M27C64A-20K6 [STMICROELECTRONICS]
64 Kbit (8Kb x8) UV EPROM and OTP EPROM; 64千位（8KB ×8 ） UV EPROM和OTP EPROM
| 型号： | M27C64A-20K6 |
| 厂家： | 
ST |
| 描述： | 64 Kbit (8Kb x8) UV EPROM and OTP EPROM |
| 文件： | 总22页 (文件大小：182K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
M27C64A
64 Kbit (8Kb x8) UV EPROM and OTP EPROM
Feature summary
■ 5V ± 10% supply voltage in Read operation
■ Access time: 100ns
■ Low power “CMOS” consumption:
– Active Current 30mA
28
– Standby Current 100µA
■ Programming voltage: 12.5V ± 0.25V
1
■ High speed programming
(less than 1 minute)
FDIP28W (F)
■ Electronic signature
– Manufacturer Code: 9Bh
– Device Code: 08h
■ ECOPACK® packages available
PLCC32 (K)
April 2006
Rev 3
1/22
www.st.com
1
Contents
M27C64A
Contents
1
2
Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Device operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
Read mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Two Line output control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
System considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
High-speed programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Program Inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Program Verify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Electronic Signature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.10 Erasure operation (applies to UV EPROMs) . . . . . . . . . . . . . . . . . . . . . . 10
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3
4
5
6
7
2/22
M27C64A
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Signal Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Electronic Signature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
AC Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Read Mode DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Programming Mode DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Read Mode AC Characteristics 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Read Mode AC Characteristics 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Programming Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
FDIP28W - 28 pin Ceramic Frit-seal DIP, with window, Package Mechanical Data. . . . . . 18
PLCC32 - 32 lead Plastic Leaded Chip Carrier, mechanical data . . . . . . . . . . . . . . . . . . . 19
Ordering Information Scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3/22
List of figures
M27C64A
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Logic Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
DIP Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Programming Flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
AC Testing Input Output Waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
AC Testing Load Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Read Mode AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Programming and Verify Modes AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
FDIP28W - 28 pin Ceramic Frit-seal DIP, with window, Package Outline . . . . . . . . . . . . . 18
Figure 10. PLCC32 - 32 lead Plastic Leaded Chip Carrier, Package Outline . . . . . . . . . . . . . . . . . . . 19
4/22
M27C64A
Summary description
1
Summary description
The M27C64A is a 64Kbit EPROM offered in the two ranges UV (ultra violet erase) and OTP
(one time programmable). It is ideally suited for microprocessor systems requiring large
programs and is organized as 8,192 by 8 bits.
The FDIP28W (window ceramic frit-seal package) has transparent lid which allows the user
to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be
written to the device by following the programming procedure.
For applications where the content is programmed only on time and erasure is not required,
the M27C64A is offered in PLCC32 package.
In order to meet environmental requirements, ST offers the M27C64A in ECOPACK®
packages.
ECOPACK packages are Lead-free. The category of second Level Interconnect is marked
on the package and on the inner box label, in compliance with JEDEC Standard JESD97.
The maximum ratings related to soldering conditions are also marked on the inner box label.
ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
5/22
Summary description
Figure 1.
M27C64A
Logic Diagram
V
V
PP
CC
13
8
A0-A12
Q0-Q7
P
E
M27C64A
G
V
SS
AI00834B
Table 1.
Signal Names
A0-A12
Address Inputs
Data Outputs
Chip Enable
Output Enable
Program
Q0-Q7
E
G
P
VPP
VCC
VSS
NC
DU
Program Supply
Supply Voltage
Ground
Not Connected Internally
Don’t Use
6/22
M27C64A
Summary description
Figure 2.
DIP Connections
V
1
2
3
4
5
6
7
8
9
28
27
V
P
PP
CC
A12
A7
A6
A5
A4
A3
A2
A1
26 NC
25 A8
24 A9
23 A11
22
G
M27C64A
21 A10
20
E
A0 10
Q0 11
Q1 12
Q2 13
19 Q7
18 Q6
17 Q5
16 Q4
15 Q3
V
14
SS
AI00835
Figure 3.
Pin Connections
1 32
M27C64A
17
A6
A8
A9
A11
NC
G
A5
A4
A3
A2
A1
A0
NC
Q0
9
25
A10
E
Q7
Q6
AI00836
7/22
Device operation
M27C64A
2
Device operation
The modes of operation of the M27C64A are listed in the Operating Modes table. A single
power supply is required in the read mode. All inputs are TTL levels except for VPP and 12V
on A9 for Electronic Signature.
2.1
Read mode
The M27C64A has two control functions, both of which must be logically active in order to
obtain data at the outputs. Chip Enable (E) is the power control and should be used for
device selection. Output Enable (G) is the output control and should be used to gate data to
the output pins, independent of device selection. Assuming that the addresses are stable,
the address access time (tAVQV) is equal to the delay from E to output (tELQV). Data is
available at the output after a delay of tGLQV from the falling edge of G, assuming that E has
been low and the addresses have been stable for at least tAVQV-tGLQV
.
2.2
2.3
Standby mode
The M27C64A has a standby mode which reduces the active current from 30mA to 100µA.
The M27C64A is placed in the standby mode by applying a CMOS high signal to the E input.
When in the standby mode, the outputs are in a high impedance state, independent of the G
input.
Two Line output control
Because EPROMs are usually used in larger memory arrays, this product features a 2 line
control function which accommodates the use of multiple memory connection. The two line
control function allows:
■
■
The lowest possible memory power dissipation
Complete assurance that output bus contention will not occur
For the most efficient use of these two control lines, E should be decoded and used as the
primary device selecting function, while G should be made a common connection to all
devices in the array and connected to the READ line from the system control bus. This
ensures that all deselected memory devices are in their low power standby mode and that
the output pins are only active when data is required from a particular memory device.
2.4
System considerations
The power switching characteristics of Advanced CMOS EPROMs require careful
decoupling of the devices. The supply current, ICC, has three segments that are of interest to
the system designer: the standby current level, the active current level, and transient current
peaks that are produced by the falling and rising edges of E. The magnitude of the transient
current peaks is dependent on the capacitive and inductive loading of the device at the
output. The associated transient voltage peaks can be suppressed by complying with the
two line output control and by properly selected decoupling capacitors. It is recommended
that a 0.1µF ceramic capacitor be used on every device between VCC and VSS. This should
8/22
M27C64A
Device operation
be a high frequency capacitor of low inherent inductance and should be placed as close to
the device as possible. In addition, a 4.7µF bulk electrolytic capacitor should be used
between VCC and VSS for every eight devices. The bulk capacitor should be located near the
power supply connection point. The purpose of the bulk capacitor is to overcome the voltage
drop caused by the inductive effects of PCB traces.
2.5
Programming
When delivered (and after each erasure for UV EPROM), all bits of the M27C64A are in the
"1" state. Data is introduced by selectively programming "0"s into the desired bit locations.
Although only "0"s will be programmed, both "1"s and "0"s can be present in the data word.
The only way to change a "0" to a "1" is by die exposition to ultraviolet light (UV EPROM).
The M27C64A is in the programming mode when VPP input is at 12.5V, E is at VIL and P is
pulsed to VIL. The data to be programmed is applied to 8 bits in parallel to the data output
pins. The levels required for the address and data inputs are TTL. VCC is specified to be 6V
± 0.25V.
2.6
High-speed programming
The high speed programming algorithm, described in Figure 4, rapidly programs the
M27C64A using an efficient and reliable method, particularly suited to the production
programming environment. An individual device will take around 1 minute to program.
Figure 4.
Programming Flowchart
V
= 6V, V = 12.5V
PP
CC
n = 1
P = 1ms Pulse
NO
NO
++n
VERIFY
YES
++ Addr
> 25
YES
P = 3ms Pulse by n
FAIL
Last
NO
Addr
YES
CHECK ALL BYTES
1st: V
2nd: V
= 6V
= 4.2V
CC
CC
AI01167
9/22
Device operation
M27C64A
2.7
Program Inhibit
Programming of multiple M27C64A in parallel with different data is also easily
accomplished. Except for E, all like inputs including G of the parallel M27C64A may be
common. A TTL low level pulse applied to a M27C64A P input, with E low and VPP at 12.5V,
will program that M27C64A. A high level E input inhibits the other M27C64A from being
programmed.
2.8
2.9
Program Verify
A verify (read) should be performed on the programmed bits to determine that they were
correctly programmed. The verify is accomplished with E and G at VIL, P at VIH, VPP at
12.5V and VCC at 6V.
Electronic Signature
The Electronic Signature (ES) mode allows the reading out of a binary code from an
EPROM that will identify its manufacturer and type. This mode is intended for use by
programming equipment to automatically match the device to be programmed with its
corresponding programming algorithm. The ES mode is functional in the 25°C ± 5°C
ambient temperature range that is required when programming the M27C64A. To activate
the ES mode, the programming equipment must force 11.5V to 12.5V on address line A9 of
the M27C64A, with VPP = VCC = 5V. Two identifier bytes may then be sequenced from the
device outputs by toggling address line A0 from VIL to VIH. All other address lines must be
held at VIL during Electronic Signature mode.
Byte 0 (A0 = VIL) represents the manufacturer code and byte 1 (A0=VIH) the device identifier
code. For the STMicroelectronics M27C64A, these two identifier bytes are given in Table 3:
Electronic Signature and can be read-out on outputs Q7 to Q0.
2.10
Erasure operation (applies to UV EPROMs)
The erasure characteristics of the M27C64A is such that erasure begins when the cells are
exposed to light with wavelengths shorter than approximately 4000 Å. It should be noted
that sunlight and some type of fluorescent lamps have wavelengths in the 3000-4000 Å
range. Research shows that constant exposure to room level fluorescent lighting could
erase a typical M27C64A in about 3 years, while it would take approximately 1 week to
cause erasure when exposed to direct sunlight. If the M27C64A is to be exposed to these
types of lighting conditions for extended periods of time, it is suggested that opaque labels
be put over the M27C64A window to prevent unintentional erasure. The recommended
erasure procedure for the M27C64A is exposure to short wave ultraviolet light which has a
wavelength of 2537 Å. The integrated dose (i.e. UV intensity x exposure time) for erasure
should be a minimum of 15 W-sec/cm2. The erasure time with this dosage is approximately
15 to 20 minutes using an ultraviolet lamp with 12000 µW/cm2 power rating. The M27C64A
should be placed within 2.5 cm (1 inch) of the lamp tubes during the erasure. Some lamps
have a filter on their tubes which should be removed before erasure.
10/22
M27C64A
Device operation
Table 2.
Operating Modes(1)
Mode
E
G
P
A9
VPP
Q70-Q0
Read
VIL
VIL
VIL
VIL
VIH
VIH
VIL
VIL
VIH
X
VIH
VIH
X
X
VCC
VCC
VPP
VPP
VPP
VCC
VCC
Data Out
Hi-Z
Output Disable
Program
VIL Pulse
VIH
X
Data Input
Data Output
Hi-Z
Verify
VIL
X
X
Program Inhibit
Standby
X
X
X
X
X
Hi-Z
Electronic Signature
VIL
VIH
VID
Codes
1. X = V or V , V = 12V ± 0.5V.
IH
IL
ID
Table 3.
Electronic Signature
Identifier
A0
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0 Hex Data
Manufacturer’s
Code
VIL
1
0
0
0
0
0
1
0
1
1
0
0
1
0
1
0
9Bh
08h
Device Code
VIH
11/22
Maximum rating
M27C64A
3
Maximum rating
Stressing the device above the rating listed in the Absolute Maximum Ratings table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the Operating sections of
this specification is not implied. Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
Program and other relevant quality documents.
Table 4.
Symbol
Absolute Maximum Ratings(1)
Parameter
Value
Unit
TA
Ambient Operating Temperature (3)
Temperature Under Bias
Storage Temperature
–40 to 125
–50 to 125
–65 to 150
–2 to 7
°C
°C
°C
V
TBIAS
TSTG
(2)
VIO
Input or Output Voltage (except A9)
Supply Voltage
VCC
–2 to 7
V
(2)
VA9
A9 Voltage
–2 to 13.5
–2 to 14
V
VPP
Program Supply Voltage
V
1. Minimum DC voltage on Input or Output is –0.5V with possible undershoot to –2.0V for a period less than
20ns. Maximum DC voltage on Output is V +0.5V with possible overshoot to V +2V for a period less
CC
CC
than 20ns.
2. Depends on range.
12/22
M27C64A
DC and AC parameters
4
DC and AC parameters
This section summarizes the operating and measurement conditions, and the DC and AC
characteristics of the device. The parameters in the DC and AC Characteristic tables that
follow are derived from tests performed under the Measurement Conditions summarized in
the relevant tables. Designers should check that the operating conditions in their circuit
match the measurement conditions when relying on the quoted parameters.
Table 5.
AC Measurement Conditions(1)
Input Rise and Fall Times
≤20ns
Input Pulse Voltages
0.4V to 2.4V
0.8 to 2.0V
Input and Output Timing Ref. Voltages
1. Note that Output Hi-Z is defined as the point where data is no longer driven.
Figure 5.
AC Testing Input Output Waveform
2.4V
2.0V
0.8V
0.4V
AI00826
Figure 6.
AC Testing Load Circuit
1.3V
1N914
3.3kΩ
DEVICE
UNDER
TEST
OUT
C
= 100pF
L
C
includes JIG capacitance
L
AI00828
Table 6.
Symbol
Capacitance(1)(2)
Parameter
Test Condition
Min
Max
Unit
CIN
Input Capacitance
Output Capacitance
VIN = 0V
6
pF
pF
COUT
VOUT = 0V
12
1. Sampled only, not 100% tested.
2. = 25 °C, f = 1 MHz.
T
A
13/22
DC and AC parameters
M27C64A
Table 7.
Symbol
Read Mode DC Characteristics(1)(2)
Parameter Test Condition
Min
Max
Unit
ILI
Input Leakage Current
Output Leakage Current
0V ≤VIN ≤VCC
±10
±10
µA
µA
ILO
0V ≤VOUT ≤VCC
E = VIL, G = VIL,
IOUT = 0mA, f = 5MHz
ICC
ICC1
ICC2
Supply Current
30
1
mA
mA
µA
Supply Current (Standby) TTL
E = VIH
E > VCC – 0.2V
VPP = VCC
Supply Current (Standby)
CMOS
100
IPP
VIL
Program Current
100
0.8
µA
V
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage TTL
–0.3
2
(3)
VIH
VCC + 1
0.4
V
VOL
IOL = 2.1mA
V
IOH = –400µA
2.4
V
VOH
VCC
0.7V
–
Output High Voltage CMOS
IOH = –100µA
1.
2.
T
= 0 to 70 °C or –40 to 85 °C: V = 5V ± 10%; V = V
.
A
CC
PP
CC
V
must be applied simultaneously with or before V and removed simultaneously or after V
.
CC
PP
PP
3. Maximum DC voltage on Output is V +0.5V.
CC
Table 8.
Symbol
Programming Mode DC Characteristics(1)(2)
Parameter
Test Condition
Min
Max
Unit
ILI
ICC
IPP
Input Leakage Current
Supply Current
V
IL ≤VIN ≤VIH
±10
30
µA
mA
mA
V
Program Current
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage TTL
A9 Voltage
E = VIL
30
VIL
–0.3
2
0.8
VIH
VOL
VOH
VID
VCC + 0.5
0.4
V
IOL = 2.1mA
V
IOH = –400µA
2.4
V
11.5
12.5
V
1.
2.
T = 25 °C; V = 6V ± 0.25V; V = 12.5V ± 0.25V.
A CC PP
V
must be applied simultaneously with or before V and removed simultaneously or after V
.
CC
PP
PP
14/22
M27C64A
Table 9.
DC and AC parameters
Read Mode AC Characteristics 1(1)(2)
M27C64A
-15
Min Max Min Max Min Max
Symbol
Alt
Parameter
Test Condition
-10
-20
Unit
Address Valid to Output
Valid
tAVQV
tELQV
tGLQV
tACC
tCE
tOE
tDF
E = VIL, G = VIL
G = VIL
100
100
50
150
150
75
200
200
80
ns
ns
ns
ns
ns
ns
Chip Enable Low to
Output Valid
Output Enable Low to
Output Valid
E = VIL
Chip Enable High to
Output Hi-Z
(3)
tEHQZ
G = VIL
0
0
0
50
0
0
0
50
0
0
0
50
Output Enable High to
Output Hi-Z
(3)
tGHQZ
tDF
E = VIL
50
50
50
Address Transition to
Output Transition
tAXQX
tOH
E = VIL, G = VIL
1.
2.
T
= 0 to 70 °C or –40 to 85 °C: V = 5V ± 10%; V = V
.
CC
A
CC
PP
V
must be applied simultaneously with or before V and removed simultaneously or after V
.
PP
CC
PP
3. Sampled only, not 100% tested.
Table 10. Read Mode AC Characteristics 2(1)(2)
M27C64A
Symbol
Alt
Parameter
Test Condition
-25
-30
Unit
Min
Max
Min
Max
Address Valid to Output
Valid
tAVQV
tELQV
tGLQV
tACC
tCE
tOE
tDF
E = VIL, G = VIL
G = VIL
250
250
100
60
300
300
120
105
105
ns
ns
ns
ns
ns
ns
Chip Enable Low to
Output Valid
Output Enable Low to
Output Valid
E = VIL
Chip Enable High to
Output Hi-Z
(3)
tEHQZ
G = VIL
0
0
0
0
0
0
Output Enable High to
Output Hi-Z
(3)
tGHQZ
tDF
E = VIL
60
Address Transition to
Output Transition
tAXQX
tOH
E = VIL, G = VIL
1.
2.
T
= 0 to 70 °C or –40 to 85 °C: V = 5V ± 10%; V = V
.
CC
A
CC
PP
V
must be applied simultaneously with or before V and removed simultaneously or after V
.
PP
CC
PP
3. Sampled only, not 100% tested.
15/22
DC and AC parameters
M27C64A
Figure 7.
Read Mode AC Waveforms
VALID
tAVQV
VALID
A0-A12
E
tAXQX
tEHQZ
tGHQZ
tGLQV
G
tELQV
Hi-Z
Q0-Q7
AI00778B
16/22
M27C64A
DC and AC parameters
Table 11. Programming Mode AC Characteristics(1)(2)
Symbol
Alt
Parameter
Test Condition
Min
Max
Unit
tAVPL
tQVPL
tVPHPL
tVCHPL
tELPL
tAS
tDS
Address Valid to Program Low
Input Valid to Program Low
2
2
µs
µs
µs
µs
µs
ms
ms
µs
µs
ns
ns
tVPS
tVCS
tCES
VPP High to Program Low
2
VCC High to Program Low
2
Chip Enable Low to Program Low
Program Pulse Width (Initial)
2
0.95
2.85
2
1.05
tPLPH
tPW
Program Pulse Width (Over Program)
Program High to Input Transition
Input Transition to Output Enable Low
Output Enable Low to Output Valid
Output Enable High to Output Hi-Z
78.75
tPHQX
tQXGL
tGLQV
tDH
tOES
tOE
2
100
130
(3)
tGHQZ
tDFP
0
0
Output Enable High to Address
Transition
tGHAX
tAH
ns
1.
2.
T = 25 °C; V = 6V ± 0.25V; V = 12.5V ± 0.25V.
A CC PP
V
must be applied simultaneously with or before V and removed simultaneously or after V
.
PP
CC
PP
3. Sampled only, not 100% tested.
Figure 8.
Programming and Verify Modes AC Waveforms
VALID
A0-A12
Q0-Q7
tAVPL
tQVPL
tVPHPL
tVCHPL
tELPL
DATA IN
DATA OUT
tPHQX
V
PP
tGLQV
tGHQZ
tGHAX
V
CC
E
P
tPLPH
tQXGL
G
PROGRAM
VERIFY
AI00779
17/22
Package mechanical data
M27C64A
5
Package mechanical data
Figure 9.
FDIP28W - 28 pin Ceramic Frit-seal DIP, with window, Package Outline
A2
A3
A1
A
L
α
B1
B
e
C
eA
eB
D2
D
S
N
1
E1
E
FDIPW-a
1. Drawing is not to scale.
Table 12. FDIP28W - 28 pin Ceramic Frit-seal DIP, with window, Package Mechanical Data
millimeters
Min
inches
Min
Symbol
Typ
Max
Typ
Max
A
A1
A2
A3
B
5.72
1.40
4.57
4.50
0.56
–
0.225
0.055
0.180
0.177
0.022
–
0.51
3.91
3.89
0.41
–
0.020
0.154
0.153
0.016
–
B1
C
1.45
0.057
0.23
36.50
–
0.30
37.34
–
0.009
1.437
–
0.012
1.470
–
D
D2
E
33.02
15.24
1.300
0.600
–
–
–
–
E1
e
13.06
–
13.36
–
0.514
–
0.526
–
2.54
0.100
0.590
eA
eB
L
14.99
–
–
–
–
16.18
3.18
1.52
–
18.03
4.10
2.49
–
0.637
0.125
0.060
–
0.710
0.161
0.098
–
S
7.11
0.280
α
4°
11°
4°
11°
N
28
28
18/22
M27C64A
Package mechanical data
Figure 10. PLCC32 - 32 lead Plastic Leaded Chip Carrier, Package Outline
D
A1
D1
A2
1
N
B1
e
E2
E2
E3
E1 E
F
B
0.51 (.020)
1.14 (.045)
D3
A
R
CP
D2
D2
PLCC-A
1. Drawing is not to scale.
Table 13. PLCC32 - 32 lead Plastic Leaded Chip Carrier, mechanical data
millimeters
Min
inches
Min
Symbol
Typ
Max
Typ
Max
A
A1
A2
B
3.18
1.53
0.38
0.33
0.66
3.56
2.41
–
0.125
0.060
0.015
0.013
0.026
0.140
0.095
–
0.53
0.81
0.10
12.57
11.51
5.66
–
0.021
0.032
0.004
0.495
0.453
0.223
–
B1
CP
D
12.32
11.35
4.78
–
0.485
0.447
0.188
–
D1
D2
D3
E
7.62
0.300
14.86
13.89
6.05
–
15.11
14.05
6.93
–
0.585
0.547
0.238
–
0.595
0.553
0.273
–
E1
E2
E3
e
10.16
1.27
0.400
0.050
–
–
–
–
F
0.00
–
0.13
–
0.000
–
0.005
–
R
0.89
32
0.035
32
N
19/22
Part numbering
M27C64A
6
Part numbering
Table 14. Ordering Information Scheme
Example:
M27C64A
-10 K 1
Device Type
M27
Supply Voltage
C = 5V ±10%
Device Function
64A = 64 Kbit (8Kb x8)
Speed
-10 = 100 ns
-15 = 150 ns
-20 = 200 ns
-25 = 250 ns
-30 = 300 ns
Package
F = FDIP28W
K = PLCC32
Temperature Range
1 = 0 to 70 °C
6 = –40 to 85 °C
For a list of available options (Speed, Package, etc...) or for further information on any
aspect of this device, please contact the STMicroelectronics Sales Office nearest to you.
20/22
M27C64A
Revision history
7
Revision history
Table 15. Document revision history
Date
Revision
Changes
March 1998
25-Sep-2000
1.0
2.0
First Issue
AN620 Reference removed
100ns speed class added
29-Oct-2002
06-Apr-2006
2.1
3
FDIP28W mechanical data clarified (Table 12)
PLCC32 mechanical data and drawing clarified (Table 13, Figure 10)
Datasheet converted to new corporate template.
Packages are ECOPACK® compliant.
Tape & Reel and Additional Burn-in options removed from Table 14:
Ordering Information Scheme.
21/22
M27C64A
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