STMicroelectronics M27W512-100K6 512 kbit (64 kbit x8) low-voltage otp eprom Datasheet

M27W512
512 Kbit (64 Kbit x8) low-voltage OTP EPROM
Features
■
2.7 to 3.6 V supply voltage in read operation
■
Access time: 100 ns
■
Pin compatibility with M27C512
■
Low power consumption
– 15 µA max Standby current
– 15 mA max Active current at 5 MHz
■
Programming time 100 µs/byte
■
High reliability CMOS technology
– 2000 V ESD protection
– 200 mA latch-up protection immunity
■
Electronic signature
– Manufacturer code: 20h
– Device code: 3Dh
■
ECOPACK® packages
June 2008
PLCC32 (K)
Rev 4
1/22
www.st.com
1
Contents
M27W512
Contents
1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Device operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1
Read mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2
Standby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3
Two line output control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4
System considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.6
PRESTO IIB programming algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.7
Program inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.8
Program verify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.9
Electronic signature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4
DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6
Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2/22
M27W512
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.
Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electronic signature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
AC measurement conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Read mode DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Read mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Programming mode DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Margin mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Programming mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
PLCC32 - 32 lead plastic leaded chip carrier, package mechanical data. . . . . . . . . . . . . . 19
Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3/22
List of figures
M27W512
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
4/22
Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
LCC connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Programming flowchart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
AC testing input output waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
AC testing load circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Read mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Margin mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Programming and verify mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
PLCC32 - 32 lead plastic leaded chip carrier, package outline . . . . . . . . . . . . . . . . . . . . . 19
M27W512
1
Description
Description
The M27W512 is a low-voltage, 512 Kbit OTP (one-time programmable) EPROM. It is
ideally suited to microprocessor systems and are organized as 65536 by 8 bits.
The M27W512 operates in the read mode with a supply voltage as low as 2.7 V at –40 to
85 °C temperature range. The decrease in operating power allows either a reduction of the
size of the battery or an increase in the time between battery recharges.
For applications where the content is programmed only one time and erasure is not
required, the M27W512 is offered in PLCC32 packages.
Figure 1.
Logic diagram
VCC
16
8
A0-A15
E
Q0-Q7
M27W512
GVPP
VSS
AI01584
5/22
Description
M27W512
Table 1.
Signal names
Signal names
Function
A0-A15
Address inputs
Q0-Q7
Data outputs
E
Chip Enable
GVPP
Output Enable / Program supply
VCC
Supply voltage
VSS
Ground
NC
Not connected internally
DU
Don’t use
LCC connections
A7
A12
A15
DU
VCC
A14
A13
Figure 2.
1 32
A6
A5
A4
A3
A2
A1
A0
NC
Q0
9
M27W512
25
A8
A9
A11
NC
GVPP
A10
E
Q7
Q6
VSS
DU
Q3
Q4
Q5
Q1
Q2
17
AI01585
6/22
M27W512
2
Device operation
Device operation
The modes of operations of the M27W512 are listed in Table 2: Operating modes. A single
power supply is required in the read mode. All inputs are TTL levels except for GVPP and
12V on A9 for Electronic Signature.
2.1
Read mode
The M27W512 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
Standby mode
The M27W512 has a standby mode which reduces the supply current from 15mA to 15µA
with low voltage operation VCC ≤ 3.6V, see Table 7: Read mode DC characteristics.
Characteristics table for details. The M27W512 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 GVPP input.
Table 2.
Operating modes(1)
Mode
E
GVPP
A9
Q7-Q0
Read
VIL
VIL
X
Data Out
Output Disable
VIL
VIH
X
Hi-Z
VIL Pulse
VPP
X
Data In
Program Inhibit
VIH
VPP
X
Hi-Z
Standby
VIH
X
X
Hi-Z
Electronic Signature
VIL
VIL
VID
Codes
Program
1. X = VIH or VIL, VID = 12V ± 0.5V.
Table 3.
Electronic signature
Identifier
A0
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
Hex data
Manufacturer code
VIL
0
0
1
0
0
0
0
0
20h
Device code
VIH
0
0
1
1
1
1
0
1
3Dh
7/22
Device operation
2.3
M27W512
Two line output control
Because EPROMs are usually used in larger memory arrays, the 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 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.
8/22
M27W512
Device operation
Figure 3.
Programming flowchart
VCC = 6.25V, VPP = 12.75V
SET MARGIN MODE
n=0
E = 100μs Pulse
NO
++n
= 25
YES
FAIL
NO
++ Addr
VERIFY
YES
Last
Addr
NO
YES
RESET MARGIN MODE
CHECK ALL BYTES
1st: VCC = 5V
2nd: VCC = 2.7V
AI00738C
2.5
Programming
The M27W512 has been designed to be fully compatible with the M27C512 and has the
same electronic signature. As a result, the M27W512 can be programmed as the M27C512
on the same programming equipment applying 12.75V on VPP and 6.25V on VCC. The
M27W512 can use PRESTO IIB Programming Algorithm that drastically reduces the
programming time. Nevertheless to achieve compatibility with all programming equipment,
PRESTO II Programming Algorithm can be used as well. When delivered, all bits of the
M27W512 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 M27W512 is in the programming mode when VPP input is at
12.75V and E 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 6.25V ± 0.25V.
9/22
Device operation
2.6
M27W512
PRESTO IIB programming algorithm
PRESTO IIB programming algorithm allows the whole array to be programmed with a
guaranteed margin, in a typical time of 6.5 seconds. This can be achieved with
STMicroelectronics M27W512 due to several design innovations described in the M27W512
datasheet to improve programming efficiency and to provide adequate margin for reliability.
Before starting the programming the internal MARGIN MODE circuit must be set in order to
guarantee that each cell is programmed with enough margin. Then a sequence of 100µs
program pulses is applied to each byte until a correct verify occurs (see Figure 3). No
overprogram pulses are applied since the verify in MARGIN MODE at VCC much higher than
3.6V, provides the necessary margin.
2.7
Program inhibit
Programming of multiple devices in parallel with different data is also easily accomplished.
Except for E, all like inputs including GVPP of the parallel M27W512 may be common. A TTL
low level pulse applied to a M27W512 E input, with VPP at 12.75V, will program this device.
A high level E input inhibits the other M27W512 from being programmed.
2.8
Program verify
A verify (read) should be performed on the programmed bits to determine that they were
correctly programmed. The verify is accomplished with G at VIL. Data should be verified with
tELQV after the falling edge of E.
2.9
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 M27W512. To activate
the ES mode, the programming equipment must force 11.5V to 12.5V on address line A9 of
the M27W512. 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 M27W512, these two
identifier bytes are given in Table 3 and can be read-out on outputs Q7 to Q0.
Note that the M27W512 and M27C512 have the same identifier byte.
10/22
M27W512
3
Maximum rating
Maximum rating
Stressing the device outside the ratings listed in Table 4 may cause permanent damage to
the device. These are stress ratings only, and operation of the device at these, or any other
conditions outside 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.
Absolute maximum ratings
Symbol
TA
Parameter
Ambient operating
temperature(1)
Value
Unit
–40 to 125
°C
TBIAS
Temperature under bias
–50 to 125
°C
TSTG
Storage temperature
–65 to 150
°C
VIO(2)
Input or output voltage (except A9)
–2 to 7
V
Supply voltage
–2 to 7
V
–2 to 13.5
V
–2 to 14
V
VCC
VA9(2)
VPP
A9 voltage
Program supply voltage
1. Depends on range.
2. 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 VCC +0.5V with possible overshoot to VCC +2V for a period less
than 20ns.
11/22
DC and AC parameters
4
M27W512
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
High speed
Standard
Input rise and fall times
≤10ns
≤20ns
Input pulse voltages
0 to 3V
0.4V to 2.4V
1.5V
0.8V and 2V
Input and output timing ref. voltages
Figure 4.
AC testing input output waveform
High Speed
3V
1.5V
0V
Standard
2.4V
2.0V
0.8V
0.4V
AI01822
Figure 5.
AC testing load circuit
1.3V
1N914
3.3kΩ
DEVICE
UNDER
TEST
OUT
CL
CL = 30pF for High Speed
CL = 100pF for Standard
CL includes JIG capacitance
12/22
AI01823B
M27W512
Table 6.
DC and AC parameters
Capacitance
Symbol
CIN
COUT
Parameter
Input capacitance
Output capacitance
Test condition(1)(2)
Min
Max
Unit
VIN = 0V
6
pF
VOUT = 0V
12
pF
1. TA = 25°C, f = 1MHz
2. Sampled only, not 100% tested.
Table 7.
Symbol
Read mode DC characteristics
Parameter
Test condition(1)
Min
Max
Unit
0V ≤VIN ≤VCC
±10
µA
0V ≤VOUT ≤VCC
±10
µA
E = VIL, G = VIL,
IOUT = 0mA, f = 5MHz
VCC ≤3.6V
15
mA
E = VIH
1
mA
E > VCC – 0.2V,
VCC ≤3.6V
15
µA
VPP = VCC
10
µA
ILI
Input leakage current
ILO
Output leakage current
ICC
Supply current
ICC1
Supply current (Standby) TTL
ICC2
Supply current (Standby) CMOS
IPP
Program current
VIL
Input low voltage
–0.6
0.2 VCC
V
Input high voltage
0.7 VCC
VCC + 0.5
V
0.4
V
VIH
(2)
VOL
Output low voltage
IOL = 2.1mA
VOH
Output high voltage TTL
IOH = –1mA
2.4
V
1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
2. Maximum DC voltage on Output is VCC +0.5V.
13/22
DC and AC parameters
Table 8.
M27W512
Read mode AC characteristics
M27W512
Symbol
Alt
Test
condition
Parameter
(1)
-70(2)
-80(2)
-100
VCC = 3.0 to
3.6V
VCC = 2.7 to
3.6V
VCC = 2.7 to
3.6V
Min
Min
Min
Max
Max
Unit
Max
tAVQV
tACC
Address valid to
output valid
E = VIL,
G = VIL
70
80
100
ns
tELQV
tCE
Chip Enable low to
output valid
G = VIL
70
80
100
ns
tGLQV
tOE
Output Enable low to
output valid
E = VIL
40
50
60
ns
tEHQZ(3)
tDF
Chip Enable high to
output Hi-Z
G = VIL
0
40
0
50
60
ns
tGHQZ(3)
tDF
Output Enable high to
output Hi-Z
E = VIL
0
40
0
50
60
ns
tAXQX
tOH
Address transition to
output transition
E = VIL,
G = VIL
0
0
ns
1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
2. Speed obtained with High Speed AC measurement conditions.
3. Sampled only, not 100% tested.
Figure 6.
Read mode AC waveforms
A0-A15
VALID
tAVQV
VALID
tAXQX
E
tGLQV
tEHQZ
G
tELQV
Q0-Q7
tGHQZ
Hi-Z
AI00735B
14/22
M27W512
Table 9.
DC and AC parameters
Programming mode DC characteristics
Symbol
Test condition(1)(2)
Parameter
Min
VIL ≤VIN ≤VIH
Max
Unit
±10
µA
50
mA
50
mA
ILI
Input leakage current
ICC
Supply current
IPP
Program current
VIL
Input low voltage
–0.3
0.8
V
VIH
Input high voltage
2
VCC + 0.5
V
VOL
Output low voltage
IOL = 2.1mA
0.4
V
VOH
Output high voltage TTL
IOH = –1mA
VID
A9 voltage
E = VIL
3.6
V
11.5
12.5
V
1. TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12.75V ± 0.25V
2. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
Table 10.
Margin mode AC characteristics
Parameter
Test condition(1)(2)
Symbol
Alt
Min
Max
Unit
tA9HVPH
tAS9
VA9 high to VPP high
2
µs
tVPHEL
tVPS
VPP high to Chip Enable low
2
µs
tA10HEH
tAS10
VA10 high to Chip Enable high (set)
1
µs
tA10LEH
tAS10
VA10 low to Chip Enable high (reset)
1
µs
tEXA10X
tAH10
Chip Enable transition to VA10 transition
1
µs
tEXVPX
tVPH
Chip Enable transition to VPP transition
2
µs
tVPXA9X
tAH9
VPP transition to VA9 transition
2
µs
1. TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12.75V ± 0.25V
2. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
15/22
DC and AC parameters
Figure 7.
M27W512
Margin mode AC waveforms
VCC
A8
A9
tA9HVPH
tVPXA9X
GVPP
tVPHEL
tEXVPX
E
tA10HEH
tEXA10X
A10 Set
A10 Reset
tA10LEH
AI00736B
1. A8 High level = 5V; A9 High level = 12V.
Table 11.
Programming mode AC characteristics
Parameter
Test condition(1)(2)
Symbol
Alt
Min
tAVEL
tAS
Address valid to Chip Enable low
2
µs
tQVEL
tDS
Input Valid to Chip Enable low
2
µs
tVCHEL
tVCS
VCC high to Chip Enable low
2
µs
tVPHEL
tOES
VPP high to Chip Enable low
2
µs
tVPLVPH
tPRT
VPP rise time
50
ns
tELEH
tPW
Chip Enable program pulse width (Initial)
95
tEHQX
tDH
Chip Enable high to input transition
2
µs
tEHVPX
tOEH
Chip Enable high to VPP transition
2
µs
tVPLEL
tVR
VPP low to Chip Enable low
2
µs
tELQV
tDV
Chip Enable low to output valid
tEHQZ(3)
tDFP
Chip Enable high to output Hi-Z
0
tEHAX
tAH
Chip Enable high to address transition
0
1. TA = 25 °C; VCC = 6.25V ± 0.25V; VPP = 12.75V ± 0.25V
2. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
3. Sampled only, not 100% tested.
16/22
Max
105
Unit
µs
1
µs
130
ns
ns
M27W512
Figure 8.
DC and AC parameters
Programming and verify mode AC waveforms
A0-A15
VALID
tAVEL
tEHAX
DATA IN
Q0-Q7
DATA OUT
tEHQX
tQVEL
VCC
tEHQZ
tELQV
tVCHEL
tEHVPX
GVPP
tVPLEL
tVPHEL
E
tELEH
PROGRAM
VERIFY
AI00737
17/22
Package mechanical data
5
M27W512
Package mechanical data
In order to meet environmental requirements, ST offers the M27W512 in ECOPACK®
packages. These packages have a lead-free second level interconnect. 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.
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M27W512
Package mechanical data
Figure 9.
PLCC32 - 32 lead plastic leaded chip carrier, package outline
D
D1
A1
A2
1 N
B1
E2
e
E1 E
E3
F
B
0.51 (.020)
E2
1.14 (.045)
A
D3
R
D2
CP
D2
PLCC-A
1. Drawing is not to scale.
Table 12.
PLCC32 - 32 lead plastic leaded chip carrier, package mechanical data
inches(1)
millimeters
Symbol
Typ
Min
Max
A
3.175
A1
Min
Max
3.556
0.1250
0.1400
1.530
2.413
0.0602
0.0950
A2
0.381
-
0.0150
-
B
0.330
0.533
0.0130
0.0210
B1
0.660
0.813
0.0260
0.0320
CP
Typ
0.100
0.0039
D
12.319
12.573
0.4850
0.4950
D1
11.354
11.506
0.4470
0.4530
D2
4.780
5.660
0.1882
0.2228
-
-
-
-
E
14.859
15.113
0.5850
0.5950
E1
13.894
14.046
0.5470
0.5530
E2
6.050
6.930
0.2382
0.2728
D3
7.620
0.3000
E3
10.160
-
-
0.4000
-
-
e
1.270
-
-
0.0500
-
-
0.000
0.127
0.0000
0.0050
-
-
-
-
F
R
N (number of pins)
0.889
0.0350
32
32
1. Values in inches are converted from mm and rounded to 4 decimal digits.
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Part numbering
6
M27W512
Part numbering
Table 13.
Ordering information scheme
Example:
M27W512
-100
K 6
TR
Device type
M27
Supply voltage
W = 2.7 V to 3.6 V
Device function
512 = 512 Kbit (64 Kb x 8)
Speed
-100= 100 ns
Package
K = PLCC32
Temperature range
6 = –40 to 85 °C
Options
Blank = Standard packing
TR = Tape and reel packing
For a list of available options (speed, package, etc.) or for further information on any aspect
of this device, please contact your nearest ST sales office.
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M27W512
7
Revision history
Revision history
Table 14.
Document revision history
Date
Revision
Changes
20-Mar-2000
1.1
FDIP28W Package Dimension, L Max added (Table 12)
TSOP32 Package Dimension changed (Table 13)
0 to 70°C Temperature Range deleted
Speed Classes changed
15-Jun-2001
1.2
Typing error (Table 8)
30-Aug-2002
1.3
Package mechanical data clarified for FDIP28W (Table 12), PDIP28
(Table 13),
PLCC32 (Table 12, Figure 9) and TSOP28 (Table 13, Figure 11)
08-Nov-2004
2.0
Details of ECOPACK lead-free package options added
27-Apr-2007
09-Jun-2008
3
Document reformatted.
FDIP28W and PDIP28 packages removed.
120, 150 and 200ns access times removed from Table 13: Ordering
information scheme.
4
Small text changes. UV range no longer offered (references to UV
removed).
TSOP28 package removed. Package mechanical data in inches
calculated from millimeters and rounded to three decimals (see
Table 12: PLCC32 - 32 lead plastic leaded chip carrier, package
mechanical data).
E and F options and 80 ns speed class removed from Table 13:
Ordering information scheme.
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M27W512
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