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參數(shù)資料
| 型號(hào)： | 2764A |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 64K (8K x 8) UV EPROM and OTP ROM |
| 中文描述： | 64K的（8K的× 8）紫外線EPROM和檢察官辦公室光盤 |
| 文件頁數(shù)： | 7/11頁 |
| 文件大?。?/td> | 99K |
| 代理商： | 2764A |
tAVPL
VALID
AI00779
A0-A12
Q0-Q7
VPP
VCC
P
G
DATA IN
DATA OUT
E
tQVPL
tVPHPL
tVCHPL
tPHQX
tPLPH
tGLQV
tQXGL
tELPL
tGHQZ
tGHAX
PROGRAM
VERIFY
Figure6. Programming and Verify Modes AC Waveforms
AI01167
n = 1
Last
Addr
VERIFY
P = 1ms Pulse
++n
> 25
++ Addr
VCC= 6V, VPP= 12.5V
FAIL
CHECK ALL BYTES
1st: VCC= 6V
2nd: VCC= 4.2V
YES
NO
YES
NO
YES
NO
P = 3ms Pulse by n
Figure7. Programming Flowchart
Programming
When delivered (and after each erasure for UV
EPROM), all bits of the M27C64A are in the “1”
state. Data is introduced by selectively program-
ming ”0s” into the desired bit locations. Although
only “0s” will be programmed, both “1s” and “0s”
can be present in the data word. The only way to
change a “0” to a ”1” is by die expositionto ultra-
violet light (UV EPROM). The M27C64A is in the
programmingmodewhenV
pp
inputisat 12.5V,and
E andPareatTTL-low.Thedatatobeprogrammed
is applied 8 bits in parallel to the data output pins.
The levelsrequiredfor theaddressand datainputs
are TTL.V
CC
is specifiedto be 6V
±
0.25V.
High Speed Programming
The highspeedprogramming algorithm,described
in the flowchart, rapidly programs the M27C64A
using an efficientand reliablemethod, particularly
suited to the production programming environ-
ment.Anindividualdevicewilltakearound1minute
to program.
Program Inhibit
Programmingof multiple M27C64Ain parallel with
different data is also easilyaccomplished. Except
for E, all like inputs including G of the parallel
M27C64Amay be common. ATTL low level pulse
applied to a M27C64AE input, withP low and V
PP
7/11
M27C64A
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PDF描述 |
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| 2768A | Evaluation Kit for the MAX3620 |
| 276QS24E | GaAs MMIC 4x2 SWITCH MATRIX, 0.7 - 3.0 GHz |
| 277.6105.0001 | PTSE 14C 4#16,8#20 SKT PLUG |
| 277.6106.0002 | Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT06; No. of Contacts:61; Connector Shell Size:24; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Body Style:Straight |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 2764A-1 | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:64K(8K x 8) UV ERASABLE PROMs |
| 2764A-2DC | 制造商:Advanced Micro Devices 功能描述:PULLS 制造商:. 功能描述: |
| 2764AA4 | 制造商:Nito 功能描述:ADAP MALE BSPT 1/8 X 1/4 |
| 2764AF1 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| 2764DA4 | 制造商:Nito 功能描述:ADAP MALE BSPT 1/2 X 1/4 |
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