X40626V14I-2.7 Intersil, X40626V14I-2.7 Datasheet

IC SUPERVISOR CPU DUAL 14-TSSOP

X40626V14I-2.7

Manufacturer Part Number
X40626V14I-2.7
Description
IC SUPERVISOR CPU DUAL 14-TSSOP
Manufacturer
Intersil
Type
Multi-Voltage Supervisorr
Datasheet

Specifications of X40626V14I-2.7

Number Of Voltages Monitored
2
Output
Open Drain or Open Collector
Reset
Active Low
Reset Timeout
100 ms Minimum
Voltage - Threshold
2.63V, 2.63V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
14-TSSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Dual Voltage CPU Supervisor with 64K
Serial EEPROM
FEATURES
• Dual voltage monitoring
• Watchdog timer with selectable timeout intervals
• Low V
• Low power CMOS
• 64Kbits of EEPROM
• Built-in inadvertent write protection
• 400kHz 2-wire interface
BLOCK DIAGRAM
—V
—Four standard reset threshold voltages
—User programmable V
—Reset signal valid to V
—20µA max standby current, watchdog on
—1µA standby current, watchdog OFF
—64 byte page size
—Power-up/power-down protection circuitry
—Protect 0, 1/4, 1/2, all or 64, 128, 256 or 512
—Slave addressing supports up to 4 devices on
bytes of EEPROM array with programmable
Block Lock
the same bus
2Mon
PRELIMINARY
V2MON
CC
V
SDA
SCL
CC
WP
S0
S1
operates independent of V
detection and reset assertion
protection
®
V
1
TRIP
CC
Reset logic
CC
Command
Register
Decode &
Control
Logic
Threshold
Data
=1V
Data Sheet
threshold
Watchdog Transition
Detector
CC
V2 Monitor
V
TRIP
Logic
1-888-INTERSIL or 1-888-352-6832
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Protect Logic
EEPROM
Register
64KB
Array
+
Status
-
• 2.7V to 5.5V power supply operation
• Available Packages
DESCRIPTION
The X40626 combines four popular functions, Power-on
Reset Control, Watchdog Timer, Dual Supply Voltage
Supervision, and Serial EEPROM Memory in one pack-
age. 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 active for a period of
time. This allows the power supply and oscillator to stabi-
lize before the processor can execute code.
The Watchdog Timer provides an independent protec-
tion mechanism for microcontrollers. When the micro-
controller fails to restart a timer within a selectable time-
out interval, the device activates the RESET signal. The
user selects the interval from three preset values. Once
selected, the interval does not change, even after cycling
the power.
V
+
-
—14-lead SOIC
—14-lead TSSOP
TRIP2
March 28, 2005
All other trademarks mentioned are the property of their respective owners.
Power-on and
Timer Reset
|
Low Voltage
Generation
Watchdog
Watchdog
Timebase
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Reset &
Reset
Copyright Intersil Americas Inc. 2005. All Rights Reserved
64K, 8K x 8 Bit
V2FAIL
RESET
X40626
FN8119.0

Related parts for X40626V14I-2.7

X40626V14I-2.7 Summary of contents

Page 1

... Generation - V TRIP CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 1-888-352-6832 Intersil (and design registered trademark of Intersil Americas Inc. All other trademarks mentioned are the property of their respective owners. X40626 64K Bit FN8119.0 V2FAIL RESET Reset Copyright Intersil Americas Inc. 2005. All Rights Reserved ...

Page 2

... V CC point. RESET is asserted until V operating level and stabilizes. Four industry standard Vtrip thresholds are available. However, Intersil’s unique circuits allow the threshold to be reprogrammed to meet custom requirements or to fine-tune the threshold for applications requiring higher precision. ...

Page 3

PRINCIPLES OF OPERATION Power-on Reset Application of power to the X40626 activates a power- on Reset Circuit that pulls the RESET pin active. This signal provides several benefits. – It prevents the system microprocessor from starting to operate with insufficient ...

Page 4

Resetting the V Voltage TRIP This procedure is used to set the V voltage level. For example, if the current V and the new V must be 4.0V, then the V TRIP be reset. When V is reset, the new ...

Page 5

Figure 4. V Programming Sequence TRIP New V applied = X Old V applied + | Error | X Error < MDE 5 X40626 V Programming TRIPX Desired No V TRIPX Present Value YES Set V = Desired V X ...

Page 6

Control Register The Control Register provides the user a mechanism for changing the Block Lock and Watchdog Timer set- tings. The Block Lock and Watchdog Timer bits are nonvolatile and do not change when power is removed. The Control Register ...

Page 7

Table 1. Write Protect Enable Bit and WP Pin Function Memory Array not WP WPEN Block Protected LOW X Writes OK HIGH 0 Writes OK HIGH 1 Writes OK Writing to the Control Register Changing any of the nonvolatile bits ...

Page 8

Figure 5. Valid Data Changes on the SDA Bus SCL SDA Serial Start Condition All commands are preceded by the start condition, which is a HIGH to LOW transition of SDA when SCL is HIGH. The device continuously monitors the ...

Page 9

Figure 7. Acknowledge Response From Receiver SCL from Master Data Output from Data Output from Receiver Start Serial Write Operations Byte Write For a write operation, the device requires the Slave Address Byte and a Word Address Byte. This gives ...

Page 10

Figure 9. Page Write Operation S T Signals from Slave A the Master Address SDA Bus 1 Signals from the Slave Figure 10. Writing 12 bytes to a 64-byte page ...

Page 11

Figure 11. Acknowledge Polling Sequence Byte load completed by issuing STOP. Enter ACK Polling Issue START Issue Slave Address Byte (Read or Write) NO ACK returned? YES NO Nonvolatile Cycle complete. Continue command sequence? YES Continue Normal Read or Write ...

Page 12

Random Read Random read operation allows the master to access any memory location in the array. Prior to issuing the Slave Address Byte with the R/W bit set to one, the master must first perform a “dummy” write operation. The ...

Page 13

Figure 14. Sequential Read Sequence Signals from Slave the Master Address SDA Bus Signals from the Slave X40626 Addressing Slave Address Byte Following a start condition, the master must output a Slave Address Byte. This ...

Page 14

Figure 15. X40626 Addressing Device Identifier 1 A15 A7 D7 Operational Notes The device powers-up in the following state: – The device is in the low power standby state. – The WEL bit is set to ‘0’. In this state ...

Page 15

ABSOLUTE MAXIMUM RATINGS Temperature under bias ................... -65°C to +135°C Storage temperature ........................ -65°C to +150°C Voltage on any pin with respect to VSS... -1.0V to +7V D.C. output current (sink) ................................... 10mA Lead temperature (soldering, 10 seconds) ........ 300°C ...

Page 16

CAPACITANCE (T = 25° 1.0 MHz Symbol (4) C Output Capacitance (SDA, RESET, V2FAIL) OUT (4) C Input Capacitance (SCL, WP, S0, S1) IN Notes: (4) This parameter is periodically sampled and not 100% tested. EQUIVALENT ...

Page 17

TIMING DIAGRAMS Bus Timing t F SCL t SU:STA t HD:STA SDA IN SDA OUT WP Pin Timing SCL SDA IN WP Write Cycle Timing SCL SDA 8th bit of Last Byte Nonvolatile Write Cycle Timing Symbol (1) t Write ...

Page 18

Power-Up and Power-Down Timing V /V TRIP TRIP2 V /V2MON CC 0 Volts t R RESET/V2FAIL RESET Output Timing Symbol t Power-up Reset Timeout PURST ( Detect to Reset/Output (Falling Edge) RPD CC ( /V2MON Fall ...

Page 19

RESET Output Timing Symbol Parameter t Watchdog Timeout Period, WDO WD1 = 1, WD0 = 1 (factory setting) WD1 = 1, WD0 = 0 WD1 = 0, WD0 = 1 WD1 = 0, WD0 = 0 t Reset Timeout RST ...

Page 20

Packaging Information 14-Lead Plastic Small Outline Gullwing Package Type S Pin 1 Index Pin 1 0.014 (0.35) 0.020 (0.51) (4X) 7° 0.050 (1.27) 0.010 (0.25) 0.020 (0.50) 0° - 8° 0.016 (0.410) 0.037 (0.937) NOTE: ALL DIMENSIONS IN INCHES (IN ...

Page 21

PACKAGING INFORMATION 0° - 8° See Detail “A” NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 21 X40626 14-Lead Plastic, TSSOP, Package Code V14 .025 (.65) BSC .169 (4.3) .177 (4.5) .193 (4.9) .200 (5.1) .0075 (.19) .002 (.05) ...

Page 22

... SOIC/TSSOP X40626 SOIC V = TSSOP YYWWXX XX – Part Mark WW – Workweek YY – Year Part Number RESET Park (Active LOW) Mark X40626S14-4.5A AL X40626S14I-4.5A AM X40626V14-4.5A AL X40626V14I-4.5A AM X40626S14 blank X40626S14I I X40626V14 blank X40626V14I I X40626S14-2.7A AN X40626S14I-2.7A AP X40626V14-2.7A BN X40626V14I-2.7A AP X40626S14-2.7 F X40626S14I-2.7 G X40626V14-2.7 F X40626V14I-2.7 G FN8119.0 March 28, 2005 ...

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