X5163 Xicor, X5163 Datasheet

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X5163

Manufacturer Part Number
X5163
Description
CPU Supervisor with 16Kbit SPI EEPROM
Manufacturer
Xicor
Datasheet

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Preliminary Information
Replaces X25163/X25165
FEATURES
• Selectable watchdog timer
• Low V
• Determine watchdog or low voltage reset with a
• Long battery life with low power consumption
• 16Kbits of EEPROM
• Built-in inadvertent write protection
• 2MHz SPI interface modes (0,0 & 1,1)
• Minimize EEPROM programming time
• 2.7V to 5.5V and 4.5V to 5.5V power supply
• Available packages
BLOCK DIAGRAM
REV 1.1 3/5/01
CS/WDI
—Five standard reset threshold voltages
—Re-program low V
—Reset signal valid to V
volatile flag bit
—<50µA max standby current, watchdog on
—<1µA max standby current, watchdog off
—<400µA max active current during read
—Power-up/power-down protection circuitry
—Protect 0, 1/4, 1/2 or all of EEPROM array with
—In circuit programmable ROM mode
—32-byte page write mode
—Self-timed write cycle
—5ms write cycle time (typical)
operation
—14-lead TSSOP, 8-lead SOIC
V
using special programming sequence
Block Lock
SCK
CC
SO
WP
SI
CC
detection and reset assertion
protection
V
CC
CC
Reset Logic
Command
Decode &
Register
Control
CPU Supervisor with 16Kbit SPI EEPROM
reset threshold voltage
Threshold
Logic
Data
CC
= 1V
Watchdog Transition
V
Detector
TRIP
X5163/X5165
www.xicor.com
Protect Logic
Register
4K Bits
4K Bits
8K Bits
+
Status
-
DESCRIPTION
These devices combine four popular functions, Power-
on Reset Control, Watchdog Timer, Supply Voltage
Supervision, and Block Lock Protect Serial EEPROM
Memory in one package. This combination lowers
system cost, reduces board space requirements, and
increases reliability.
Applying power to the device activates the power on
reset circuit which holds RESET/RESET active for a
period of time. This allows the power supply and oscilla-
tor to stabilize before the processor can execute code.
The Watchdog Timer provides an independent protection
mechanism for microcontrollers. When the microcon-
troller fails to restart a timer within a selectable time out
interval, the device activates the RESET/RESET signal.
The user selects the interval from three preset values.
Once selected, the interval does not change, even
after cycling the power.
The device’s low V
user’s system from low voltage conditions, resetting the
system when V
RESET/RESET is asserted until V
operating level and stabilizes. Five industry standard
V
circuits allow the threshold to be reprogrammed to meet
custom requirements or to fine-tune the threshold for
applications requiring higher precision.
TRIP
thresholds are available, however, Xicor’s unique
Timer Reset
Power on and
Low Voltage
Watchdog
Generation
Watchdog
Timebase
Reset &
Reset
CC
falls below the minimum V
Characteristics subject to change without notice.
CC
detection circuitry protects the
CC
returns to proper
RESET/RESET
X5163 = RESET
X5165 = RESET
CC
trip point.
1 of 21

Related parts for X5163

X5163 Summary of contents

Page 1

... Status Register Reset & 4K Bits Watchdog Timebase 4K Bits 8K Bits Power on and Low Voltage + Reset Generation V - TRIP www.xicor.com detection circuitry protects the CC falls below the minimum V trip point returns to proper CC RESET/RESET X5163 = RESET X5165 = RESET Characteristics subject to change without notice. ...

Page 2

... X5163/X5165 – Preliminary Information PIN DESCRIPTION Pin Pin (SOIC/PDIP) TSSOP Name 1 1 CS/WDI SCK 7 13 RESET/ RESET 3-5,10 PIN CONFIGURATION 8-Lead SOIC/PDIP 1 CS/WDI SO 2 X5163/ REV 1.1 3/5/01 Chip Select Input. CS HIGH, deselects the device and the SO output pin high impedance state ...

Page 3

... X5163/X5165 – Preliminary Information PRINCIPLES OF OPERATION Power On Reset Application of power to the X5163/X5165 activates a Power On Reset Circuit. This circuit goes active at 1V and pulls the RESET/RESET pin active. This signal prevents the system microprocessor from starting to operate with insufficient voltage or prior to stabilization of the oscillator ...

Page 4

... X5163/X5165 – Preliminary Information Figure 3. V Programming Sequence Flow Chart TRIP New V Applied = CC Old V applied + Error CC Error > -Emax Emax = Maximum Desired Error REV 1.1 3/5/01 V Programming TRIP Execute Reset V TRIP Sequence Set Applied = CC CC Desired V TRIP Execute New V Set V Old V TRIP Sequence ...

Page 5

... X5163/X5165 – Preliminary Information Figure 4. Sample V Reset Circuit TRIP 4.7K V TRIP Adj. Program SPI SERIAL MEMORY The memory portion of the device is a CMOS Serial EEPROM array with Xicor’s block lock protection. The array is internally organized The device features a Serial Peripheral Interface (SPI) and software proto- col allowing operation on a simple four-wire bus. The device utilizes Xicor’ ...

Page 6

... X5163/X5165 – Preliminary Information Table 1. Instruction Set Instruction Name Instruction Format* WREN 0000 0110 SFLB 0000 0000 WRDI/RFLB 0000 0100 RSDR 0000 0101 WRSR 0000 0001 READ 0000 0011 WRITE 0000 0010 Note: *Instructions are shown MSB in leftmost position. Instructions are transferred MSB first. ...

Page 7

... X5163/X5165 – Preliminary Information Figure 5. Read EEPROM Array Sequence SCK Instruction SI High Impedance SO In Circuit Programmable ROM Mode This mechanism protects the block lock and Watchdog bits from inadvertent corruption. In the locked state Programmable ROM Mode) the ( WP pin is LOW and the nonvolatile bit WPEN is “1”. ...

Page 8

... X5163/X5165 – Preliminary Information To write data to the EEPROM memory array, the user then issues the WRITE instruction followed by the 16 bit address and then the data to be written. Any unused address bits are specifi “0’s”. The WRITE operation minimally takes 32 clocks. CS must go low and remain low for the duration of the operation ...

Page 9

... X5163/X5165 – Preliminary Information Figure 7. Write Enable Latch Sequence CS SCK SI SO Figure 8. Write Sequence SCK Instruction SCK Data Byte Figure 9. Status Register Write Sequence CS 0 SCK SI High Impedance SO REV 1.1 3/5/ ...

Page 10

... X5163/X5165 – Preliminary Information SYMBOL TABLE WAVEFORM INPUTS OUTPUTS Must be Will be steady steady May change Will change from Low to from Low to High High May change Will change from High to from High to Low Low Don’t Care: Changing: Changes State Not Allowed ...

Page 11

... X5163/X5165 – Preliminary Information ABSOLUTE MAXIMUM RATINGS Temperature under bias ........................–65 to +135°C Storage temperature .............................–65 to +150°C Voltage on any pin with respect to V ......................................–1.0V to +7V SS D.C. output current ............................................... 5mA Lead temperature (soldering, 10 seconds)........ 300°C RECOMMENDED OPERATING CONDITIONS Temperature Min. Commercial 0° ...

Page 12

... X5163/X5165 – Preliminary Information CAPACITANCE T = +25° 1MHz Symbol (2) C Output Capacitance (SO, RESET, RESET) OUT (2) C Input Capacitance (SCK, SI, CS, WP) IN Notes: (1) V min. and V max. are for reference only and are not tested (2) This parameter is periodically sampled and not 100% tested. ...

Page 13

... X5163/X5165 – Preliminary Information Serial Input Timing CS t LEAD SCK MSB IN High Impedance SO Serial Output Timing Symbol 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 FO Notes: (3) This parameter is periodically sampled and not 100% tested ...

Page 14

... RESET (X5163) RESET (X5165) RESET Output Timing Symbol V Reset Trip Point Voltage, X5163-4.5A, X5163-4.5A TRIP Reset Trip Point Voltage, X5163, X5165 Reset Trip Point Voltage, X5163-2.7A, X5165-2.7A Reset Trip Point Voltage, X5163-2.7, X5165-2 Hysteresis (HIGH to LOW vs. LOW to HIGH V TH TRIP t ...

Page 15

... X5163/X5165 – Preliminary Information RESET/RESET Output Timing Symbol Parameter t Watchdog Time Out Period, WDO WD1 = 1, WD0 = 0 WD1 = 0, WD0 = 1 WD1 = 0, WD0 = Pulse Width to Reset the Watchdog CST t Reset Time Out RST V Set Conditions TRIP TRIP SCK Reset Conditions ...

Page 16

... X5163/X5165 – Preliminary Information V Programming Specifications: V TRIP Parameter t SCK V Program Voltage Setup time VPS TRIP t SCK V Program Voltage Hold time VPH TRIP t V Program Pulse Width P TRIP t V Level Setup time TSU TRIP t V Level Hold (stable) time THD TRIP t V Write Cycle Time ...

Page 17

... X5163/X5165 – Preliminary Information V Supply Current vs. Temperature ( Watchdog Timer Watchdog Timer Watchdog Timer Off ( –40 25 Temp (°C) V vs. Temperature (programmed at 25°C) TRIP 5.025 5.000 4.975 3.525 3.500 3.475 2.525 2.500 2.475 ...

Page 18

... X5163/X5165 – Preliminary Information 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) REV 1.1 3/5/01 Pin 1 0.014 (0.35) 0.019 (0.49) 0.188 (4.78) 0.197 (5.00) (4X) 7° 0.050 (1.27) X 45° ...

Page 19

... X5163/X5165 – Preliminary Information PACKAGING INFORMATION 0° - 8° See Detail “A” NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) REV 1.1 3/5/01 14-Lead Plastic, TSSOP, Package Type V .025 (.65) BSC .169 (4.3) .177 (4.5) .193 (4.9) .200 (5.1) .0075 (.19) .002 (.05) .0118 (.30) .006 (.15) .010 (.25) .019 (.50) .029 (.75) Detail A (20X) www.xicor.com .252 (6.4) BSC ...

Page 20

... X5163/X5165 – Preliminary Information Ordering Information TRIP Range Range Package 4.5-5.5V 4.5.4.75 8-Pin PDIP 8L SOIC 14L TSSOP 4.5-5.5V 4.25.4.5 8-Pin PDIP 8L SOIC 14L TSSOP 2.7-5.5V 2.85-3.0 8L SOIC 14L TSSOP 2.7-5.5V 2.55-2.7 8L SOIC 14L TSSOP Part Mark Information X5163/ REV 1.1 3/5/01 Operating Temperature Part Number RESET Range (Active LOW) ...

Page 21

... X5163/X5165 – Preliminary Information 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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