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AT27C020-90PCのメーカーはATMEL Corporationです、この部品の機能は「2-Megabit 256K x 8 OTP EPROM」です。 |
部品番号 | AT27C020-90PC |
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部品説明 | 2-Megabit 256K x 8 OTP EPROM | ||
メーカ | ATMEL Corporation | ||
ロゴ | |||
このページの下部にプレビューとAT27C020-90PCダウンロード(pdfファイル)リンクがあります。 Total 9 pages
AT27C020
Features
• Fast Read Access Time - 55 ns
• Low Power CMOS Operation
– 100 µA max. Standby
– 25 mA max. Active at 5 MHz
• JEDEC Standard Packages
– 32-Lead 600-mil PDIP
– 32-Lead PLCC
– 32-Lead TSOP
• 5V ± 10% Supply
• High-Reliability CMOS Technology
– 2,000V ESD Protection
– 200 mA Latchup Immunity
• Rapid™ Programming Algorithm - 100 µs/byte (typical)
• CMOS and TTL Compatible Inputs and Outputs
• Integrated Product Identification Code
• Commercial and Industrial Temperature Ranges
Description
The AT27C020 is a low-power, high performance 2,097,152-bit one-time programma-
ble read only memory (OTP EPROM) organized as 256K by 8 bits. It requires only
one 5V power supply in normal read mode operation. Any byte can be accessed in
less than 55 ns, eliminating the need for speed reducing WAIT states on high perfor-
mance microprocessor systems.
In read mode, the AT27C020 typically consumes 8 mA. Standby mode supply current
is typically less than 10 µA.
Pin Configurations
PLCC Top View
Pin Name
A0 - A17
O0 - O7
CE
OE
PGM
Function
Addresses
Outputs
Chip Enable
Output Enable
Program Strobe
A7 5
A6 6
A5 7
A4 8
A3 9
A2 10
A1 11
A0 12
O0 13
29 A14
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE
21 07
2-Megabit
(256K x 8)
OTP EPROM
AT27C020
PDIP Top View
VPP
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32 VCC
31 PGM
30 A17
29 A14
28 A13
27 A8
26 A9
25 A11
24 OE
23 A10
22 CE
21 07
20 06
19 05
18 04
17 03
TSOP Top View
Type 1
A11
A9
A8
A13
A14
A17
PGM
VCC
VPP
A16
A15
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32 OE
31 A10
30 CE
29 07
28 06
27 05
26 04
25 03
24 GND
23 02
22 01
21 O0
20 A0
19 A1
18 A2
17 A3
Rev. 0570C-B–12/97
1
1 Page AT27C020
Absolute Maximum Ratings*
Temperature Under Bias.......................-55°C to +125°C
Storage Temperature............................-65°C to +150°C
Voltage on Any Pin with
Respect to Ground ............................... -2.0V to +7.0V(1)
Voltage on A9 with
Respect to Ground ............................ -2.0V to +14.0V(1)
VPP Supply Voltage with
Respect to Ground ............................. -2.0V to +14.0V(1)
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent
damage to the device. This is a stress rating
only and functional operation of the device at
these or any other conditions beyond those
indicated in the operational sections of this
specification is not implied. Exposure to abso-
lute maximum rating conditions for extended
periods may affect device reliability.
Note:
1. Minimum 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 which may overshoot to +7.0V for
pulses of less than 20 ns.
Operating Modes
Mode/Pin
Read
CE OE PGM
VIL VIL X(1)
Ai
Ai
VPP Outputs
X DOUT
Output Disable
X VIH X X X High Z
Standby
Rapid Program(2)
VIH X
X
VIL VIH VIL
X X High Z
Ai VPP
DIN
PGM Verify
VIL VIL VIH
Ai VPP
DOUT
PGM Inhibit
Product Identification(4)
Notes: 1. X can be VIL or VIH.
2. Refer to Programming Characteristics.
VIH X
VIL VIL
X X VPP High Z
A9 = VH(3)
X A0 = VIH or VIL X Identification Code
A1 - A17 = VIL
3. VH = 12.0 ± 0.5V.
4. Two identifier bytes may be selected. All Ai inputs are held low (VIL), except A9 which is set to VH and A0 which is toggled
low (VIL) to select the Manufacturer’s Identification byte and high (VIH) to select the Device Code byte.
3
3Pages Programming 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 device but must be accommodated by the programmer.
3. When programming the AT27C020, a 0.1 µF capacitor is required across VPP and ground to suppress voltage transients.
DC Programming Characteristics
TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V
Symbol
ILI
VIL
VIH
VOL
VOH
ICC2
IPP2
VID
Parameter
Input Load Current
Input Low Level
Input High Level
Output Low Voltage
Output High Voltage
VCC Supply Current (Program and Verify)
VPP Supply Current
A9 Product Identification Voltage
6 AT27C020
Test Conditions
VIN = VIL, VIH
IOL = 2.1 mA
IOH = -400 µA
CE = PGM = VIL
Limits
Min Max
±10
-0.6 0.8
2.0 VCC + 1.0
0.4
2.4
40
20
11.5 12.5
Units
µA
V
V
V
V
mA
mA
V
6 Page | |||
ページ | 合計 : 9 ページ | ||
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PDF ダウンロード | [ AT27C020-90PC データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
AT27C020-90PC | 2-Megabit 256K x 8 OTP EPROM | ATMEL Corporation |
AT27C020-90PI | 2-Megabit 256K x 8 OTP EPROM | ATMEL Corporation |