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M27128A-2F1 데이터시트 PDF




STMicroelectronics에서 제조한 전자 부품 M27128A-2F1은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


PDF 형식의 M27128A-2F1 자료 제공

부품번호 M27128A-2F1 기능
기능 NMOS 128K 16K x 8 UV EPROM
제조업체 STMicroelectronics
로고 STMicroelectronics 로고


M27128A-2F1 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




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M27128A-2F1 데이터시트, 핀배열, 회로
M27128A
NMOS 128K (16K x 8) UV EPROM
FAST ACCESS TIME: 200ns
EXTENDED TEMPERATURE RANGE
SINGLE 5 V SUPPLY VOLTAGE
LOW STANDBY CURRENT: 40mA max
TTL COMPATIBLE DURING READ and
PROGRAM
FAST PROGRAMMING ALGORITHM
ELECTRONIC SIGNATURE
PROGRAMMING VOLTAGE: 12V
28
1
FDIP28W (F)
DESCRIPTION
The M27128A is a 131,072 bit UV erasable and
electrically programmable memory EPROM. It is
organized as 16,384 words by 8 bits.
The M27128A is housed in a 28 Pin Window Ce-
ramic Frit-Seal Dual-in-Line package. The trans-
parent lid 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 follow-
ing the programming procedure.
Figure 1. Logic Diagram
VCC VPP
14
A0-A13
8
Q0-Q7
Table 1. Signal Names
A0 - A13
Q0 - Q7
E
G
P
VPP
VCC
VSS
Address Inputs
Data Outputs
Chip Enable
Output Enable
Program
Program Supply
Supply Voltage
Ground
P M27128A
E
G
VSS
AI00769B
March 1995
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M27128A-2F1 pdf, 반도체, 판매, 대치품
M27128A
AC MEASUREMENT CONDITIONS
Input Rise and Fall Times
Input Pulse Voltages
Input and Output Timing Ref. Voltages
20ns
0.45V to 2.4V
0.8V to 2.0V
Note that Output Hi-Z is defined as the point where data
is no longer driven.
Figure 3. AC Testing Input Output Waveforms
2.4V
0.45V
2.0V
0.8V
AI00827
Figure 4. AC Testing Load Circuit
1.3V
1N914
DEVICE
UNDER
TEST
3.3k
OUT
CL = 100pF
CL includes JIG capacitance
AI00828
Table 5. Capacitance (1) (TA = 25 °C, f = 1 MHz )
Symbol
Parameter
CIN Input Capacitance
COUT
Output Capacitance
Note: 1. Sampled only, not 100% tested.
Test Condition
VIN = 0V
VOUT = 0V
Min Max Unit
= 6 pF
= 12 pF
Figure 5. Read Mode AC Waveforms
A0-A13
E
G
Q0-Q7
tAVQV
VALID
tGLQV
tELQV
tAXQX
tEHQZ
tGHQZ
DATA OUT
Hi-Z
AI00771
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M27128A-2F1 전자부품, 판매, 대치품
M27128A
Figure 6. Programming and Verify Modes AC Waveforms
A0-A13
Q0-Q7
VPP
VCC
E
P
G
tAVPL
DATA IN
tQVPL
tVPHPL
tVCHPL
tELPL
tPLPH
VALID
tPHQX
DATA OUT
tGLQV
tQXGL
PROGRAM
VERIFY
tGHQZ
tGHAX
AI00772
Figure 7. Programming Flowchart
VCC = 6V, VPP = 12.5V
n=1
NO
++n
> 25
YES
FAIL
P = 1ms Pulse
NO
VERIFY
++ Addr
YES
P = 3ms Pulse by n
Last NO
Addr
YES
CHECK ALL BYTES
VCC = 5V, VPP 5V
AI00775B
DEVICE OPERATION (cont’d)
continually monitored to determine when it has
been successfully programmed. A flowchart of the
M27128A Fast Programming Algorithm is shown
on the last page. The Fast Programming Algorithm
utilizes two different pulse types: initial and over-
program.
The duration of the initial P pulse(s) is 1ms, which
will then be followed by a longer overprogram pulse
of length 3ms by n (n is equal to the number of the
initial one millisecond pulses applied to a particular
M27128A location), before a correct verify occurs.
Up to 25 one-millisecond pulses per byte are pro-
vided for before the over program pulse is applied.
The entire sequence of program pulses and byte
verifications is performed at VCC = 6V and VPP =
12.5V. When the Fast Programming cycle has been
completed, all bytes should be compared to the
original data with VCC = 5 and VPP = 5V.
Program Inhibit
Programming of multiple M27128A’s in parallel with
different data is also easily accomplished. Except
for E, all like inputs (including G) of the parallel
M27128A may be common. A TTL low pulse ap-
plied to a M27128A’s E input, with VPP = 12.5V, will
program that M27128A. A high level E input inhibits
the other M27128As from being programmed.
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