MX27C512
512K-BIT [64Kx8] CMOS EPROM
FEATURES
• 64K x 8 organization
• Operating current: 30mA
• Single +5V power supply
• Standby current: 100uA
• +12.5V programming voltage
• Fast access time: 45/55/70/90/100/120/150ns
• Totally static operation
• Package type:
- 28 pin plastic DIP
- 32 pin PLCC
- 28 pin 8 x 13.4 mm TSOP(I)
• Completely TTL compatible
GENERAL DESCRIPTION
The MX27C512 is a 5V only, 512K-bit, ultraviolet Eras-
ableProgrammableReadOnlyMemory. Itisorganized
as 64K words by 8 bits per word, operates from a single
+5volt supply, has a static standby mode, and features
fastsingleaddresslocationprogramming. Allprogram-
mingsignalsareTTLlevels,requiringasinglepulse.For
programmingoutsidefromthesystem,existingEPROM
programmers may be used. The MX27C512 supports
intelligent fast programming algorithm which can result
in programming time of less than fifteen 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
PLCC
PDIP
CONTROL
LOGIC
OUTPUT
CE
Q0~Q7
BUFFERS
OE/VPP
VCC
A14
A13
A8
A15
A12
A7
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
4
5
1
32
30
29
A8
A6
A5
A4
A3
A2
A1
A0
NC
Q0
3
A6
4
A9
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
A9
A5
5
Y-DECODER
X-DECODER
Y-SELECT
A11
NC
A11
OE/VPP
A10
CE
A4
6
A3
7
A0~A15
A2
8
OE/VPP
A10
CE
9
25
MX27C512
512K BIT
CELL
ADDRESS
INPUTS
A1
9
Q7
A0
10
11
12
13
14
MAXTRIX
Q6
Q0
Q1
Q2
GND
Q5
Q7
Q4
13
14
Q6
21
Q3
17
20
VCC
GND
PIN DESCRIPTION
SYMBOL PIN NAME
8 x 13.4mm 28TSOP(I)
OE/VPP
A11
A9
22
23
24
25
26
27
28
1
21
A10
CE
Q7
Q6
Q5
Q4
Q3
20
19
18
17
16
15
14
13
12
11
10
9
A0~A15
Q0~Q7
CE
Address Input
Data Input/Output
Chip Enable Input
A8
A13
A14
VCC
A15
A12
A7
OE/VPP
Output Enable Input/Program Supply
Voltage
MX27C512
GND
Q2
Q1
Q0
A0
2
3
NC
No Internal Connection
Power Supply Pin (+5V)
Ground Pin
A6
4
A5
5
VCC
GND
A4
6
A1
A3
7
8
A2
P/N: PM0235
REV. 4.5, NOV. 09, 2001
1