X25165 Xicor, X25165 Datasheet

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X25165

Manufacturer Part Number
X25165
Description
Manufacturer
Xicor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
X25165
Manufacturer:
XILINX
0
Part Number:
X25165S8I
Manufacturer:
XICOR
Quantity:
20 000
64K
32K
16K
FEATURES
• Programmable Watchdog Timer
• Low Vcc Detection and Reset Assertion
• Save Critical Data With Block Lock
• In Circuit Programmable ROM Mode
• Long Battery Life With Low Power Consumption
• 1.8V to 3.6V, 2.7V to 5.5V and 4.5V to 5.5V Power
• 2MHz Clock Rate
• Minimize Programming Time
• SPI Modes (0,0 & 1,1)
• Built-in Inadvertent Write Protection
• High Reliability
• Available Packages
BLOCK DIAGRAM
7049 -1.0 6/20/97 T0/C0/D0 SH
Xicor, Inc. 1994, 1995, 1996 Patents Pending
—Reset Signal Valid to Vcc=1V
—Block Lock
—<50 A Max Standby Current, Watchdog On
—<1 A Max Standby Current, Watchdog Off
—<5mA Max Active Current during Write
—<400 A Max Active Current during Read
Supply Operation
—32 Byte Page Write Mode
—Self-Timed Write Cycle
—5ms Write Cycle Time (Typical)
—Power-Up/Power-Down Protection Circuitry
—Write Enable Latch
—Write Protect Pin
—14-Lead SOIC (X2564x)
—14-Lead TSSOP (X2532x, X2516x)
—8-Lead SOIC (X2532x, X2516x)
Programmable Watchdog Timer & V
Serial E
2
PROM Memory Array
RESET/RESET
TM
Protect 0, 1/4, 1/2 or all of
SCK
V
WP
SO
CS
CC
SI
ICP ROM CONTROL
PROGRAMMING,
COMMAND
DECODE &
REGISTER
CONTROL
CONTROL
BLOCK LOCK &
VOLTAGE
TM
RESET
SENSE
LOGIC
DATA
LOW
Protection
X25643/45
X25323/25
X25163/65
CC
1
Supervisory Circuit w/Serial E
DESCRIPTION
These devices combine three popular functions, Watch-
dog Timer, Supply Voltage Supervision, and Serial
E
ers system cost, reduces board space requirements, and
increases reliability.
The Watchdog Timer provides an independent protection
mechanism for microcontrollers. During a system failure,
the device will respond with a RESET/RESET signal
after a selectable time-out interval. The user selects the
interval from three preset values. Once selected, the
interval does not change, even after cycling the power.
The user’s system is protected from low voltage condi-
tions by the device’s low Vcc detection circuitry. When
Vcc falls below the minimum Vcc trip point, the system is
reset. RESET/RESET is asserted until Vcc returns to
proper operating levels and stabilizes.
The memory portion of the device is a CMOS Serial
E
array is internally organized as x 8. The device features a
Serial Peripheral Interface (SPI) and software protocol
allowing operation on a simple four-wire bus.
The device utilizes Xicor’s proprietary Direct Write
providing a minimum endurance of 100,000 cycles per
sector and a minimum data retention of 100 years.
2
2
PROM Memory in one package. This combination low-
PROM array with Xicor’s Block Lock
X - DECODE
WATCHDOG
REGISTER
STATUS
LOGIC
TIMER
Characteristics subject to change without notice
PAGE DECODE LOGIC
32
CONTROL
VOLTAGE
E
SERIAL
ARRAY
2
HIGH
PROM
TM
8K x 8 Bit
4K x 8 Bit
2K x 8 Bit
Protection. The
2
8
PROM
7036 FRM 01
TM
cell,

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X25165 Summary of contents

Page 1

... SOIC (X2532x, X2516x) BLOCK DIAGRAM SI SO SCK CS RESET/RESET Xicor, Inc. 1994, 1995, 1996 Patents Pending 7049 -1.0 6/20/97 T0/C0/D0 SH X25643/45 X25323/25 X25163/65 Supervisory Circuit w/Serial E CC DESCRIPTION These devices combine three popular functions, Watch- dog Timer, Supply Voltage Supervision, and Serial ...

Page 2

X25643/45 X25323/25 X25163/65 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 ...

Page 3

X25643/45 X25323/25 X25163/65 PRINCIPLES OF OPERATION The device is designed to interface directly with the syn- chronous Serial Peripheral Interface (SPI) of many popu- lar microcontroller families. The device monitors the bus and asserts RESET/RESET output if there is no ...

Page 4

X25643/45 X25323/25 X25163/65 The Watchdog Timer bits, WD0 and WD1, select the Watchdog Time-out Period. These nonvolatile bits are programmed with the WRSR instruction. Status Register Bits Watchdog Time-out WD1 WD0 600 Milliseconds 1 0 200 ...

Page 5

X25643/45 X25323/25 X25163/65 For the Page Write Operation (byte or page write completed, CS can only be brought HIGH after bit 0 of the last data byte to be written is clocked in brought HIGH ...

Page 6

X25643/45 X25323/25 X25163/65 Figure 2. Read Status Register Sequence CS 0 SCK SI HIGH IMPEDANCE SO Figure 3. Write Enable Latch Sequence CS SCK ...

Page 7

X25643/45 X25323/25 X25163/65 Figure 4. Write Sequence SCK INSTRUCTION SCK DATA BYTE Figure 5. Status Register Write Sequence CS ...

Page 8

X25643/45 X25323/25 X25163/65 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)............ 300 C ...

Page 9

X25643/45 X25323/25 X25163/65 EQUIVALENT A.C. LOAD CIRCUIT 1.64K OUTPUT RESET/RESET 1.64K 100pF A.C. CHARACTERISTICS (Over recommended operating conditions, unless otherwise specified) Data Input Timing Symbol Parameter f Clock Frequency SCK t Cycle Time CYC t CS ...

Page 10

X25643/45 X25323/25 X25163/65 Data Output Timing Symbol Parameter f Clock Frequency SCK t Output Disable Time DIS t Output Valid from Clock Low V t Output Hold Time HO (3) t Output Rise Time RO (3) t Output Fall Time ...

Page 11

X25643/45 X25323/25 X25163/65 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 ...

Page 12

X25643/45 X25323/25 X25163/65 Power-Up and Power-Down Timing V TRIP VCC t PURST 0 Volts t PURST t R RESET (X25643) RESET (X25645) RESET Output Timing Symbol Parameter Reset Trip Point Voltage, 5V Device V Reset Trip Point Voltage, 2.7V Device ...

Page 13

X25643/45 X25323/25 X25163/65 PACKAGING INFORMATION 14-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S PIN 1 INDEX PIN 1 0.014 (0.35) 0.020 (0.51) 0.336 (8.55) 0.345 (8.75) (4X) 7 0.050 (1.27) 0.010 (0.25 0.020 (0.50) 0 – 8 ...

Page 14

X25643/45 X25323/25 X25163/65 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 P ARENTHESES IN MILLIMETERS) 0.150 (3.80) 0.158 (4.00) ...

Page 15

X25643/45 X25323/25 X25163/65 14-LEAD PLASTIC, TSSOP, PACKAGE TYPE V 0 – 8 See Detail “A” NOTE: ALL DIMENSIONS IN INCHES (IN P ARENTHESES IN MILLIMETERS) .025 (.65) BSC .169 (4.3) .252 (6.4) BSC .177 (4.5) .193 (4.9) .200 (5.1) .047 ...

Page 16

... Xicor, Inc. makes no warranty of merchantability or fitness for any purpose. Xicor, Inc. reserves the right to discontinue production and change specifications and prices at any time and without notice. Xicor, Inc. assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xicor, Inc. product. No other circuits, patents, licenses are implied. ...

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