AM27C256-90JI Advanced Micro Devices, AM27C256-90JI Datasheet
AM27C256-90JI
Related parts for AM27C256-90JI
AM27C256-90JI Summary of contents
Page 1
... Flashrite™ programming — Typical programming time of 4 seconds GENERAL DESCRIPTION The Am27C256 is a 256-Kbit, ultraviolet erasable pro- grammable read-only memory organized as 32K words by 8 bits per word, operates from a single +5 V supply, has a static standby mode, and features fast single address location programming ...
Page 2
... V CC A14 A6 A13 A11 A2 OE# (G#) A1 A10 A0 CE# (E#) NC DQ7 DQ0 DQ6 DQ5 DQ4 DQ3 08007I-2 LOGIC SYMBOL 15 Am27C256 -255 -120 -150 -200 120 150 200 120 150 200 PLCC A11 ...
Page 3
... AM27C256 -45 D DEVICE NUMBER/DESCRIPTION Am27C256 256 Kilobit ( 8-Bit) CMOS UV EPROM Valid Combinations AM27C256-45 DC, DCB, DI, DIB AM27C256-55 AM27C256-70 AM27C256-90 AM27C256-120 DC, DCB, DI, DIB, DE, DEB AM27C256-150 AM27C256-200 AM27C256-255 DC, DCB, DI, DIB OPTIONAL PROCESSING Blank = Standard Processing B TEMPERATURE RANGE C = Commercial ( + Industrial (– ...
Page 4
... AMD standard products are available in several packages and operating ranges. The order number (Valid Combination) is formed by a combination of the following: AM27C256 -55 P Valid Combinations AM27C256-55 AM27C256-70 AM27C256-90 AM27C256-120 JC, PC, JI, PI AM27C256-150 AM27C256-200 AM27C256-255 4 C OPTIONAL PROCESSING Blank = Standard Processing TEMPERATURE RANGE C = Commercial ( + Industrial (– +85 C) PACKAGE TYPE P = 28-Pin Plastic DIP (PD 028) ...
Page 5
... Low memory power dissipation, and Assurance that output bus contention will not occur. CE# should be decoded and used as the primary de- vice-selecting function, while OE# be made a common Am27C256 0.25 V and OE# HIGH will program , CE address line A9. Two identifier bytes ...
Page 6
... voltage during programming. PP Am27C256 for each eight devices. The loca Outputs OUT X X High High High OUT ...
Page 7
... V to +5. for ± 10% devices . . . . . . . . . +4. +5. Operating ranges define those limits between which the func- tionality of the device is guaranteed. to –2 2.0 V for periods up to –2.0 V for SS Am27C256 ) . . . . . . . . . . . + .– + .– +125 ...
Page 8
... CE 0 CE and removed simultaneously or after 0.5 V, which may overshoot –75 –50 – 08007I-5 Figure 2. Typical Supply Current vs. Temperature Am27C256 Min Max 2.4 0.45 2 0.5 CC –0.5 +0.8 1.0 C/I Devices 1.0 E Devices 5.0 25 1.0 100 100 applied ...
Page 9
... Output timing measurement reference levels 08007I-7 2.4 V 1.5 V 0.45 V Output Note: For C = 100 pF. L INPUTS Steady Changing from Changing from Does Not Apply Center Line is High Impedance State (High Z) Am27C256 -45, -55 All and -70 others 1 TTL gate L 30 100 20 0.0–3.0 0.45–2.4 1.5 0.8, 2.0 1.5 0.8, 2.0 2 ...
Page 10
... Addresses Valid 0 ACC (Note 1) after the falling edge of the addresses without impact CDV028 Test Conditions Typ OUT Am27C256 Am27C256 -55 -70 -90 -120 -150 -200 -255 120 150 200 250 120 150 200 250 ...
Page 11
... BSC SIDE VIEW 15 .530 .580 14 SEATING PLANE .015 .014 .060 .022 Am27C256 DATUM D .700 CENTER PLANE MAX 94 105 .300 BSC .600 BSC END VIEW 16-000038H-3 CDV028 DF10 3-30-95 ae .600 .625 .008 .015 .630 ...
Page 12
... SEATING PLANE .013 .021 .050 REF. Ordering Information UV EPROM Products: Added the AM27C256-45 Valid Combination. Test Conditions Table 1. Test Specifications: Added the -45 speed op- tion. AC Characteristics Added the -45 speed option. Am27C256 .042 .056 .400 REF. .490 ...