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Part: 27C512A-90I/TS
Category:
Memory
Description:
Company: Microchip Technology, Inc.
Datasheet: Download 27C512A-90I/TS datasheet File size : 901 kB
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Datasheet text preview:
27C512A
512K (64K x 8) CMOS EPROM
FEATURES
· High speed performance · CMOS Technology for low power consumption - 25 mA Active current - 30 µA Standby current · Factory programming available · Auto-inser tion-compatible plastic packages · Auto ID aids automated programming · High speed express programming algorithm · Organized 64K x 8: JEDEC standard pinouts - 28-pin Dual-in-line package - 32-pin PLCC Package - 28-pin SOIC package - Tape and reel · Data Retention > 200 years · Available for the following temperature ranges - Commercial: 0°C to +70°C - Industrial: -40°C to +85°C - Automotive: -40°C to +125°C
PACKAGE TYPES
A7 A12 A15 NU Vc c A14 A13
32 31
PLCC
A6 A5 A4 A3 A2 A1 A0 NC O0
5 6
30
4
3
2
1
29 28
8 9 10 11 12 13 14 15
27C512A
7
27 26 25 24 23 22 21
A8 A9 A11 NC OE/VPP A10 CE O7 O6
16
17
18
19
DIP/SOIC
A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 O0 O1 O2 VSS 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
VCC A14 A13 A8 A9 A11 OE/VPP A10 CE O7 O6 O5 O4 O3
DESCRIPTION
The Microchip Technology Inc. 27C512A is a CMOS 512K bit electrically Programmable Read Only Memory (EPROM). The device is organized into 64K words by 8 bits (64K bytes). Accessing individual bytes from an address transition or from power-up (chip enable pin going low) is accomplished in less than 90 ns. This very high speed device allows the most sophisticated microprocessors to run at full speed without the need for WAIT states. CMOS design and processing enables this part to be used in systems where reduced power consumption and high reliability are requirements. A complete family of packages is offered to provide the most flexibility in applications. For surface mount applications, PLCC or SOIC packaging is available. Tape or reel packaging is also available for PLCC or SOIC packages.
© 1998 Microchip Technology Inc.
27C512A
O1 O2 VSS NU O3 O4 O5
20
DS11173F-page 1
27C512A
1.0
1.1
ELECTRICAL CHARACTERISTICS
Maximum Ratings*
TABLE 1-1:
Name A0-A15 CE OE/VPP O0 - O7 VCC VSS NC NU
PIN FUNCTION TABLE
Function Address Inputs Chip Enable Output Enable/Programming Voltage Data Output +5V Power Supply Ground No Connection; No Internal Connection Not Used; No External Connection is Allowed
VCC and input voltages w.r.t. VSS ........ -0.6V to +7.25V VPP voltage w.r.t. VSS during programming ........ -0.6V to +14V Voltage on A9 w.r.t. VSS ..... -0.6V to +13.5V Output voltage w.r.t. VSS ........-0.6V to VCC +1.0V Storage temperature .. -65°C to +150°C Ambient temp. with power applied...... -65°C to +125°C
*Notice: Stresses above those listed under "Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.
TABLE 1-2:
READ OPERATION DC CHARACTERISTICS
VCC = +5V ±10% Commercial: Industrial: Extended (Automotive): Tamb = 0°C to +70°C Tamb = -40°C to +85°C Tamb = -40°C to +125°C Units V V µA V V µA pF pF mA mA VIN = 0 to VCC IOH = - 400 µA IOL = 2.1 mA VOUT = 0V to VCC VIN = 0V; Tamb = 25°C; f = 1 MHz VOUT = 0V; Tamb = 25°C; f = 1 MHz VCC = 5.5V f = 1 MHz; OE/VPP = CE = VIL; IOUT = 0 mA; VIL = -0.1 to 0.8V; VIH = 2.0 to VCC; Note 1 Conditions
Parameter Input Voltages Input Leakage Output Voltages Output Leakage Input Capacitance Output Capacitance Power Supply Current, Active
Part* all all all all all all C I, E
Status Logic "1" Logic "0"
Symbol VIH VIL ILI
Min 2.0 -0.5 -10 2.4
Max VCC+1 0.8 10 0.45
Logic "1" Logic "0" -- -- -- TTL input TTL input
VOH VOL ILO CIN COUT ICC ICC
-10 -- -- -- --
10 6 12 25 35
Power Supply Current, Standby
C I, E all
TTL input ICC(S)TLL TTL input ICC(S)TLL CMOS input ICC(S)CMOS
-- -- --
1 2 30
mA mA µA
CE = Vcc±0.2V
* Parts: C=Commercial Temperature Range; I, E=Industrial and Extended Temperature Ranges
Note 1: Typical active current increases .75 mA per MHz up to operating frequency for all temperature ranges.
DS11173F-page 2
© 1998 Microchip Technology Inc.
27C512A
TABLE 1-3: READ OPERATION AC CHARACTERISTICS
AC Testing Waveform: Output Load: Input Rise and Fall Times: Ambient Temperature: VIH = 2.4V and VIL = .45V; 1 TTL Load + 100 pF 10 ns Commercial: Industrial: Extended (Automotive): 27C512-12 Min -- -- -- 0 0 Max 120 120 50 40 -- VOH = 2.0V and VOL = 0.8V
Tamb = 0°C to +70°C Tamb = -40°C to +85°C Tamb = -40°C to +125°C 27C512-15 Units Conditions Min -- -- -- 0 0 Max 150 150 60 45 -- ns ns ns ns ns CE = OE/ VPP = VIL OE/VPP = VIL CE = VIL
27C512-90* Parameter Address to Output Delay CE to Output Delay OE to Output Delay OE to Output High Impedance Output Hold from Address, CE or OE/ VPP, whichever occurred first Sym Min tACC tCE tOE tOFF tOH -- -- -- 0 0 Max 90 90 40 35 --
27C512-10* Min -- -- -- 0 0 Max 100 100 40 35 --
*90/10 AC Testing Waveforms: VIH = 3.0V and VIL = 0V; VOH = 1.5V and VOL = 1.5V Output Load: 1 TTL Load + 30 pF
FIGURE 1-1:
VIH Address VIL VIH CE VIL
READ WAVEFORMS
Address Valid
t CE(2)
VIH OE VIL VOH VOL t ACC t OE(2) High Z t OFF(1,3) t OH Valid Output High Z
Outputs O0 - O7
Notes: (1) tOFF is specified for OE or CE, whichever occurs first (2) OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE (3) This parameter is sampled and is not 100% tested.
© 1998 Microchip Technology Inc.
DS11173F-page 3
27C512A
TABLE 1-4: PROGRAMMING DC CHARACTERISTICS
Ambient Temperature: Tamb = 25°C ± 5°C VCC = 6.5V ± 0.25V, OE/VPP = VH = 13.0V ± 0.25V Parameter Input Voltages Input Leakage Output Voltages VCC Current, program & verify OE/VPP Current, program A9 Product Identification Status Logic "1" Logic "0" -- Logic "1" Logic "0" -- -- -- Symbol VIH VIL ILI VOH VOL ICC2 IPP2 VID Min. 2.0 -0.1 -10 2.4 -- -- -- 11.5 Max. VCC+1 0.8 10 0.45 35 25 12.5 Units V V µA V V mA mA V VIN = 0V to VCC IOH = -400 µA IOL = 2.1 mA CE = VIL Conditions (See Note 1)
Note 1: VCC must be applied simultaneously or before VPP voltage on OE/VPP and removed simultaneously or after the VPP voltage on OE/VPP.
TABLE 1-5:
PROGRAMMING AC CHARACTERISTICS
AC Testing Waveform: VIH=2.4V and VIL=0.45V; VOH=2.0V; VOL=0.8V Ambient Temperature: 25°C ±5°C VCC = 6.5V ± 0.25V, OE/VPP = VH = 13.0V ± 0.25 V Symbol tAS tDS tDH tAH tDF tVCS tPW tCES tOES tOEH tOR tPRT Min. 2 2 2 0 0 2 95 2 2 2 2 50 Max. -- -- -- -- 130 -- 105 -- -- -- -- -- Units µs µs µs µs ns µs µs µs µs µs µs ns 100 µs typical Remarks
for Program, Program Verify and Program Inhibit Modes Parameter Address Set-Up Time Data Set-Up Time Data Hold Time Address Hold Time Float Delay (2) VCC Set-Up Time Program Pulse Width (1) CE Set-Up Time OE Set-Up Time OE Hold Time OE Recovery Time
OE /VPP Rise Time During Programming
Note 1: For express algorithm, initial programming width tolerance is 100 µs ±5%. 2: This parameter is only sampled and not 100% teted. Output float is defined as the point where data is no longer driven (see timing diagram).
DS11173F-page 4
© 1998 Microchip Technology Inc.
27C512A
FIGURE 1-2: PROGRAMMING WAVEFORMS (1)
Program VIH Address Stable Address VIL VIH Data VIL t AS Data In Stable t AH Data Out Valid t DF (2) t CE t VCS t CES t PW Verify
6.5 V (3) VCC 5.0V VIH CE VIL
t DS
t DH
(2)
t OES
t OEH t OR
13.0 V (3) OE/V PP VIL t PRT Notes: (1) The input timing reference level is 0.8V for VIL and 2.0V for VIH. (2) t DF and tOE are characteristics of the device but must be accommodated by the programmer. (3) VCC = 6.5V ±0.25V, VPP = VH = 13.0V ±0.5V for express programming algorithm. t OPW
TABLE 1-6:
MODES
CE VIL VIL VIL VIH VIH VIL VIL OE/VPP VIL VH VIL VH X VIH VIL A9 X X X X X X VH O0 - O7 DOUT DIN DOUT High Z High Z High Z Identity Code
Operation Mode Read Program Program Verify Program Inhibit Standby Output Disable Identity
X = Don't Care
1.2
Read Mode
(See Timing Diagrams and AC Characteristics) Read Mode is accessed when a) b) the CE pin is low to power up (enable) the chip the OE/VPP pin is low to gate the data to the output pins
For Read operations, if the addresses are stable, the address access time (tACC) is equal to the delay from CE to output (tCE). Data is transferred to the output after a delay (tOE) from the falling edge of OE/VPP.
© 1998 Microchip Technology Inc.
DS11173F-page 5
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