X25080 Intersil Corporation, X25080 Datasheet
X25080
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X25080 Summary of contents
Page 1
... HOLD input, the X25080 will ignore transitions on its inputs, thus allowing the host to service higher priority interrupts. The WP input can be used as a hardwire input to the X25080 disabling all write attempts to the status register, thus providing a mechanism for limiting end user capability of altering 0, 1/4, 1/2 or all of the memory. ...
Page 2
... The WP pin function is blocked when the WPEN bit in the status register is “0”. This allows the user to install the X25080 in a system with WP pin grounded and still be able to write to the status register. The WP pin functions will be enabled when the WPEN bit is set “1”. ...
Page 3
... WEL and WIP are read-only and automatically set by other operations. The Write-In-Process (WIP) bit indicates whether the X25080 is busy with a write operation. When set to a “1”, a write is in progress, when set to a “0”, no write is in progress. During a write, all other bits are set to “1”. ...
Page 4
... CS must go LOW and remain LOW for the duration of the operation. The host may continue to write bytes of data to the X25080. The only restriction is the 32 bytes must reside on the same page. If the address counter reaches the end of the page and the clock continues, the counter will “ ...
Page 5
... X25080 Operational Notes The X25080 powers-up in the following state: • The device is in the low power standby state. • A HIGH to LOW transition required to enter an active state and receive an instruction. • SO pin is high impedance. • The “write enable” latch is reset. 2 Figure 1. Read E ...
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... X25080 Figure 3. Write Enable Latch Sequence CS SCK SI SO Figure 4. Byte Write Operation Sequence SCK INSTRUCTION SI HIGH IMPEDANCE HIGH IMPEDANCE BIT ADDRESS 3090 ILL F05 DATA BYTE 3090 ILL F06 ...
Page 7
... X25080 Figure 5. Page Write Operation Sequence SCK INSTRUCTION SCK DATA BYTE Figure 6. Write Status Register Operation Sequence CS 0 SCK SI HIGH IMPEDANCE BIT ADDRESS DATA BYTE INSTRUCTION DATA BYTE DATA BYTE 3090 ILL F07 DATA BYTE 3090 ILL F08 0 ...
Page 8
... PGM T06.1 Limits Min. Max. Units – – – 0 5V. CC Test is stable until the specified operation can be initiated. These parameters CC 8 Limits X25080 5V 10% X25080-2.7 2.7V to 5.5V Test Conditions SCK = V x 0.1/V x 0.9 @ 2MHz Open OUT 5V 3mA CC OL ...
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... X25080 EQUIVALENT A.C. LOAD CIRCUIT 5V 1.44K 1.64K OUTPUT OUTPUT 1.95K 4.63K 100pF A.C. CHARACTERISTICS (Over recommended operating conditions, unless otherwise specified) Data Input Timing Symbol Parameter f Clock Frequency SCK t Cycle Time CYC CS Lead Time t LEAD CS Lag Time t LAG t Clock HIGH Time ...
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... X25080 Serial Output Timing CS SCK MSB OUT ADDR SI LSB IN Serial Input Timing CS t LEAD SCK MSB IN HIGH IMPEDANCE CYC MSB–1 OUT LAG DIS LSB OUT 3090 ILL F10 LAG t FI LSB IN 3090 ILL F11 ...
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... X25080 Hold Timing CS SCK SO SI HOLD 3090 ILL F12.1 SYMBOL TABLE WAVEFORM INPUTS Must be steady May change from LOW to HIGH May change from HIGH to LOW Don’t Care: Changes Allowed N/A 11 OUTPUTS Will be steady Will change from LOW to HIGH Will change ...
Page 12
... X25080 PACKAGING INFORMATION HALF SHOULDER WIDTH ON ALL END PINS OPTIONAL 0.015 (0.38) TYP. 0.010 (0.25) NOTE: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH 8-LEAD PLASTIC DUAL IN-LINE PACKAGE TYPE P 0.430 (10.92) 0.360 (9.14) PIN 1 INDEX PIN 1 0.300 (7.62) REF. ...
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... X25080 PACKAGING INFORMATION 8-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S PIN 1 INDEX 0.010 (0.25) 0.020 (0.50) 0 – 8 0.016 (0.410) 0.037 (0.937) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 0.150 (3.80) 0.158 (4.00) PIN 1 0.014 (0.35) 0.019 (0.49) 0.188 (4.78) 0.197 (5.00) (4X ...
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... X25080 PACKAGING INFORMATION 14-LEAD PLASTIC, TSSOP PACKAGE TYPE V 0 – 8 See Detail “A” NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) .025 (.65) BSC .169 (4.3) .252 (6.4) BSC .177 (4.5) .193 (4.9) .200 (5.1) .047 (1.20) .0075 (.19) .002 (.05) .0118 (.30) .006 (.15) .010 (.25) ...
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... V Limits CC Blank = 5V 10% 2.7 = 2.7V to 5.5V Temperature Range Blank = Commercial = + Industrial = – + Military = – +125 C Package P = 8-Lead Plastic DIP S = 8-Lead SOIC V = 14-Lead TSSOP X25080 8-Lead Plastic DIP Blank = 8-Lead SOIC V = 14-Lead TSSOP X Blank = 10%, – + 2.7V to 5.5V + 2.7V to 5.5V, – + ...