These emergency loans are more easily available, but the ECB's Governing Council must approve provision of ELA.
"The Governing Council of the European Central Bank decided to maintain the current level of Emergency Liquidity Assistance (ELA) until Monday, 25 March 2013," the ECB said in a statement on Thursday as the Council met in Frankfurt.
"Thereafter, Emergency Liquidity Assistance (ELA) could only be considered if an EU/IMF program is in place that would ensure the solvency of the concerned banks," it added.
Cypriot banks are greatly reliant on ELA for funding. At the end of January, they had taken around 9.1 billion euros from the country's central bank through the program, the Central Bank of Cyprus balance sheet showed.
At the same time, the country's banks had taken only 376 million euros from regular ECB liquidity operations. The ECB stopped accepting Cyprus government bonds as collateral in June, which made it more difficult for the country's banks to participate in regular ECB operations.
The ECB's firm stand follows skepticism of some of its policies, particularly in Germany, where the bank has been criticized for being too lax on sticking to rules.
ECB policymaker Joerg Asmussen, a German, stressed on Wednesday that the ECB can only allow the provision of emergency liquidity to solvent banks, and that without an aid programme to recapitalise Cypriot banks their solvency "cannot be assumed".
The central bank is in no mood to bend its rules for Cyprus.
Some ECB policymakers, led by Bundesbank chief Jens Weidmann, are still uncomfortable after the central bank agreed last month to a deal to ease Ireland's bank debts.
Weidmann, and some others at the ECB, are concerned the Ireland deal amounts to "monetary financing" - the funding of governments with central bank money, a taboo for the ECB.
But Ireland has swallowed a severe dose of austerity medicine and as such is the role model for the euro zone's other debt-ridden economies. Cyprus, unwilling so far to accept the conditions for unlocking EU aid, is not.
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