SCHEDULE 13G

Amendment No. 1
Cypress Semi-Conductor Corporation
common stock
Cusip # 232806109
Filing Fee: No


Cusip # 232806109
Item 1:	Reporting Person - FMR Corp. - (Tax ID:  04-2507163)
Item 4:	Commonwealth of Massachusetts
Item 5:	None
Item 6:	None
Item 7:	3,670,600
Item 8:	None
Item 9:	3,670,600
Item 11:	10.12%
Item 12:	HC 




Cusip # 232806109
Item 1:	Reporting Person - Edward C. Johnson 3d - (Tax ID:  
029-24-9996)
Item 4:	United States of America
Item 5:	None
Item 6:	None
Item 7:	3,670,600
Item 8:	None
Item 9:	3,670,600
Item 11:	10.12%
Item 12:	IN 




SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS
FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b)


Item 1(a).	Name of Issuer:

		Cypress Semi-Conductor Corporation

Item 1(b).	Name of Issuer's Principal Executive Offices:

		3901 North First Street
		San Jose, CA  95134-1599

Item 2(a).	Name of Person Filing: 

		FMR Corp.

Item 2(b).	Address or Principal Business Office or, if None, 
Residence:

		82 Devonshire Street, Boston, Massachusetts  02109

Item 2(c).	Citizenship:

		Not applicable

Item 2(d).	Title of Class of Securities:

		Common Stock

Item 2(e).	CUSIP Number:  

		232806109

Item 3.	This statement is filed pursuant to Rule 13d-1(b) or 13d-
2(b) and the person filing, FMR Corp., is a parent 
holding company in accordance with Section 240.13d-
1(b)(ii)(G).  (Note:  See Item 7).

Item 4.	Ownership

	(a)	Amount Beneficially Owned:
	3,670,600

	(b)	Percent of Class:
	10.12%

	(c)	Number of shares as to which such person has:  

	(i)	sole power to vote or to direct the vote:
	None

	(ii)	shared power to vote or to direct the vote:
	None

	(iii)	sole power to dispose or to direct the 
disposition of:	3,670,600

	(iv)	shared power to dispose or to direct the 
disposition of:	None




Item 5.	Ownership of Five Percent or Less of a Class.

	Not applicable.

Item 6.	Ownership of More than Five Percent on Behalf of 
Another Person.

	Various persons have the right to receive or the 
power to direct the receipt of dividends from, or 
the proceeds from the sale of, the common stock of 
Cypress Semi-Conductor Corporation.  The interest 
of one person, Fidelity Magellan Fund, an 
investment company registered under the Investment 
Company Act of 1940, in the common stock of 
Cypress Semi-Conductor Corporation, amounted to 
3,338,600 shares or 9.20% of the total outstanding 
common stock at February 28, 1994.  

Item 7.	Identification and Classification of the Subsidiary 
Which Acquired the Security Being Reported on By the 
Parent Holding Company.

	See attached Exhibit(s) A and B.

Item 8.	Identification and Classification of Members of the 
Group.

	Not applicable, see attached Exhibit A. 

Item 9.	Notice of Dissolution of Group.

	Not applicable.


Item 10.	Certification.

	By signing below I certify that, to the best of my 
knowledge and belief, the securities referred to above 
were acquired in the ordinary course of business and 
were not acquired for the purpose of and do not have 
the effect of changing or influencing the control of 
the issuer of such securities and were not acquired in 
connection with or as a participant in any transaction 
having such purpose or effect.


Signature

	After reasonable inquiry and to the best of my 
knowledge and belief, I certify that the information 
set forth in this statement is true, complete and 
correct. 



	March 10, 1994	
Date



	/s/Arthur S. Loring
Signature



	Arthur S. Loring, Vice 
President	
Name/Title




SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS
FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b)

	Pursuant to the instructions in Item 7 of Schedule 13G, 
Fidelity Management & Research Company ("Fidelity"), 82 
Devonshire Street, Boston, Massachusetts 02109, a wholly-owned 
subsidiary of FMR Corp. and an investment adviser registered 
under Section 203 of the Investment Advisers Act of 1940, is 
the beneficial owner of 3,645,600 shares or 10.05% of the 
common stock outstanding of Cypress Semi-Conductor Corporation 
("the Company") as a result of acting as investment adviser to 
several investment companies registered under Section 8 of the 
Investment Company Act of 1940.  

	The ownership of one investment company, Fidelity Magellan 
Fund, amounted to 3,338,600 shares or 9.20% of the common stock 
outstanding.  Fidelity Magellan Fund has its principal business 
office at 82 Devonshire Street, Boston, Massachusetts 02109.  

	Edward C. Johnson 3d, FMR Corp., through its control of 
Fidelity, and the Funds each has sole power to dispose of the 
3,645,600 shares owned by the Funds.

	Neither FMR Corp. nor Edward C. Johnson 3d, Chairman of FMR 
Corp., has the sole power to vote or direct the voting of the 
shares owned directly by the Fidelity Funds, which power 
resides with the Funds' Boards of Trustees.  Fidelity carries 
out the voting of the shares under written guidelines 
established by the Funds' Boards of Trustees.

	Fidelity Management Trust Company, 82 Devonshire Street, 
Boston, Massachusetts 02109, a wholly-owned subsidiary of FMR 
Corp. and a bank as defined in Section 3(a)(6) of the 
Securities Exchange Act of 1934, is the beneficial owner of 
25,000 shares or 0.07% of the common stock outstanding of the 
company as a result of its serving as investment manager of the 
institutional account(s).  

	FMR Corp., through its control of Fidelity Management Trust 
Company, has sole voting and dispositive power over 25,000 
shares of common stock owned by the institutional account(s) as 
reported above.

	Edward C. Johnson 3d owns 34.0% of the outstanding voting 
common stock of FMR Corp.  Mr. Johnson 3d is Chairman of FMR 
Corp.  Various Johnson family members and trusts for the 
benefit of Johnson family members own FMR Corp. voting common 
stock.  These Johnson family members, through their ownership 
of voting common stock, form a controlling group with respect 
to FMR Corp.



SCHEDULE 13G - TO BE INCLUDED IN STATEMENTS
FILED PURSUANT TO RULE 13d-1(b) or 13d-2(b)

RULE 13d-1(e)  AGREEMENT

	The undersigned persons, on March 10, 1994, agree and 
consent to the joint filing on their behalf of this Schedule 
13G in connection with their beneficial ownership of the common 
stock of Cypress Semi-Conductor Corporation at February 28, 
1994.

	FMR Corp.
	By	/s/Arthur S. Loring
Arthur S. Loring
Vice President - Legal
		Edward C. Johnson 3d
	By	/s/Arthur S. Loring
Arthur S. Loring
Under Power of Attorney 
dated 5/17/89
On File with Schedule 
13G for
Airborne Freight Corp. 
9/10/91
	Fidelity Management & Research 
Company
	By	/s/Arthur S. Loring
Arthur S. Loring
Sr. V.P. and General 
Counsel
	Fidelity Magellan Fund
	By	/s/Arthur S. Loring
Arthur S. Loring
Secretary