AM27X64-90PI
Table of contents
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FINAL
Am27X64
64 Kilobit (8 K x 8-Bit) CMOS ExpressROM Device
DISTINCTIVE CHARACTERISTICS
■ As an OTP EPROM alternative:
— Factory optimized programming
— Fully tested and guaranteed
■ As a Mask ROM alternative:
— Shorter leadtime
— Lower volume per code
■ Fast access time
— 55 ns
■ Single +5 V power supply
■ Compatible wit h JEDEC-approved EPROM
pinout
■ ±10% power supply tolerance
■ High noise immunity
■ Low power dissipation
— 100 µA maximum CMOS standby current
■ Av ailable in Plastic Dual-In-line Package (PDIP)
and Plastic Leaded Chip Carrier (PLCC)
■ Latch-up protected to 100 mA from –1 V to
+ 1 V
V
CC
■ Versatile features for simple interfacing
— Both CMOS and TTL input/output compatibility
— Two line control functions
GENERAL DESCRIPTION
The Am27X64 is a factory programmed and tested
OTP EPROM. It is progra mmed after pac kaging prior to
final test. Every device is rigorously tested under AC
and DC operating conditions to your stable code. It is
organized as 8 Kwords by 8 bits per word and is available in plastic dual in-line packages (PDIP), as well as
plastic leaded chip carrier (PLCC) packages. ExpressROM devices provide a board-ready memory solution
for medium to high volume codes with short leadtimes.
This offers manufacturers a cost-effective and flexible
alternative to OTP EPROMs and mask programmed
ROMs.
BLOCK DIAGRAM
V
CC
V
SS
OE#
CE#
A0–A12
Address
Inputs
Output Enable
Chip Enable
and
Prog Logic
Y
Decoder
X
Decoder
Data can be accessed as fast as 55 ns, allowing
high-performance microprocessors to operate with reduced WAIT states. The device offers separate Output
Enable (OE#) and Chip Enable (CE#) controls, thus
eliminating bus contention in a multiple bus microprocessor system.
AMD’s CMOS process technology provides high
speed, low power, and high noise immunity. Typical
power consumption is only 80 mW in active mode , and
100 µW in standby mode.
Data Outputs DQ0–DQ7
Output
Buffers
Y
Gating
65,538
Bit Cell
Matrix
12084F-1
Publication# 12084 Rev: F Amendment/0
Issue Date: May 1998
PRODUCT SELECTOR GUIDE
Family Part Number Am27X64
= 5.0 V ± 5% -255
V
Speed Options
Max Access Time (ns) 55 70 90 120 150 200 250
CE# (E#) Access (ns) 55 70 90 120 150 200 250
OE# (G#) Access (ns) 35 40 40 50 50 50 50
CC
= 5.0 V ± 10% -55 -70 -90 -120 -150 -200
V
CC
CONNECTION DIAGRAMS
Top View
DIP PLCC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
CC
PGM# (P#)
NC
A8
A9
A11
OE# (G#)
A10
CE# (E#)
DQ7
DQ6
DQ5
DQ4
DQ3
12084F-2
A6
A5
A4
A3
A2
A1
A0
NC
DQ0
5
6
7
8
9
10
11
12
13
14
A7
15
DQ1
A12
DQ2
PP
CC
PGM# (P#)
DU
V
13130234
32
17
18
SS
DU
V
V
19 2016
DQ3
DQ4
NC
29
28
27
26
25
24
23
22
21
DQ5
A8
A9
A11
NC
OE# (G#)
A10
CE# (E#)
DQ7
DQ6
12084F-3
V
PP
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Notes:
1. JEDEC nomenclature is in parenthesis.
2. Don’t use (DU) for PLCC.
PIN DESIGNATIONS
LOGIC SYMBOL
A0–A12 = Address Inputs
CE# (E#) = Chip Enable Input
DQ0–DQ7 = Data Input/Outputs
OE# (G#) = Output Enable Input
PGM# (P#) = Program Enable Input
V
CC
V
PP
V
SS
=VCC Supply Voltage
= Program Voltage Input
= Ground
NC = No Internal Connection
2 Am27X64
13
A0–A12
CE# (E#)
OE# (G#)
8
DQ0–DQ7
12084F-4
ORDERING INFORMATION
Standard Pr od ucts
AMD standard products are available in several packages and operating ranges. The order number (Valid Combination) is formed
by a combination of the following:
AM27X64
-55 J C
DEVICE NUMBER/DESCRIPTION
Am27X64
64 Kilobit (8 K x 8-Bit) CMOS ExpressROM Device
XXXXX
CODE DESIGNATION
Assigned by AMD
TEMPERATURE RANGE
C = Commercial (0°C to +70
I=Industrial (–40
PACKAGE TYPE
P = 28-Pin Plastic Dual In-Line Package (PD 028)
J = 32-Pin Plastic Leaded Chip Carrier (PL 032)
SPEED OPTION
See Product Selector Guide and Valid Combinations
°C to +85°C)
°C)
AM27X64-55
AM27X64-70
AM27X64-90
AM27X64-120
AM27X64-150
AM27X64-200
AM27X64-255
= 5.0 V ± 5%
V
CC
Valid Combinations
PC, JC, PI, JI
Valid Combinations
Valid Combinations list configurations planned to be supported in volume for this device. Consult the local AMD sales
office to confirm availability of specific valid combinations and
to check on newly released combinations.
Am27X64 3
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