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PDF 27C256PC-15 Data sheet ( Hoja de datos )

Número de pieza 27C256PC-15
Descripción MX27C256PC-15
Fabricantes Macronix International 
Logotipo Macronix International Logotipo



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FEATURES
32K x 8 organization
Single +5V power supply
+12.5V programming voltage
Fast access time: 45/55/70/90/100/120/150 ns
Totally static operation
Completely TTL compatible
GENERAL DESCRIPTION
The MX27C256 is a 5V only, 256K-bit, One-Time
Programmable Read Only Memory. It is organized as
32K by 8 bits, operates from a single + 5volt supply, has
a static standby mode, and features fast single address
location programming. All programming signals are TTL
levels, requiring a single pulse. For programming from
outside the system, existing EPROM programmers
MX27C256
256K-BIT [32K x 8] CMOS EPROM
Operating current: 30mA
Standby current: 100uA
Package type:
- 28 pin plastic DIP
- 32 pin PLCC
- 28 pin 8 x 13.4mm TSOP(I)
may be used. The MX27C256 supports intelligent fast
programming algorithm which can result in program-
ming time of less than ten seconds.
This EPROM is packaged in industry standard 28 pin
dual-in-line packages, 32 lead PLCC, and 28 lead
TSOP(I) packages.
PIN CONFIGURATIONS
PDIP
PLCC
VPP
A12
A7
A6
A5
A4
A3
A2
A1
A0
Q0
Q1
Q2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 VCC
27 A14
26 A13
25 A8
24 A9
23 A11
22 OE
21 A10
20 CE
19 Q7
18 Q6
17 Q5
16 Q4
15 Q3
4
A6 5
A5
A4
A3
A2 9
A1
A0
NC
Q0 13
14
BLOCK DIAGRAM
1 32
30
29 A8
A9
A11
NC
MX27C256
25 OE
A10
CE
Q7
21 Q6
17 20
CE
OE
A0~A14
ADDRESS
INPUTS
.
.
.
.
.
.
.
.
VCC
GND
CONTROL
LOGIC
Y-DECODER
X-DECODER
VPP
.
.
.
.
.
.
.
.
OUTPUT
BUFFERS
Y-SELECT
256K BIT
CELL
MAXTRIX
Q0~Q7
8 x 13.4mm 28-TSOP(I)
OE
A11
A9
A8
A13
A14
VCC
VPP
A12
A7
A6
A5
A4
A3
22
23
24
25
26
27
28
1
2
3
4
5
6
7
MX27C256
21 A10
20 CE
19 Q7
18 Q6
17 Q5
16 Q4
15 Q3
14 GND
13 Q2
12 Q1
11 Q0
10 A0
9 A1
8 A2
PIN DESCRIPTION
SYMBOL
A0~A14
Q0~Q7
PIN NAME
Address Input
Data Input/Output
CE Chip Enable Input
OE Output Enable Input
VPP Program Supply Voltage
NC
VCC
GND
No Internal Connection
Power Supply Pin (+5V)
Ground Pin
P/N: PM0203
1 REV. 5.6, AUG. 26, 2003

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27C256PC-15 pdf
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SWITCHING TEST CIRCUITS
DEVICE
UNDER
TEST
CL
6.2K ohm
MX27C256
1.8K ohm
+5V
DIODES = IN3064
OR EQUIVALENT
CL = 100 pF including jig capacitance(30pF for 45/55/70ns parts)
SWITCHING TEST WAVEFORMS
AC driving levels
2.0V
0.8V
TEST POINTS
2.0V
0.8V
INPUT
OUTPUT
AC TESTING: AC driving levels are 2.4V/0.4V for commercial grade, 3.0V/0V for industrial grade.
Input pulse rise and fall times are < 10ns.
AC driving levels
1.5V
TEST POINTS
1.5V
INPUT
OUTPUT
AC TESTING: (1) AC driving levels are 3.0V/0V for both commercial grade and industrial grade.
Input pulse rise and fall times are < 10ns.
(2) For MX27C256-45, MX27C256-55, MX27C256-70.
P/N:PM0203
REV.5.6, AUG. 26, 2003
5

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27C256PC-15 arduino
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PACKAGE INFORMATION
MX27C256
P/N:PM0203
REV.5.6, AUG. 26, 2003
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