identifier bytes are given in the Operation mode truth  
table. All identifiers for the manufacturer and device codes  
will possess odd parity, with the MSB (DQ7) defined as the  
parity bit. When A1=VIL, the HT27C010 will read out the bi-  
nary code of 7F, continuation code, to signify the unavail-  
ability of manufacturer ID codes.  
The programming flowchart in Figure 3 shows the fast  
interactive programming algorithm. The interactive al-  
gorithm reduces programming time by using 30ms to  
105ms programming pulses and giving each address  
only as many pulses as is necessary in order to reliably  
program the data. After each pulse is applied to a given  
address, the data in that address is verified. If the data  
is not verified, additional pulses are given until it is veri-  
fied or until the maximum number of pulses is reached  
while sequencing through each address of the  
HT27C010. This process is repeated while sequencing  
through each address of the HT27C010. This part of  
the programming algorithm is done at VCC=6.0V to as-  
sure that each EPROM bit is programmed to a suffi-  
ciently high threshold voltage. This ensures that all bits  
have sufficient margin. After the final address is com-  
pleted, the entire EPROM memory is read at  
Read Mode  
The HT27C010 has two control functions, both of which  
must be logically satisfied in order to obtain data at out-  
puts. Chip Enable (CE) is the power control and should  
be used for device selection. Output Enable (OE) is the  
output control and should be used to gate data to the  
output pins, independent of device selection. Assuming  
that addresses are stable, address access time (tACC) is  
equal to the delay from CE to output (tCE). Data is avail-  
able at the outputs (tOE) after the falling edge of OE, as-  
suming the CE has been LOW and addresses have  
VCC=VPP=5.25±0.25V to verify the entire memory.  
been stable for at least tACC-tOE  
.
Program Inhibit Mode  
Standby Mode  
Programming of multiple HT27C010 in parallel with dif-  
ferent data is also easily accomplished by using the Pro-  
gram Inhibit Mode. Except for CE, all like inputs of the  
parallel HT27C010 may be common. A TTL low-level  
program pulse applied to an HT27C010 CE input with  
The HT27C010 has CMOS standby mode which re-  
duces the maximum VCC current to 10mA. It is placed in  
CMOS standby when CE is at VCC±0.3V. The  
HT27C010 also has a TTL-standby mode which re-  
duces the maximum VCC current to 1.0mA. It is placed  
in TTL-standby when CE is at VIH. When in standby  
mode, the outputs are in a high-impedance state, inde-  
pendent of the OE input.  
VPP=12.5±0.2V, PGM LOW, and OE HIGH will program  
that HT27C010. A high-level CE input inhibits the  
HT27C010 from being programmed.  
Program Verify Mode  
Verification should be performed on the programmed  
bits to determine whether they were correctly pro-  
grammed. The verification should be performed with OE  
and CE at VIL, PGM at VIH, and VPP at its programming  
voltage.  
Two-line Output Control Function  
To accommodate multiple memory connections, a  
two-line control function is provided to allow for:  
·
Low memory power dissipation  
·
Assurance that output bus contention will not occur  
Auto Product Identification  
It is recommended that CE be decoded and used as the  
primary device-selection function, while OE be made a  
common connection to the READ line from the system  
control bus. This assures that all deselected memory  
devices are in their low-power standby mode and that  
the output pins are only active when data is desired from  
a particular memory device.  
The Auto Product Identification mode allows the reading  
out of a binary code from an EPROM that will identify its  
manufacturer and the type. This mode is intended for  
programming to automatically match the device to be  
programmed with its corresponding programming algo-  
rithm. This mode is functional in the 25°C±5°C ambient  
temperature range that is required when programming  
the HT27C010.  
Rev. 1.20  
5
December 5, 2003  
HT27C010  
System Considerations  
VCC and VPP to minimize transient effects. In addition,  
to overcome the voltage drop caused by the inductive  
effects of the printed circuit board traces on EPROM ar-  
rays, a 4.7mF bulk electrolytic capacitor should be used  
between VCC and VPP for each eight devices. The lo-  
cation of the capacitor should be close to where the  
power supply is connected to the array.  
During the switch between active and standby condi-  
tions, transient current peaks are produced on the rising  
and falling edges of Chip Enable. The magnitude of  
these transient current peaks is dependent on the out-  
put capacitance loading of the device. At a minimum, a  
0.1mF ceramic capacitor (high frequency, low inherent  
inductance) should be used on each device between  
Operation Mode Truth Table  
All the operation modes are shown in the table following.  
Mode  
CE  
VIL  
OE  
VIL  
VIH  
X
PGM  
X (2)  
X
A0  
X
A1  
X
A9  
VPP  
VCC  
VCC  
VCC  
VCC  
VPP  
VPP  
VPP  
VCC  
VCC  
Output  
Dout  
Read  
X
Output Disable  
Standby (TTL)  
VIL  
X
X
X
High Z  
High Z  
High Z  
DIN  
VIH  
X
X
X
X
X
Standby (CMOS)  
Program  
VCC± 0.3V  
VIL  
X
X
X
X
VIH  
VIL  
X
VIL  
VIH  
X
X
X
X
Program Verify  
Product Inhibit  
VIL  
X
X
X
DOUT  
High Z  
1C  
VIH  
X
X
X
Manufacturer Code (3)  
Device Type Code (3)  
VIL  
VIL  
VIL  
X
VIL  
VIH  
VIH  
VIH  
VH (1)  
VH (1)  
VIL  
X
01  
Note:  
(1) VH=12.0V ± 0.5V  
(2) X=Either VIH or VIL  
(3) For Manufacturer Code and Device Code, A1=VIH, When A1=VIL, both codes will read 7F  
Product Identification Code  
Pins  
Hex  
Data  
Code  
A0  
0
A1  
1
DQ7  
DQ6  
DQ5  
DQ4  
DQ3  
DQ2  
DQ1  
DQ0  
Manufacturer  
Device Type  
0
0
0
0
0
0
1
1
0
0
1
1
1
0
1
1
1
0
1
1
1
0
1
1
0
0
1
1
0
1
1
1
1C  
01  
7F  
7F  
1
1
0
0
Continuation  
1
0
A
d
d
r
e
s
s
V
a
l
i
d
A
d
d
r
e
s
s
t
C E  
C
E
t
D <  
t
O E  
O
E
t
A C C  
t
O H  
O
u
t
p
u
t
V
a
l
i
d
O
u
t
p
u
t
H
I
G
H
Z
Figure 1. A.C. Waveforms for Read Operation  
Rev. 1.20  
6
December 5, 2003  
HT27C010  
R
e
a
d
P
r
o
g
r
a
m
(
V
e
r
i
f
y
)
V
I
H
A
d
d
r
e
s
s
S
t
a
b
l
e
A
d
d
r
e
s
s
V
I
L
t
A
S
t
O
E
t
A H  
V
I
H
D
a
t
a
O
u
t
D
a
t
a
I
n
D
a
t
a
V
a
l
i
d
V
I
L
t
D
S
t
D H  
6
5
.
.
0
0
V
V
V
C
C
t
D < P  
t
V C S  
1
2
5
.
.
5
0
V
t
V P S  
V
P
P
V
t
P R T  
V
I
H
C
E
V
I
L
t
C E S  
V
I
H
P
G
M
V
I
L
t
O E S  
t
P W  
V
I
H
O
E
V
I
L
Figure 2. Programming Waveforms  
S
T
A
R
T
A
d
d
r
e
s
s
=
<
i
r
s
t
L
o
c
a
t
i
o
n
V
C
C
V
P
P
=
1
2
.
5
V
X
=
0
P
r
o
g
r
a
m
o
n
e
7
5
m
s
P
u
l
s
e
I
n
t
e
r
a
c
t
i
v
e
S
e
c
t
i
o
n
I
n
c
r
e
m
e
n
t
X
Y
e
s
X
=
2
5
?
N
o
<
a
i
l
V
e
r
i
f
y
B
y
t
e
?
P
a
s
s
N
o
L
a
s
t
<
a
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l
I
n
c
r
e
m
e
n
t
A
d
d
r
e
s
s
A
d
d
r
e
s
s
Y
e
s
V
C
C
=
V
P
P
=
5
.
2
5
V
V
e
r
i
f
y
S
e
c
t
i
o
n
<
a
i
l
V
e
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e
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a
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B
y
t
e
s
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P
a
s
s
D
e
v
i
c
e
P
a
s
s
e
d
N
m
m
Figure 3. Fast Programming Flowchart  
Rev. 1.20  
7
December 5, 2003  
HT27C010  
Package Information  
32-pin DIP (600mil) Outline Dimensions  
A
3
2
1
7
B
1
1
6
H
C
D
I
a
E
<
G
Dimensions in mil  
Nom.  
Symbol  
Min.  
1635  
535  
145  
125  
16  
Max.  
1665  
555  
155  
145  
20  
A
B
C
D
E
F
G
H
I
¾
¾
¾
¾
¾
50  
70  
¾
100  
¾
¾
¾
595  
635  
0°  
615  
670  
15°  
¾
a
¾
Rev. 1.20  
8
December 5, 2003  
HT27C010  
32-pin SOP (450mil) Outline Dimensions  
3
2
1
7
A
B
1
1
6
C
C
'
G
H
D
a
E
<
Dimensions in mil  
Nom.  
Symbol  
Min.  
543  
440  
14  
¾
Max.  
557  
450  
20  
A
B
C
C¢  
D
E
F
¾
¾
¾
¾
¾
50  
¾
¾
¾
¾
817  
112  
¾
100  
¾
4
¾
G
H
a
32  
4
38  
12  
0°  
10°  
Rev. 1.20  
9
December 5, 2003  
HT27C010  
32-pin PLCC Outline Dimensions  
A
B
4
1
3
2
3
0
5
2
9
D
C
1
3
2
1
1
4
2
0
K
E
<
J
G
H
I
Dimensions in mil  
Nom.  
Symbol  
Min.  
485  
445  
585  
545  
105  
¾
Max.  
495  
455  
595  
555  
115  
140  
¾
A
B
C
D
E
F
G
H
I
¾
¾
¾
¾
¾
¾
¾
50  
¾
¾
¾
¾
15  
¾
¾
16  
22  
J
24  
32  
K
a
8
12  
0°  
10°  
Rev. 1.20  
10  
December 5, 2003  
HT27C010  
Product Tape and Reel Specifications  
Reel Dimensions  
D
T
2
C
A
B
T
1
SOP 32W  
Symbol  
Description  
Dimensions in mm  
A
B
Reel Outer Diameter  
Reel Inner Diameter  
330±1.0  
100±0.1  
13.0+0.5  
-0.2  
C
D
Spindle Hole Diameter  
Key Slit Width  
2.0±0.5  
32.8+0.3  
-0.2  
T1  
T2  
Space Between Flange  
Reel Thickness  
38.2+0.2  
PLCC 32  
Symbol  
Description  
Dimensions in mm  
330±1.0  
A
B
Reel Outer Diameter  
Reel Inner Diameter  
62±1.5  
13.0+0.5  
-0.2  
C
D
Spindle Hole Diameter  
Key Slit Width  
2.0±0.5  
24.8+0.3  
-0.2  
T1  
T2  
Space Between Flange  
Reel Thickness  
30.2±0.2  
Rev. 1.20  
11  
December 5, 2003  
HT27C010  
Carrier Tape Dimensions  
P
0
P
1
t
D
E
<
B
0
W
C
K
1
D
1
P
K
2
A
0
SOP 32W  
Symbol  
Description  
Dimensions in mm  
32.0+0.3  
-0.1  
W
Carrier Tape Width  
P
E
Cavity Pitch  
16.0±0.1  
1.75±0.1  
14.2±0.1  
1.55+0.1  
2.0+0.25  
4.0±0.1  
2.0±0.1  
14.7±0.1  
20.9±0.1  
3.0±0.1  
3.4±0.1  
0.35±0.05  
25.5  
Perforation Position  
F
Cavity to Perforation (Width Direction)  
Perforation Diameter  
Cavity Hole Diameter  
Perforation Pitch  
D
D1  
P0  
P1  
A0  
B0  
K1  
K2  
t
Cavity to Perforation (Length Direction)  
Cavity Length  
Cavity Width  
Cavity Depth  
Cavity Depth  
Carrier Tape Thickness  
Cover Tape Width  
C
Rev. 1.20  
12  
December 5, 2003  
HT27C010  
P
0
P
1
t
D
E
<
W
B
0
C
D
1
P
K
0
A
0
PLCC 32  
Symbol  
Description  
Dimensions in mm  
24.0±0.3  
W
P
E
F
Carrier Tape Width  
Cavity Pitch  
18.0±0.1  
Perforation Position  
1.75±0.1  
Cavity to Perforation (Width Direction)  
Perforation Diameter  
11.5±0.1  
D
1.5+0.1  
1.55+1.0  
D1  
Cavity Hole Diameter  
-0.05  
P0  
P1  
A0  
B0  
K0  
t
Perforation Pitch  
4.0±0.1  
2.0±0.1  
13.1±0.1  
15.5±0.1  
3.9±0.1  
0.30±0.05  
21.3  
Cavity to Perforation (Length Direction)  
Cavity Length  
Cavity Width  
Cavity Depth  
Carrier Tape Thickness  
Cover Tape Width  
C
Rev. 1.20  
13  
December 5, 2003  
HT27C010  
Holtek Semiconductor Inc. (Headquarters)  
No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan  
Tel: 886-3-563-1999  
Fax: 886-3-563-1189  
http://www.holtek.com.tw  
Holtek Semiconductor Inc. (Sales Office)  
4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan  
Tel: 886-2-2655-7070  
Fax: 886-2-2655-7373  
Fax: 886-2-2655-7383 (International sales hotline)  
Holtek Semiconductor (Shanghai) Inc.  
7th Floor, Building 2, No.889, Yi Shan Rd., Shanghai, China  
Tel: 021-6485-5560  
Fax: 021-6485-0313  
http://www.holtek.com.cn  
Holtek Semiconductor (Hong Kong) Ltd.  
Block A, 3/F, Tin On Industrial Building, 777-779 Cheung Sha Wan Rd., Kowloon, Hong Kong  
Tel: 852-2-745-8288  
Fax: 852-2-742-8657  
Holmate Semiconductor, Inc.  
46712 Fremont Blvd., Fremont, CA 94538  
Tel: 510-252-9880  
Fax: 510-252-9885  
http://www.holmate.com  
Copyright Ó 2003 by HOLTEK SEMICONDUCTOR INC.  
The information appearing in this Data Sheet is believed to be accurate at the time of publication. However, Holtek as-  
sumes no responsibility arising from the use of the specifications described. The applications mentioned herein are used  
solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable  
without further modification, nor recommends the use of its products for application that may present a risk to human life  
due to malfunction or otherwise. Holtek¢s products are not authorized for use as critical components in life support devices  
or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information,  
please visit our web site at http://www.holtek.com.tw.  
Rev. 1.20  
14  
December 5, 2003  

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