Replaces X25643/X25645
X5643/X5645
CPU Supervisor with 64Kbit SPI EEPROM
FEATURES • Selectable watchdog timer • Low VCC detection and reset assertion —Five standard reset threshold voltages —Re-program low VCC reset threshold voltage using special programming sequence —Reset signal valid to VCC = 1V • Determine watchdog or low voltage reset with a volatile flag bit • Long battery life with low power consumption — 3.3V, IOH = –1.0mA 2V < VCC ≤ 3.3V, IOH = –0.4mA VCC ≤ 2V, IOH = –0.25mA IOL = 1mA
V
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X5643/X5645
CAPACITANCE TA = +25°C, f = 1MHz, VCC = 5V Symbol
COUT(2) CIN
(2)
Test
Output Capacitance (SO, RESET/RESET) Input Capacitance (SCK, SI, CS, WP)
Max.
8 6
Unit
pF pF
Conditions
VOUT = 0V VIN = 0V
Notes: (1) VIL min. and VIH max. are for reference only and are not tested. (2) This parameter is periodically sampled and not 100% tested.
EQUIVALENT A.C. LOAD CIRCUIT AT 5V VCC
5V 2.06KΩ Output 3.03KΩ 100pF RESET/RESET 30pF 5V 4.6KΩ
A.C. TEST CONDITIONS
Input pulse levels Input rise and fall times Input and output timing level VCC x 0.1 to VCC x 0.9 10ns VCC x0.5
A.C. CHARACTERISTICS (Over recommended operating conditions, unless otherwise specified) Serial Input Timing 2.7–5.5V Symbol
fSCK tCYC tLEAD tLAG tWH tWL tSU tH tRI tFI
(3) (3)
Parameter
Clock frequency Cycle time CS lead time CS lag time Clock HIGH time Clock LOW time Data setup time Data hold time Input rise time Input fall time CS deselect time Write cycle time
Min.
0 500 250 250 200 250 50 50
Max.
2
Unit
MHz ns ns ns ns ns ns ns
100 100 500 10
ns ns ns ms
tCS tWC
(4)
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X5643/X5645
Serial Input Timing
tCS CS tLEAD SCK tSU SI MSB IN tH tRI tFI LSB IN tLAG
SO
High Impedance
Serial Output Timing 2.7–5.5V Symbol
fSCK tDIS tV tHO tRO tFO
(3) (3)
Parameter
Clock frequency Output disable time Output valid from clock low Output hold time Output rise time Output fall time
Min.
0
Max.
2 250 250
Unit
MHz ns ns ns ns ns
0 100 100
Notes: (3) This parameter is periodically sampled and not 100% tested. (4) tWC is the time from the rising edge of CS after a valid write sequence has been sent to the end of the self-timed internal nonvolatile write cycle.
Serial Output Timing
CS tCYC SCK tV SO MSB Out MSB–1 Out tHO tWL LSB Out tDIS tWH tLAG
SI
ADDR LSB IN
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X5643/X5645
Power-Up and Power-Down Timing
VTRIP VCC 0 Volts tR RESET (X5643) tPURST tPURST tF tRPD VTRIP
RESET (X5645)
RESET Output Timing Symbol
VTRIP
Parameter
Reset trip point voltage, X5643-4.5A, X5643-4.5A Reset trip point voltage, X5643, X5645 Reset trip point voltage, X5643-2.7A, X5645-2.7A Reset trip point voltage, X5643-2.7, X5645-2.7 VTRIP hysteresis (HIGH to LOW vs. LOW to HIGH VTRIP voltage) Power-up reset time out VCC detect to reset/output VCC fall time VCC rise time Reset valid VCC
Min.
4.5 4.25 2.85 2.55 100 100 100 1
Typ.
4.63 4.38 2.93 2.63 20 200
Max.
4.75 4.5 3.0 2.7 280 500
Unit
V
VTH tPURST tRPD
(5)
mV ms ns µs µs V
tF(5) tR(5) VRVALID
Note:
(5) This parameter is periodically sampled and not 100% tested.
CS/WDI vs. RESET/RESET Timing
CS/WDI
tCST
RESET
tWDO tRST tWDO tRST
RESET
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X5643/X5645
RESET/RESET Output Timing Symbol
tWDO
Parameter
Watchdog time out period, WD1 = 1, WD0 = 0 WD1 = 0, WD0 = 1 WD1 = 0, WD0 = 0 CS pulse width to reset the watchdog Reset time out
Min.
100 450 1 400 100
Typ.
200 600 1.4 200
Max.
300 800 2 300
Unit
ms ms sec ns ms
tCST tRST
VTRIP Set Conditions
tTHD VCC VTRIP tTSU tVPS tP tVPH tRP
CS
tVPS VP
tVPH
tVPO
SCK VP SI tVPO
VTRIP Reset Conditions
VCC* tRP tVPS tP tVP1
CS
tVPS
tVPH
tVPO
SCK
VCC
VP SI
tVPO
*VCC > Programmed VTRIP
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X5643/X5645
VTRIP Programming Specifications VCC = 1.7–5.5V; Temperature = 0°C to 70°C Parameter
tVPS tVPH tP tTSU tTHD tWC tRP tVPO VP VTRAN Vta1 Vta2 Vtr Vtv
Description
SCK VTRIP program voltage setup time SCK VTRIP program voltage hold time VTRIP program pulse width VTRIP level setup time VTRIP level hold (stable) time VTRIP write cycle time VTRIP program cycle recovery period (between successive programming cycles) SCK VTRIP program voltage off time before next cycle Programming voltage VTRIP programed voltage range Initial VTRIP program voltage accuracy (VCC applied–VTRIP) (programmed at 25°C) Subsequent VTRIP Program Voltage accuracy [(VCC applied–Vta1)—VTRIP) (programmed at 25°C) VTRIP Program Voltage repeatability (successive program operations) (programmed at 25°C) VTRIP program variation after programming (0–75°C). (programmed at 25°C)
Min.
1 1 1 10 10
Max.
Unit
µs µs µs µs ms
10 10 0 15 1.7 -0.1 -25 -25 -25 18 5.0 +0.4 +25 +25 +25
ms ms ms V V V mV mV mV
VTRIP programming parameters are periodically sampled and are not 100% tested.
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X5643/X5645
TYPICAL PERFORMANCE
VCC Supply Current vs. Temperature (ISB)
18 16 14 Reset (seconds) 12 Isb (µA) 10 8 6 4 2 0 –40 25 Temp (°C) 90 Watchdog Timer Off (VCC = 3V, 5V) Watchdog Timer On (VCC = 5V) Watchdog Timer On (VCC = 5V)
tWDO vs. Voltage/Temperature (WD1, 0 = 1, 1)
1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 1.7 2.4 3.1 3.8 Voltage 4.5 5.2 90°C 25°C –40°C
VTRIP vs. Temperature (programmed at 25°C)
5.025 5.000 4.975 3.525 Voltage 3.500 3.475 2.525 2.500 2.475 0 25 Temperature VTRIP = 2.5V VTRIP = 3.5V VTRIP = 5V
tWDO vs. Voltage/Temperature (WD1, 0 = 1, 0)
0.8 0.75
Reset (seconds)
0.7 0.65 0.6 0.55 0.5 0.45 90°C 25°C
–40°C
85
1.7
2.4
3.1 3.8 Voltage
4.5
5.2
tPURST vs. Temperature
205 200 195
tWDO vs. Voltage/Temperature (WD1, 0 0 = 0, 1)
205 200 195 Reset (seconds) 190 185 180 175 170 165 160 1.7 2.4 3.1 3.8 4.5 5.2 90°C –40°C 25°C
190 Time (ms) 185 180 175 170 165
160 –40
25 Degrees °C
90
Voltage
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X5643/X5645
PACKAGING INFORMATION 8-Lead Plastic Dual In-Line Package Type P
0.430 (10.92) 0.360 (9.14)
0.260 (6.60) 0.240 (6.10) Pin 1 Index Pin 1 0.300 (7.62) Ref. 0.060 (1.52) 0.020 (0.51)
Half Shoulder Width On All End Pins Optional Seating Plane 0.150 (3.81) 0.125 (3.18)
0.145 (3.68) 0.128 (3.25) 0.025 (0.64) 0.015 (0.38) 0.065 (1.65) 0.045 (1.14) 0.020 (0.51) 0.016 (0.41)
0.110 (2.79) 0.090 (2.29)
.073 (1.84) Max.
0.325 (8.25) 0.300 (7.62)
Typ. 0.010 (0.25)
0° 15°
NOTE: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH
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X5643/X5645
PACKAGING INFORMATION 14-Lead Plastic Small Outline Gullwing Package Type S
0.150 (3.80) 0.228 (5.80) 0.158 (4.00) 0.244 (6.20) Pin 1 Index Pin 1
0.014 (0.35) 0.020 (0.51) 0.336 (8.55) 0.345 (8.75) (4X) 7°
0.053 (1.35) 0.069 (1.75) 0.004 (0.10) 0.010 (0.25)
0.050 (1.27)
0.050" Typical 0.010 (0.25) 0.020 (0.50) X 45° 0.050" Typical 0° – 8° 0.0075 (0.19) 0.010 (0.25) 0.016 (0.410) 0.037 (0.937) 0.030" Typical 14 Places 0.250"
FOOTPRINT
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
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X5643/X5645
Ordering Information VCC Range
4.5-5.5V
VTRIP Range
4.5.4.75
Package
8 pin PDIP 14L SOIC
Operating Temperature Range
0–70°C 0–70°C -40–85°C 0–70°C 0–70°C -40–85°C 0–70°C 0–70°C
Part Number RESET (Active LOW)
X5643P-4.5A X5643S14-4.5A X5643S14I-4.5A X5643P X5643S14 X5643S14I X5643S14-2.7A X5643S14-2.7
Part Number RESET (Active HIGH)
X5645P-4.5A X5645S14-4.5A X5645S14I-4.5A X5645P X5645S14 X5645S14I X5645S14-2.7A X5645S14-2.7
4.5-5.5V
4.25.4.5
8 pin PDIP 14L SOIC
2.7-5.5V 2.7-5.5V
2.85-3.0 2.55-2.7
14L SOIC 14L SOIC
Part Mark Information X5643/45 W X P = 8-Lead PDIP S14 = 14 Lead SOIC Blank = 5V ±10%, 0°C to +70°C, VTRIP = 4.25-4.5 AL = 5V±10%, 0°C to +70°C, VTRIP = 4.5-4.75 I = 5V ±10%, –40°C to +85°C, VTRIP = 4.25-4.5 AM = 5V ±10%, –40°C to +85°C, VTRIP = 4.5-4.75 F = 2.7V to 5.5V, 0°C to +70°C, VTRIP = 2.55-2.7 AN = 2.7V to 5.5V, 0°C to +70°C, VTRIP = 2.85-3.0 G = 2.7V to 5.5V, –40°C to +85°C, VTRIP = 2.55-2.7 AP = 2.7V to 5.5V, –40°C to +85°C, VTRIP = 2.85-3.0
LIMITED WARRANTY
©Xicor, Inc. 2001 Patents Pending
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, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. 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, or licenses are implied. COPYRIGHTS AND TRADEMARKS Xicor, Inc., the Xicor logo, E2POT, XDCP, XBGA, AUTOSTORE, Direct Write cell, Concurrent Read-Write, PASS, MPS, PushPOT, Block Lock, IdentiPROM, E2KEY, X24C16, SecureFlash, and SerialFlash are all trademarks or registered trademarks of Xicor, Inc. All other brand and product names mentioned herein are used for identification purposes only, and are trademarks or registered trademarks of their respective holders. U.S. PATENTS Xicor products are covered by one or more of the following U.S. Patents: 4,326,134; 4,393,481; 4,404,475; 4,450,402; 4,486,769; 4,488,060; 4,520,461; 4,533,846; 4,599,706; 4,617,652; 4,668,932; 4,752,912; 4,829,482; 4,874,967; 4,883,976; 4,980,859; 5,012,132; 5,003,197; 5,023,694; 5,084,667; 5,153,880; 5,153,691; 5,161,137; 5,219,774; 5,270,927; 5,324,676; 5,434,396; 5,544,103; 5,587,573; 5,835,409; 5,977,585. Foreign patents and additional patents pending. LIFE RELATED POLICY In situations where semiconductor component failure may endanger life, system designers using this product should design the system with appropriate error detection and correction, redundancy and back-up features to prevent such an occurrence. Xicor’s products are not authorized for use in critical components in life support devices or systems. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
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