FINAL Am27X2048 2 Megabit (128 K x 16-Bit) CMOS ExpressROM Device DISTINCTIVE CHARACTERISTICS ■ ±10% power supply tolerance ■ As an OTP EPROM alternative: — Factory optimized programming ■ High noise immunity — Fully tested and guaranteed ■ Low power dissipation — 100 µA maximum CMOS standby current ■ As a Mask ROM alternative: ■ Available in Plastic Dual-In-line Package (PDIP) and Plastic Leaded Chip Carrier (PLCC) — Shorter leadtime — Lower volume per code ■ Latch-up protected to 100 mA from –1 V to VCC + 1 V ■ Fast access time — 70 ns ■ Versatile features for simple interfacing ■ Single +5 V power supply — Both CMOS and TTL input/output compatibility ■ Compatible with JEDEC-approved EPROM pinout — Two line control functions GENERAL DESCRIPTION The Am27X2048 is a factory programmed and tested OTP EPROM. It is programmed after packaging prior to final test. Every device is rigorously tested under AC and DC operating conditions to your stable code. It is organized as 128 Kwords by 16 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. 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 125 mW in active mode, and 100 µW in standby mode. BLOCK DIAGRAM VCC Data Outputs DQ0–DQ15 VSS OE# CE# A0–A16 Address Inputs Output Enable Chip Enable and Prog Logic Output Buffers Y Decoder Y Gating X Decoder 2,097,152 Bit Cell Matrix 15653D-1 Publication# 15653 Rev: D Amendment/0 Issue Date: May 1998 PRODUCT SELECTOR GUIDE Family Part Number Am27X2048 VCC = 5.0 V ± 5% Speed Options VCC = 5.0 V ± 10% -255 -70 -90 -120 -150 -200 Max Access Time (ns) 70 90 120 150 200 250 CE# (E#) Access (ns) 70 90 120 150 200 250 OE# (G#) Access (ns) 40 40 50 65 75 75 CONNECTION DIAGRAMS DQ15 3 38 A16 DQ15 CE (E) VPP DU (Note 2) DQ14 4 37 A15 6 5 4 3 2 1 44 43 42 41 40 DQ13 5 36 A14 DQ12 7 39 A13 DQ12 6 35 A13 DQ11 8 38 A12 DQ11 7 34 A12 DQ10 9 37 A11 DQ10 8 33 A11 DQ9 10 36 A10 DQ9 9 32 A10 DQ8 11 35 A9 A9 VSS 12 34 VSS NC 13 33 NC DQ8 10 31 A14 PGM# (P#) A15 VCC 39 A16 40 2 PGM# (P#) 1 VCC VPP CE# (E#) DQ14 PLCC DQ13 DIP A7 DQ5 16 30 A6 DQ4 29 17 18 19 20 21 22 23 24 25 26 27 28 A5 14 28 27 A6 DQ4 15 26 A5 DQ3 16 25 A4 DQ2 17 24 A3 DQ1 18 23 A2 DQ0 19 22 A1 OE# (G#) 20 21 A0 DQ3 DQ5 13 A4 A7 DQ6 A3 A8 31 A2 32 15 A1 14 DQ6 A0 DQ7 DU (Note 2) A8 OE# (G#) VSS 29 DQ0 30 12 DQ1 11 DQ2 VSS DQ7 15653D-3 15653D-2 Notes: 1. JEDEC nomenclature is in parenthesis. 2. Don’t use (DU) for PLCC. PIN DESIGNATIONS A0–A16 = Address Inputs CE# (E#) = Chip Enable Input LOGIC SYMBOL 17 OE# (G#) = Output Enable Input PGM# (P#) = Program Enable Input VCC = VCC Supply Voltage VPP = Program Voltage Input VSS = Ground NC = No Internal Connection 2 16 A0–A16 DQ0–DQ15 = Data Input/Outputs DQ0–DQ15 CE# (E#) OE# (G#) 15653D-4 Am27X2048 ORDERING INFORMATION Standard Products AMD standard products are available in several packages and operating ranges. The order number (Valid Combination) is formed by a combination of the following: AM27X2048 -70 J C XXXXX CODE DESIGNATION Assigned by AMD TEMPERATURE RANGE C = Commercial (0°C to +70°C) I = Industrial (–40°C to +85°C) PACKAGE TYPE P = 40-Pin Plastic Dual In-Line Package (PD 040) J = 44-Pin Plastic Leaded Chip Carrier (PL 044) SPEED OPTION See Product Selector Guide and Valid Combinations DEVICE NUMBER/DESCRIPTION Am27X2048 2 Megabit (128 K x 16-Bit) CMOS ExpressROM Device Valid Combinations 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. AM27X2048-70 AM27X2048-90 AM27X2048-120 AM27X2048-150 PC, JC, PI, JI AM27X2048-200 AM27X2048-255 VCC = 5.0 V ± 5% Am27X2048 3 FUNCTIONAL DESCRIPTION Read Mode CE# should be decoded and used as the primary device-selecting function, while OE# be made a common connection to all devices in the array and connected to the READ line from the system control bus. This assures that all deselected memory devices are in their low-power standby mode and that the output pins are only active when data is desired from a particular memory device. To obtain data at the device outputs, Chip Enable (CE#) and Output Enable (OE#) must be driven low. CE# controls the power to the device and is typically used to select the device. OE# enables the device to output data, independent of device selection. Addresses must be stable for at least t ACC –t OE. Refer to the Switching Waveforms section for the timing diagram. System Applications Standby Mode During the switch between active and standby conditions, transient current peaks are produced on the rising and falling edges of Chip Enable. The magnitude of these transient current peaks is dependent on the output capacitance loading of the device. At a minimum, a 0.1 µF ceramic capacitor (high frequency, low inherent inductance) should be used on each device between VCC and VSS to minimize transient effects. In addition, to overcome the voltage drop caused by the inductive effects of the printed circuit board traces on ExpressROM device arrays, a 4.7 µF bulk electrolytic capacitor should be used between VCC and VSS for each eight devices. The location of the capacitor should be close to where the power supply is connected to the array. The device enters the CMOS standby mode when CE# is at VCC ± 0.3 V. Maximum VCC current is reduced to 100 µA. The device enters the TTL-standby mode when CE# is at VIH. Maximum VCC current is reduced to 1.0 mA. When in either standby mode, the device places its outputs in a high-impedance state, independent of the OE# input. Output OR-Tieing To accommodate multiple memory connections, a two-line control function provides: ■ Low memory power dissipation, and ■ Assurance that output bus contention will not occur. MODE SELECT TABLE Mode CE# OE# PGM# VPP Outputs Read VIL VIL X X DOUT Output Disable X VIH X X High Z Standby (TTL) VIH X X X High Z VCC ± 0.3 V X X X High Z Standby (CMOS) Note: X = Either VIH or VIL. 4 Am27X2048 ABSOLUTE MAXIMUM RATINGS OPERATING RANGES Storage Temperature OTP Products. . . . . . . . . . . . . . . . . . –65°C to +125°C Ambient Temperature with Power Applied. . . . . . . . . . . . . . –55°C to +125°C Commercial (C) Devices Ambient Temperature (TA) . . . . . . . . . . .0°C to +70°C Industrial (I) Devices Voltage with Respect to VSS All pins except VCC . . . . . . . . . –0.6 V to VCC + 0.6 V Ambient Temperature (TA) . . . . . . . . .–40°C to +85°C VCC (Note 1). . . . . . . . . . . . . . . . . . . . . –0.6 V to 7.0 V VCC for ± 5% devices . . . . . . . . . . +4.75 V to +5.25 V VCC for ± 10% devices . . . . . . . . . +4.50 V to +5.50 V Note: 1. Minimum DC voltage on input or I/O pins –0.5 V. During voltage transitions, the input may overshoot VSS to –2.0 V for periods of up to 20 ns. Maximum DC voltage on input and I/O pins is VCC + 5 V. During voltage transitions, input and I/O pins may overshoot to VCC + 2.0 V for periods up to 20 ns. Supply Read Voltages Operating ranges define those limits between which the functionality of the device is guaranteed. Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure of the device to absolute maximum ratings for extended periods may affect device reliability. Am27X2048 5 DC CHARACTERISTICS over operating range (unless otherwise specified) Parameter Symbol Parameter Description Test Conditions VOH Output HIGH Voltage IOH = –400 µA VOL Output LOW Voltage IOL = 2.1 mA VIH Input HIGH Voltage VIL Input LOW Voltage ILI Input Load Current ILO Min Max Unit 2.4 V 0.45 V 2.0 VCC + 0.5 V –0.5 +0.8 V VIN = 0 V to VCC 1.0 µA Output Leakage Current VOUT = 0 V to VCC 5.0 µA ICC1 VCC Active Current (Note 2) CE# = VIL, f = 10 MHz, IOUT = 0 mA 50 mA ICC2 VCC TTL Standby Current CE# = VIH 1.0 mA ICC3 VCC CMOS Standby Current CE# = VCC ± 0.3 V 100 µA Caution: The device must not be removed from (or inserted into) a socket when VCC or VPP is applied. Notes: 1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP.. 30 30 25 25 Supply Current in mA Supply Current in mA 2. ICC1 is tested with OE# = VIH to simulate open outputs. 3. Minimum DC Input Voltage is –0.5 V. During transitions, the inputs may overshoot to –2.0 V for periods less than 20 ns. Maximum DC Voltage on output pins is VCC + 0.5 V, which may overshoot to VCC + 2.0 V for periods less than 20 ns. 20 15 Figure 1. 6 2 3 4 5 6 7 Frequency in MHz 8 9 15 10 –75 –50 –55 0 25 50 75 100 125 150 Temperature in °C 10 1 20 10 15653D-5 15653D-6 Typical Supply Current vs. Frequency VCC = 5.5 V, T = 25°C Figure 2. Typical Supply Current vs. Temperature VCC = 5.5 V, f = 10 MHz Am27X2048 TEST CONDITIONS Table 1. 5.0 V Test Specifications Test Condition 2.7 kΩ Device Under Test CL Output Load Unit 1 TTL gate Output Load Capacitance, CL (including jig capacitance) 100 pF Input Rise and Fall Times ≤ 20 ns Input Pulse Levels 0.45–2.4 V Input timing measurement reference levels 0.8, 2.0 V Output timing measurement reference levels 0.8, 2.0 V 6.2 kΩ Note: Diodes are IN3064 or equivalents. All 15653D-7 Figure 3. Test Setup SWITCHING TEST WAVEFORM 2.4 V 2.0 V 2.0 V Test Points 0.8 V 0.8 V 0.45 V Input Output Note: For CL = 100 pF. 15653D-8 KEY TO SWITCHING WAVEFORMS WAVEFORM INPUTS OUTPUTS Steady Changing from H to L Changing from L to H Don’t Care, Any Change Permitted Changing, State Unknown Does Not Apply Center Line is High Impedance State (High Z) KS000010-PAL Am27X2048 7 AC CHARACTERISTICS Parameter Symbols JEDEC Standard tAVQV tACC tELQV Am27X2048 Description Test Setup -70 -90 -120 -150 -200 -255 Unit Address to Output Delay CE#, Max OE# = VIL 70 90 120 150 200 250 ns tCE Chip Enable to Output Delay OE# = VIL Max 70 90 120 150 200 250 ns tGLQV tOE Output Enable to Output Delay CE# = VIL Max 40 40 50 65 75 75 ns tEHQZ tGHQZ tDF (Note 2) Chip Enable High or Output Enable High to Output High Z, Whichever Occurs First Max 25 25 30 30 40 60 ns tAXQX tOH Output Hold Time from Addresses, CE# or OE#, Whichever Occurs First Min 0 0 0 0 0 0 ns Caution: Do not remove the device from (or insert it into) a socket or board that has VPP or VCC applied. Notes: 1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP. 2. This parameter is sampled and not 100% tested. 3. Switching characteristics are over operating range, unless otherwise specified. 4. See Figure 3 and Table 1 for test specifications. SWITCHING WAVEFORMS 2.4 Addresses 0.45 2.0 0.8 2.0 0.8 Addresses Valid CE# tCE OE# tDF (Note 2) tOE High Z Output tACC (Note 1) tOH High Z Valid Output 15653D-9 Notes: 1. OE# may be delayed up to tACC – tOE after the falling edge of the addresses without impact on tACC. 2. tDF is specified from OE# or CE#, whichever occurs first. PACKAGE CAPACITANCE Parameter Symbol CIN COUT PD 040 Parameter Description Test Conditions Typ Max Typ Max Unit Input Capacitance VIN = 0 10 12 7 10 pF Output Capacitance VOUT = 0 12 15 12 14 pF Notes: 1. This parameter is only sampled and not 100% tested. 2. TA = +25°C, f = 1 MHz. 8 PL 044 Am27X2048 PHYSICAL DIMENSIONS PD 040—40-Pin Plastic Dual In-Line Package (measured in inches) 2.040 2.080 .600 .625 21 40 .008 .015 .530 .580 Pin 1 I.D. .630 .700 20 .045 .065 0° 10° .005 MIN .140 .225 16-038-SC_AF PD 040 DG76 2-28-95 ae SEATING PLANE .090 .110 .120 .160 .014 .022 .015 .060 PL 044—44-Pin Plastic Leaded Chip Carrier (measured in inches) .685 .695 .650 .656 .042 .056 .062 .083 Pin 1 I.D. .685 .695 .650 .656 .500 .590 REF .630 .013 .021 .026 .032 .050 REF .009 .015 TOP VIEW .090 .120 .165 .180 SEATING PLANE SIDE VIEW Am27X2048 16-038-SQ PL 044 EC80 11.3.97 lv 9 REVISION SUMMARY FOR AM27X2048 Revision F Global Changed formatting to match current data sheets. Product Selector Guide OE# (G#) Access (ns): Corrected -90 speed option to 40 from 4. Absolute Maximum Ratings Storage Temperature: Removed “All Other Products ... –65°C to +150°C”. Trademarks Copyright © 1998 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD logo, and combinations thereof are trademarks of Advanced Micro Devices, Inc. Flashrite is a trademark of Advanced Micro Devices, Inc. Product names used in this publication are for identification purposes only and may be trademarks of their respective companies. 10 Am27X2048