PRELIMINARY
MX27C4000A
4M-BIT [512K x8] CMOS OTP ROM
FEATURES
• 512K x 8 organization
• Operating current: 40mA
• Standby current: 100uA
• Package type:
- 32 pin PDIP
- 32 pin PLCC
- 32 pin SOP
• Single +5V power supply
• +12.5V programming voltage
• Fast access time: 90/100/120/150 ns
• Totally static operation
• Completely TTL compatible
- 32 pin TSOP
GENERAL DESCRIPTION
programmers may be used. The MX27C4000A
supports a intelligent fast programming algorithm which
canresultinprogrammingtimeoflessthantwominutes.
The MX27C4000A is a 5V only, 4M-bit, One Time
Programmable Read Only Memory. It is organized as
512K words by 8 bits per word, operates from a single
+5volt supply, hasastaticstandby mode, andfeatures
fastsingleaddresslocationprogramming. Allprogram-
mingsignalsareTTLlevels,requiringasinglepulse.For
programmingoutsidefromthesystem,existingEPROM
This One Time Programmable Read Only Memory is
packagedinindustrystandard32pindual-in-lineplastic,
32 lead PLCC, 32 lead SOP, 32 lead TSOP packages.
PIN CONFIGURATIONS
32 PDIP/SOP
32 PLCC
VCC
A18
A17
A14
A13
A8
VPP
A16
A15
A12
A7
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
1
2
3
4
1
32
30
29
A14
A13
A8
5
4
A7
A6
A5
A4
A3
A2
A1
A0
Q0
5
A6
6
A9
A5
7
A9
A11
OE
A10
CE
A4
8
A3
9
A11
OE
A10
CE
Q7
9
25
MX27C4000A
A2
10
11
12
13
14
15
16
A1
Q7
A0
Q6
Q0
Q5
Q1
13
21
20
Q4
Q2
14
17
Q3
GND
32 TSOP
PIN DESCRIPTION
A11
A9
1
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
OE
A10
CE
Q7
Q6
Q5
Q4
Q3
GND
Q2
Q1
Q0
A0
SYMBOL
A0~A18
Q0~Q7
CE
PIN NAME
Address Input
2
A8
3
A13
A14
A17
A18
VCC
VPP
A16
A15
A12
A7
4
5
Data Input/Output
Chip Enable Input
Output Enable Input
6
7
8
MX27C4000A
9
OE
10
11
12
13
14
15
16
VPP
Program Supply Voltage
Power Supply Pin (+5V)
Ground Pin
VCC
A6
A1
A5
A2
GND
A4
A3
P/N: PM00694
REV. 1.6, JUL. 19, 2001
1