MX27L256 Datasheet, PDF (1/14 Pages) Macronix International – 256K-BIT [32Kx8] LOW VOLTAGE OPERATION CMOS EPROM

MX27L256
FEATURES
256K-BIT [32Kx8] LOW VOLTAGE OPERATION
CMOS EPROM
• 32K x 8 organization
• Wide Voltage range, 2.7V to 3.6V DC
• +12.5V programming voltage
• Fast access time: 120/150/200/250 ns
• Totally static operation
GENERAL DESCRIPTION
• Completely TTL compatible
• Operating current: 10mA @ 3.6V, 5MHz
• Standby current: 10uA
• Package type:
- 28 pin plastic DIP
- 32 pin PLCC
- 28 pin 8 x 13.4mm TSOP(I)
The MX27L256 is a 256K-bit, One-Time Programmable
Read Only Memory. It is organized as 32K by 8 bits,
operates from a single + 3volt 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 may be
used. The MX27L256 supports intelligent fast program-
ming algorithm which can result in programming 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
BLOCK DIAGRAM
PDIP
VPP 1
A12 2
A7 3
A6 4
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
Q0 11
Q1 12
Q2 13
GND 14
PLCC
CE
28 VCC
27 A14
26 A13
25 A8
24 A9
23 A11
22 OE
21 A10
20 CE
19 Q7
18 Q6
17 Q5
4
A6 5
A5
A4
A3
A2 9
A1
A0
NC
OE
1 32
30
29 ^A8
A9
.
A11
.
NC
.
MX27L256
25 OE
A0~A14
ADDRESS
.
.
A10
INPUTS
.
CE
.
Q7
.
16 Q4
Q0 ¹³
21 Q6
15 Q3
14
17
20
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
22
A11
23
A9
24
A8
25
A13
26
A14
27
VCC
28
VPP
1
A12
2
A7
3
A6
4
A5
5
A4
6
A3
7
MX27L256
PIN DESCRIPTION
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
SYMBOL
A0~A14
Q0~Q7
CE
OE
VPP
NC
VCC
GND
PIN NAME
Address Input
Data Input/Output
Chip Enable Input
Output Enable Input
Program Supply Voltage
No Internal Connection
Power Supply Pin
Ground Pin
P/N: PM0248
REV. 3.6, AUG. 26, 2003
1