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參數(shù)資料
| 型號： | R29621 |
| 文件頁數(shù)： | 2/29頁 |
| 文件大?。?/td> | 188K |
| 代理商： | R29621 |
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www.fairchildsemi.com
Features
Devices are available in military (-55
°
C to +125
°
C)
temperature range
Standard PROMs are offered in power-switched SPROM
versions
Typically, 75% power savings achieved by deselected
SPROMs
Reliable nichrome fuses
Three-state outputs
Devices programmed on standard PROM programmers
High immunity or resistance to space levels of radiation
Device pinouts comply with JEDEC standards
Available in surface mount and through-hole packaging
PROMs and SPROMs are offered in 24-pin, 0.3" wide
DIPs
Applications
Microprogram control store
Microprocessor program store
Programmable logic
Custom look-up tables
Security encoding/decoding
Code converter
Character generator
Use in redundant systems
Description
Fairchild Semiconductor Electronics Semiconductor Divi-
sion’s Bipolar Field Programmable Read-Only Memories
include both standard and power-switched versions. CS/PS
inputs provide logic flexibility and ease of memory expan-
sion decoding. SPROM power-switch circuitry is activated
by the PS input.
Fairchild Semiconductor PROMs and SPROMs are manu-
factured with nichrome fuses and low power Schottky tech-
nology. The devices are shipped with all bits in the HIGH
(logical ONE) state. To achieve a LOW state in a given bit
location the nichrome link is fused open by passing a short,
high current pulse through the link. All devices are pro-
grammed using the same programming technique.
Standard PROMs are enabled by a single active LOW CS or
by both active LOW CS and HIGH CS inputs. Power-
switched PROMs (SPROMs) are enabled by a single active
LOW PS or by both active LOW PS and HIGH PS inputs.
See the individual block diagrams for the enable scheme.
R296X X /R297X X
S tandard PROMs and Power-S witc hed S PROMs
Rev. 1.0.1
相關(guān)PDF資料 |
PDF描述 |
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| R29621ADM | |
| R29621ADMS | |
| R29621DM | |
| R29771FMS | |
| R29771LMS | |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R29621ADM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| R29621ADM/883B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| R29621ADMS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| R29621DM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| R29621DM/883B | 制造商:Fairchild Semiconductor Corporation 功能描述:R29621DM/883 |
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