Rainbow-electronics AT27C2048 Manual de usuario

Busca en linea o descarga Manual de usuario para Almacenamiento Rainbow-electronics AT27C2048. Rainbow Electronics AT27C2048 User Manual Manual de usuario

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1
Features
Fast Read Access Time - 55 ns
Low Power CMOS Operation
100 µA Maximum Standby
35 mA Maximum Active at 5 MHz
JEDEC Standard Packages
40-Lead 600 mil PDIP
44-Lead PLCC
40-Lead VSOP (10 mm x 14 mm)
Direct Upgrade from 512K-bit and 1M-bit (AT27C516 and AT27C1024) EPROMs
5V
±
10% Power Supply
High Reliability CMOS Technology
2,000V ESD Protection
200 mA Latchup Immunity
Rapid™
Programming Algorithm - 50 µs/word (typical)
CMOS and TTL Compatible Inputs and Outputs
Integrated Product Identification Code
Commercial and Industrial Temperature Ranges
Description
The AT27C2048 is a low-power, high performance 2,097,152-bit one-time program-
mable read only memory (OTP EPROM) organized 128K by 16 bits. It requires a sin-
gle 5V power supply in normal read mode operation. Any word can be accessed in
less than 55 ns, eliminating the need for speed-reducing WAIT states. The by-16
organization makes this part ideal for high-performance 16 and 32 bit microprocessor
systems.
VSOP Top View
Type 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
A9
A10
A11
A12
A13
A14
A15
A16
PGM
VCC
VPP
CE
O15
O14
O13
O12
O11
O10
O9
O8
GND
A8
A7
A6
A5
A4
A3
A2
A1
A0
OE
O0
O1
O2
O3
O4
O5
O6
O7
GND
PDIP Top View
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
VPP
CE
O15
O14
O13
O12
O11
O10
O9
O8
GND
O7
O6
O5
O4
O3
O2
O1
O0
OE
VCC
PGM
A16
A15
A14
A13
A12
A11
A10
A9
GND
A8
A7
A6
A5
A4
A3
A2
A1
A0
PLCC Top View
Note: PLCC package pins 1 and 23
are DON’T CONNECT.
7
8
9
10
11
12
13
14
15
16
17
39
38
37
36
35
34
33
32
31
30
29
O12
O11
O10
O9
O8
GND
NC
O7
O6
O5
O4
A13
A12
A11
A10
A9
GND
NC
A8
A7
A6
A5
6
5
4
3
2
1
44
43
42
41
40
18
19
20
21
22
23
24
25
26
27
28
O3
O2
O1
O0
OE
DC
A0
A1
A2
A3
A4
O13
O14
O15
CE
VPP
DC
VCC
PGM
A16
A15
A14
2-Megabit
(128K x 16)
OTP EPROM
AT27C2048
Rev. 0632C–10/98
Note: Both GND pins must be connected.
Pin Configurations
Pin Name Function
A0 - A16 Addresses
O0 - O15 Outputs
CE
Chip Enable
OE Output Enable
PGM
Program Strobe
NC No Connect
DC Don’t Connect
(continued)
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Indice de contenidos

Pagina 1 - AT27C2048

1Features•Fast Read Access Time - 55 ns•Low Power CMOS Operation– 100 µA Maximum Standby– 35 mA Maximum Active at 5 MHz•JEDEC Standard Packages– 40-Le

Pagina 2

AT27C204810Packaging Information.045(1.14) X 45°PIN NO. 1IDENTIFY.045(1.14) X 30° - 45°.012(.305).008(.203).021(.533).013(.330).630(16.0).590(15.0).04

Pagina 3

AT27C204811

Pagina 4

© Atmel Corporation 1998.Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standa

Pagina 5

AT27C20482In read mode, the AT27C2048 typically consumes 15 mA.Standby mode supply current is typically less than 10 µA.The AT27C2048 is available in

Pagina 6

AT27C20483Note: Maximum voltage is -0.6V dc which may undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is VCC + 0.75V dc

Pagina 7

AT27C20484Notes: 1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP.2. VPP may be connected directly to VCC,

Pagina 8

AT27C20485AC Waveforms for Read Operation(1)Notes: 1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unles

Pagina 9

AT27C20486Programming Waveforms(1)Notes: 1. The Input Timing Reference is 0.8V for VIL and 2.0V for VIH.2. tOE and tDFP are characteristics of the dev

Pagina 10

AT27C20487Notes: 1. VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP.2. This parameter is only sampled and is

Pagina 11

AT27C20488Rapid Programming AlgorithmA 50 µs CE pulse width is used to program. The address isset to the first location. VCC is raised to 6.5V and VPP

Pagina 12 - 0632C–10/98/xM

AT27C20489Ordering InformationtACC(ns)ICC (mA)Ordering Code Package Operation RangeActive Standby55 35 0.1 AT27C2048-55JCAT27C2048-55PCAT27C2048-55VC4

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