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2.
Pin configurations
Pin name
A0 - A19
Function
Addresses
32-lead PLCC
Top view
32-lead PDIP
Top view
O0 - O7
Outputs
VPP
1
32
VCC
CE
OE/VPP
Chip enable
Output enable/Program supply
A7
A6
A5
A4
A3
A2
A1
A0
O0
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
A14
A13
A8
A9
A11
OE
A10
CE
07
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
2
3
4
5
6
7
8
9
10
11
31
30
29
28
27
26
25
24
23
22
A18
A17
A14
A13
A8
A9
A11
OE
A10
CE
3.
System considerations
A0
O0
O1
O2
GND
12
13
14
15
16
21
20
19
18
17
07
06
05
04
03
Switching between active and standby conditions via the chip enable pin may produce transient voltage excursions. Unless
accommodated by the system design, these transients may exceed datasheet limits, resulting in device nonconformance.
At a minimum, a 0.1μF, high-frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This
capacitor should be connected between the V CC and ground terminals of the device, as close to the device as possible.
Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a 4.7μF bulk electrolytic
capacitor should be utilized, again connected between the V CC and ground terminals. This capacitor should be positioned as
close as possible to the point where the power supply is connected to the array.
Figure 3-1.
Block diagram
2
Atmel AT27C080
0360M–EPROM–4/11
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相关代理商/技术参数
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制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-Megabit 1M x 8 UV Erasable CMOS EPROM
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