X25080P Xicor, X25080P Datasheet

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X25080P

Manufacturer Part Number
X25080P
Description
8K (1K x 8bit) SPI serial E2PROM with block Lock protection
Manufacturer
Xicor
Datasheet
X25080
8K
FEATURES
• 2MHz Clock Rate
• SPI Modes (0,0 & 1,1)
• 1K X 8 Bits
• Low Power CMOS
• 2.7V To 5.5V Power Supply
• Block Lock Protection
• Built-in Inadvertent Write Protection
• Self-Timed Write Cycle
• High Reliability
• 8-Lead PDlP Package
• 8-Lead SOIC Package
• 14-Lead TSSOP Package
FUNCTIONAL DIAGRAM
Direct Write™ and Block Lock™ Protection is a trademark of Xicor, Inc.
©Xicor, Inc. 1994, 1995, 1996 Patents Pending
3090-1.7 6/11/96 T3/C1/D0 NS
— 32 Byte Page Mode
— <1 A Standby Current
— <5mA Active Current
— Protect 1/4, 1/2 or all of E
— Power-Up/Power-Down protection circuitry
— Write Enable Latch
— Write Protect Pin
— 5ms Write Cycle Time (Typical)
— Endurance: 100,000 cycles
— Data Retention: 100 Years
— ESD protection: 2000V on all pins
A V A I L A B L E
A
PPLICATION
HOLD
SCK
AN61
WP
SO
CS
SPI Serial E
SI
N
OTE
REGISTER
COMMAND
CONTROL
CONTROL
DECODE
STATUS
TIMING
WRITE
LOGIC
LOGIC
AND
AND
2
PROM Array
2
PROM With Block Lock
PROTECT
WRITE
LOGIC
X25080
1
DESCRIPTION
The X25080 is a CMOS 8192-bit serial E
internally organized as 1K x 8. The X25080 features a
Serial Peripheral Interface (SPI) and software protocol
allowing operation on a simple three-wire bus. The bus
signals are a clock input (SCK) plus separate data in (SI)
and data out (SO) lines. Access to the device is con-
trolled through a chip select (CS) input, allowing any
number of devices to share the same bus.
The X25080 also features two additional inputs that
provide the end user with added flexibility. By asserting
the 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.
The X25080 utilizes Xicor’s proprietary Direct Write™
cell, providing a minimum endurance of 100,000 cycles
and a minimum data retention of 100 years.
X DECODE
LOGIC
TM
16
Protection
8
8
32
Characteristics subject to change without notice
DATA REGISTER
Y DECODE
16 X 256
1K BYTE
3090 ILL F01
8 X 256
8 X 256
ARRAY
8
1K x 8 Bit
2
PROM,

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X25080P Summary of contents

Page 1

... LOGIC HOLD WRITE CONTROL AND TIMING WP LOGIC Direct Write™ and Block Lock™ Protection is a trademark of Xicor, Inc. ©Xicor, Inc. 1994, 1995, 1996 Patents Pending 3090-1.7 6/11/96 T3/C1/D0 NS X25080 2 PROM With Block Lock DESCRIPTION The X25080 is a CMOS 8192-bit serial E internally organized ...

Page 2

X25080 PIN DESCRIPTIONS Serial Output (SO push/pull serial data output pin. During a read cycle, data is shifted out on this pin. Data is clocked out by the falling edge of the serial clock. Serial Input (SI) ...

Page 3

X25080 PRINCIPLES OF OPERATION 2 The X25080 PROM designed to interface directly with the synchronous serial peripheral interface (SPI) of many popular microcontroller families. The X25080 contains an 8-bit instruction register accessed ...

Page 4

X25080 Write-Protect Enable The Write-Protect-Enable (WPEN) is available for the X25080 as a nonvolatile enable bit for the WP pin. Protected Unprotected WPEN WP WEL Blocks Protected Protected Protected 1 LOW 0 Protected Protected ...

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. • ...

Page 6

X25080 Figure 3. Write Enable Latch Sequence CS SCK SI SO Figure 4. Byte Write Operation Sequence SCK INSTRUCTION SI HIGH IMPEDANCE HIGH IMPEDANCE 5 ...

Page 7

X25080 Figure 5. Page Write Operation Sequence SCK INSTRUCTION SCK DATA BYTE Figure 6. Write Status Register Operation ...

Page 8

X25080 ABSOLUTE MAXIMUM RATINGS* Temperature under Bias .................. – +135 C Storage Temperature ....................... – +150 C Voltage on any Pin with Respect to V D.C. Output Current ............................................. 5mA Lead Temperature (Soldering, 10 seconds) .............................. ...

Page 9

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 ...

Page 10

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 t t ...

Page 11

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 ...

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 ...

Page 13

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 ...

Page 14

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) ...

Page 15

... LIMITED WARRANTY Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty, express, statutory, implied description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. ...

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