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參數(shù)資料
| 型號： | HS-6617RH |
| 廠商： | Intersil Corporation |
| 英文描述： | Radiation Hardened 2K x 8 CMOS PROM |
| 中文描述： | 輻射加固2K × 8的CMOS胎膜早破 |
| 文件頁數(shù)： | 12/14頁 |
| 文件大小： | 128K |
| 代理商： | HS-6617RH |
DESIGN INFORMATION
(Continued)
The information contained in this section has been developed through characterization by Intersil Semiconductor and is for use as
application and design information only. No guarantee is implied.
12
HS-6617RH
Background Information Programming
The HS-6617 CMOS PROM is manufactured with all bits
containing a logical zero (output low). Any bit can be
programmed selectively to a logical one (output high) state
by following the procedure shown below. To accomplish this,
a programmer can be built that meets the specifications
shown, or use of an approved commercial programmer is
recommended.
Programming Sequence of Events
1. Apply a voltage of VDD1 to VDD of the PROM.
2. Read all fuse locations to verify that the PROM is blank (output
low).
3. Place the PROM in the initial state for programming:
P = VIH, G = VIL.
4. Apply the correct binary address for the word to be programmed.
No inputs should be left open circuit.
5. After a delay of td, apply voltage of VIL to E (pin 18) to access the
addressed word.
6. The address may be held through the cycle, but must be held
valid at least for a time equal to td after the falling edge of E.
None of the inputs should be allowed to float to an invalid logic
level.
7. After a delay of td, disable the outputs by applying a voltage of
VIH to G (pin 20).
8. After a delay of td, apply voltage of VIL to P (pin 21).
9. After delay of td, raise VDD (pin 24) to VDDPROG with a rise time
of tr. All outputs at VIH should track VDD within VDD-2.0V to
VDD+0.3V. This could be accomplished by pulling outputs at
VIH to VDD through pull-up resistors of value Rn.
10. After a delay of td, pull the output which corresponds to the bit to
be programmed to VIL. Only one bit should be programmed at a
time.
11. After a delay of tpw, allow the output to be pulled to VIH through
pull-up resistor Rn.
12. After a delay of td, reduce VDD (pin 24) to VDD1 with a fall time
of tf. All outputs at VIH should track VDD with VDD-2.0V to
VDD+0.3V. This could be accomplished by pulling outputs at
VIH to VDD through pull-up resis- tors of value Rn.
E = VIH,
13. Apply a voltage of VIH to P (pin 21).
14. After a delay of td, apply a voltage of VIL to G (pin 20).
15. After a delay of td, examine the outputs for correct data. If any
location verifies incorrectly, it should be considered a program-
ming reject.
16. Repeat steps 3 through 15 for all other bits to be programmed in
the PROM.
Post-Programming Verification
17. Place the PROM in the post-programming verification mode:
E = VIH, G = VIL, P = VIH, VDD (pin 24) = VDD1.
18. Apply the correct binary address of the word to be verified to the
PROM.
19. After a delay of td, apply a voltage of VIL to E (pin 18).
20. After a delay of td, examine the outputs for correct data. If any
location fails to verify correctly, the PROM should be considered
a programming reject.
21. Repeat steps 17 through 20 for all possible programming
locations.
Post-Programming Read
22. Apply a voltage of VDD2 = 4.0V to VDD (pin 24).
23. After a delay of td, apply a voltage of VIH to E (pin 18).
24. Apply the correct binary address of the word to be read.
25. After a delay of TAVEL, apply a voltage of VIL to E (pin 18).
26. After a delay of TELQV, examine the outputs for correct data. If
any location fails to verify correctly, the PROM should be consid-
ered a programming reject.
27. Repeat steps 23 through 26 for all address locations.
28. Apply a voltage of VDD2 = 6.0V to VDD (pin 24).
29. Repeat steps 23 through 26 for all address locations.
Spec Number
518742
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| HS-6617RH_00 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Radiation Hardened 2K x 8 CMOS PROM |
| HS-6617RH-T | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Radiation Hardened 2K x 8 CMOS PROM |
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| HS663 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
| HS664 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Peripheral IC |
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