AMD Advanced Micro Devices AM27X512-255PC, AM27X512-255JI, AM27X512-255JC, AM27X512-200PI, AM27X512-200PC Datasheet
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FINAL
Am27X512
512 Kilobit (64 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
— 70 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 Pac kage (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 Am27X512 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 64 Kwords by 8 bits per word and is av ailable 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–A15
Address
Inputs
Output Enable
Chip Enable
and
Prog Logic
Y
Decoder
X
Decoder
Data can be accessed as fast as 70 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
524,288
Bit Cell
Matrix
12081F-1
Publication# 12081 Rev: F Amendment/0
Issue Date: May 1998
PRODUCT SELECTOR GUIDE
Family Part Number Am27X512
= 5.0 V ± 5% -255
V
Speed Options
Max Access Time (ns) 70 90 120 150 200 250
CE# (E#) Access (ns) 70 90 120 150 200 250
OE# (G#) Access (ns) 70 40 50 65 75 100
CC
= 5.0 V ± 10% -70 -90 -120 -150 -200
V
CC
CONNECTION DIAGRAMS
Top View
DIP PLCC
A15
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
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Notes:
1. JEDEC nomenclature is in parenthesis.
2. Don’t use (DU) for PLCC.
V
CC
A14
A13
A8
A9
A11
OE# (G#)/V
A10
CE# (E#)
DQ7
DQ6
DQ5
DQ4
DQ3
12081F-2
PP
A6
A5
A4
A3
A2
A1
A0
NC
DQ0
5
6
7
8
9
10
11
12
13
14
A7
15
DQ1
A12
DQ2
A15
SS
V
17
13130234
DU
DU
18
32
DQ3
CC
A14
A13
V
A8
29
A9
28
A11
27
NC
26
OE# (G#)/V
19 2016
DQ4
25
24
23
22
21
DQ5
A10
CE# (E#)
DQ7
DQ6
PP
12081F-3
PIN DESIGNATIONS
LOGIC SYMBOL
A0–A15 = 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 Am27X512
16
A0–A15
CE# (E#)
OE# (G#)
8
DQ0–DQ7
12081F-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:
AM27X512
-70 J C
DEVICE NUMBER/DESCRIPTION
Am27X512
512 Kilobit (64 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)
AM27X512-70
AM27X512-90
AM27X512-120
AM27X512-150
AM27X512-200
AM27X512-255
= 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.
Am27X512 3
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