BR93LC56 Rohm, BR93LC56 Datasheet
BR93LC56
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BR93LC56 Summary of contents
Page 1
... DI pin under the control of the CS and SK pins write operation, the internal status signal (READY or BUSY) can be output from the DO pin. The only difference between the BR93LC56 / the write disable voltage and its accompanying write enable voltage. All other functions and characteristics are the same. ...
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... Reduced by 3.5mW for each increase over Reduced by 3.0mW for each increase over 25 C. • Recommended operating conditions (Ta = 25°C) Parameter Symbol Writing Power supply voltage Reading Input voltage 2 BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV Power supply voltage detector Write disable Address Address 7bit buffer decoder Data ...
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... V OL Output high level voltage V OH Input leakage current I LI Output leakage current I LO Operating current I CC2 dissipation 2 Standby current I SB BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV Min. Typ. Max. Unit – 0.3 — 0.8 2.0 — 0.3 CC — — 0.4 2.4 — ...
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... DI hold time Data "1" output delay time Data "0" output delay time Time from CS to output confirmation Time from CS to output High impedance Write cycle time 4 BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV Command 1 Read (READ) Write enabled (WEN) 2 Write (WRITE) Write all addresses (WRAL) ...
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... CS "L" time CS setup time DI setup time CS hold time DI hold time Data "1" output delay time Data "0" output delay time Time from CS to output High impedance Not designed for radioactive rays. BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV Symbol Min. Typ. Max. f — — 250 ...
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... During a writing operation, a Status Valid (READY or BUSY) is valid from the time CS is HIGH until time t command and before the output of the next command start bit. Also, DO must HIGH-Z state when CS is LOW. • After the completion of each mode, make sure that CS is set to LOW, to reset the internal circuit, before changing modes. 6 BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV ...
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... CS is held in HIGH state during automatic incrementing BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV off. However, read commands can be used in either the write enable or write disable state. (6) Write (Figure 4) This command writes the input 16-bit data (D15 to D0) to the specified address (A6 to A0). Actual writing of ...
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... CS = HIGH. (Caution is especially important when common input ports are used.) This applies to all of the write commands. (7) All address write (Figure 5) With this command, the input 16-bit data is written simultaneously to all of the addresses (128 words BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV D15 D14 1 0 Fig. 4 Write cycle timing (WRITE) ...
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... Start bit 1 bit a: Canceled by setting CS LOW Cannot be canceled by any method the designated address is not secured OFF (V CC BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV Operating code Address 2 bits 8 bits Cancel can be performed for the entire read mode space Cancellation method: CS LOW Operating code Address ...
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... In this case LOW when the power supply is 1 (4) Clock (SK) rise conditions b If the clock pin (SK) signal of the BR93LC56 / has a long rise time (tr) and if noise on the signal line exceeds a certain level, erroneous operation can occur due to erroneous counts in the clock. To prevent this, a Schmitt trigger is built into the SK input of the BR93- LC56 / ...
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... BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV The resistor R is the only resistance which limits this current. Therefore, a resistor with a value which satis- fies the -COM and the BR93LC56 / current capacity is required. When using a single control line, when a dummy bit “0” is output to the DO, the -COM address data A0 is also output ...
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... Memory ICs • External dimension (Units: mm) BR93LC56 9.3 0 2.54 0.5 0.1 DIP8 BR93LC56FV 3.0 0 (0.52) 0.65 0.22 0.1 SSOP-B8 12 BR93LC56 / BR93LC56F / BR93LC56RF / BR93LC56FV BR93LC56F / RF 7. 0.3Min. 0.1 5.0 0 1.27 0.4 0.1 0.3Min. 0.15 SOP8 ...