X40235S16I-A Intersil, X40235S16I-A Datasheet

IC VOLTAGE MON TRPL EE 16-SOIC

X40235S16I-A

Manufacturer Part Number
X40235S16I-A
Description
IC VOLTAGE MON TRPL EE 16-SOIC
Manufacturer
Intersil
Type
Multi-Voltage Supervisorr
Datasheet

Specifications of X40235S16I-A

Number Of Voltages Monitored
3
Output
Open Drain, Open Drain
Reset
Active High/Active Low
Reset Timeout
Adjustable/Selectable
Voltage - Threshold
1.75V, 2.2V, 2.95V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.300", 7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Triple Voltage Monitors, POR, 2 kbit
EEPROM Memory, and Single/Dual DCP
FEATURES
• Triple Voltage Monitors
• 2-Wire industry standard Serial Interface
• 2 kbit EEPROM with Write Protect & Block Lock
• Digitally Controlled Potentiometers (DCP)
• Single Supply Operation
• 16 Pin SOIC (300) package
BLOCK DIAGRAM
©2000 Intersil Inc., Patents Pending (VTRIP
X4023X Family Selector Guide
—User Programmable Threshold Voltage
—Power-on Reset (POR) Circuitry
—Software Selectable Reset timeout
—Manual Reset Input
—Total Resistance
—Nonvolatile wiper position
—Write Protect Function
—2.7V to 5.5V
—SOIC
256 Tap = 100kΩ, 100 Tap or 64 Tap = 10kΩ
Manual Reset (MR)
V3MON
V2MON
SDA
SCL
X= 256 tap 100 tap 64 Tap
WP
V
V
1
3
5
7
9
CC
SS
1
1
1
RESET LOGIC
THRESHOLD
®
COMMAND
DECODE &
REGISTER
CONTROL
LOGIC
1,2,3
DATA
1
are user programmable)
1
1
Data Sheet
1
1
VTRIP
VTRIP
VTRIP
8
3
2
1
X40231, X40233, X40235, X40237, X40239
-
+
-
+
4
+
1-888-INTERSIL or 1-888-352-6832
TM
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
PROTECT LOGIC
REGISTER
EEPROM
ARRAY
2 kbit
CR
2
DESCRIPTION
The X4023x family of Integrated System Manage-
ment ICs combine CPU Supervisor functions (V
Power-onpower-on Reset (POR) circuitry, two addi-
tional programmable voltage monitor inputs with soft-
ware and hardware indicators), integrated EEPROM
with Block Lock
Digitally Controlled Potentiometers (XDCP). All func-
tions of the X4023x are accessed by an industry
standard 2-Wire serial interface.
APPLICATIONS
The DCP of the X4023x may be utilized to software
control analog voltages for:
– LCD contrast, LCD purity, or Backlight control.
– Power Supply settings such as PWM frequency,
– Reference voltage setting (e.g. DDR-SDRAM SSTL-2)
The 2 kbit integrated EEPROM may be used to store
ID, manufacturer data, maintenance data and module
definition data.
The programmable POR circuit insures V
before RESET is removed and protects against
brown-outs and power failures. The programmable
voltage monitors have on-chip independent reference
alarm levels. With separate outputs, the voltage moni-
tors can be used for power-on sequencing.
Voltage Trimming or Margining (temperature offset
control).
LOW VOLTAGE
GENERATION
POWER-ON /
All other trademarks mentioned are the property of their respective owners.
April 11, 2005
RESET
Integrated System Management IC
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
NONVOLATILE
NONVOLATILE
REGISTER
COUNTER
COUNTER
REGISTER
MEMORY
WIPER
MEMORY
WIPER
8 - BIT
8 - BIT
TM
Copyright Intersil Americas Inc. 2005. All Rights Reserved
protection and one or two Intersil
V3FAIL
V2FAIL
RESET
R
R
R
R
H
W
H
W
64 or 100 Tap DCP
Optional
256 Tap DCP
FN8115.0
CC
is stable
CC

Related parts for X40235S16I-A

X40235S16I-A Summary of contents

Page 1

... Tap DCP R COUNTER W REGISTER 8 - BIT NONVOLATILE MEMORY R H WIPER Optional COUNTER R W REGISTER 64 or 100 Tap DCP 8 - BIT NONVOLATILE MEMORY V3FAIL V2FAIL RESET Intersil (and design registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2005. All Rights Reserved CC is stable ...

Page 2

X40231, X40233, X40235, X40237, X40239 PIN CONFIGURATION SINGLE XDCP X40231 16 Pin SOIC RESET V3MON 14 V2FAIL V3FAIL 4 13 V2MON ...

Page 3

X40231, X40233, X40235, X40237, X40239 X40231 PIN ASSIGNMENT SOIC Name Connect Connect V3MON Voltage Monitor Input. V3MON i s the input to a non-inverting voltage comparator circuit. When the V3MON input is higher than ...

Page 4

X40231, X40233, X40235, X40237, X40239 X40233 PIN ASSIGNMENT SOIC Name Connect Connect V3MON Voltage Monitor Input. V3MON is the input to a non-inverting voltage comparator circuit. When the V3MON input is higher than 3 ...

Page 5

X40231, X40233, X40235, X40237, X40239 X40235 PIN ASSIGNMENT SOIC Name R 1 Connection to end of resistor array for (the 256 Tap) DCP Connection to terminal equivalent to the “Wiper” mechanical potentiometer for DCP. W2 ...

Page 6

X40231, X40233, X40235, X40237, X40239 X40237 PIN ASSIGNMENT SOIC Name R 1 Connection to end of resistor array for (the 256 Tap) DCP2 Connection to terminal equivalent to the “Wiper” mechanical potentiometer for DCP2. W2 ...

Page 7

X40231, X40233, X40235, X40237, X40239 X40239 PIN ASSIGNMENT SOIC Name R 1 Connection to end of resistor array for (the 256 Tap) DCP2 Connection to terminal equivalent to the “Wiper” mechanical potentiometer for DCP2. W2 ...

Page 8

... Data Stable Data Change Valid Data Changes on the SDA Bus Intersil’s unique circuits allow for all internal trip voltages to be individually programmed with high accuracy, either by Intersil at final test or by the user during their devices production process. Some distributors offer V reprogramming as a value added service ...

Page 9

X40231, X40233, X40235, X40237, X40239 SCL SDA Figure 2. Serial Start Condition All commands are preceded by the START condition, which is a HIGH to LOW transition of SDA while SCL is HIGH. The device continuously monitors the SDA and ...

Page 10

X40231, X40233, X40235, X40237, X40239 Depending upon the operation to be performed on each of these individual parts Byte protocol is used. All operations however must begin with the Slave Address Byte being issued on ...

Page 11

X40231, X40233, X40235, X40237, X40239 Byte load completed by issuing STOP. Enter ACK Polling Issue START Issue Slave Address Byte (Read or Write) NO ACK returned? YES NO High Voltage Cycle complete. Continue command sequence? YES Continue normal Read or ...

Page 12

X40231, X40233, X40235, X40237, X40239 TRANS 0 A nonvolatile write to a DCP will change the “wiper posi- tion” by simultaneously writing new data to the associ- ated WCR and NVM. Therefore, the new “wiper position” setting ...

Page 13

X40231, X40233, X40235, X40237, X40239 SLAVE ADDRESS BYTE T Figure 9. DCP Write Operation A write to DCPx (x=0,1,2) can be performed using the three byte command sequence shown ...

Page 14

X40231, X40233, X40235, X40237, X40239 S Signals from t Slave the Master a Address r t SDA Bus Signals from the Slave DCP Read Operation A read of DCPx (x = 0,1,2) can be performed using ...

Page 15

X40231, X40233, X40235, X40237, X40239 S Signals from t a the Master r t SDA Bus Signals from the Slave Figure 12. EEPROM Page Write Operation EEPROM Byte Write In order to perform an EEPROM Byte Write operation to the ...

Page 16

X40231, X40233, X40235, X40237, X40239 7 bytes Figure 13. Example: Writing 12 bytes to a 16-byte page starting at location 11. Signals from the Master Figure 14. Current EEPROM Address Read Sequence Current EEPROM Address Read Internally the device contains ...

Page 17

X40231, X40233, X40235, X40237, X40239 Signals from S the Master SDA Bus Signals from the Slave Figure 15. Random EEPROM Address Read Sequence The master terminates the read operation ...

Page 18

X40231, X40233, X40235, X40237, X40239 CS3 CS7 CS6 CS4 CS5 PUP1 BL1 V2FS V3FS BL0 Bit(s) Description WEL Write Enable Latch bit RWEL Register Write Enable Latch bit V2FS V2MON Output Flag Status V3FS V3MON Output Flag ...

Page 19

X40231, X40233, X40235, X40237, X40239 When the Block Lock bits of the CR register are set to something other than BL1 = 0 and BL0 = 0, then the “wiper position” of the DCPs cannot be changed - i.e. DCP ...

Page 20

X40231, X40233, X40235, X40237, X40239 Prior to writing to the CR register, the WEL and RWEL bits must be set using a two step process, with the whole sequence requiring 3 steps —Write a 02H to the CR Register to ...

Page 21

X40231, X40233, X40235, X40237, X40239 MR: Manual Reset The RESET output can be forced HIGH externally using the Manual Reset (MR) input de-bounced, TTL compatible input, and so it may be operated by con- necting a push-button ...

Page 22

X40231, X40233, X40235, X40237, X40239 V2MON Monitoring The X4023x asserts the V2FAIL output HIGH if the voltage V2MON exceeds the corresponding V threshold (See Figure 21). The bit V2FS in the CR reg- ister is then set to a “0” ...

Page 23

X40231, X40233, X40235, X40237, X40239 Setting a Higher V Voltage (x = 1,2,3) TRIPx To set a V threshold to a new voltage which is TRIPx higher than the present threshold, the user must apply the desired V threshold voltage ...

Page 24

X40231, X40233, X40235, X40237, X40239 For example, the desired threshold for V 3.0 V, and a test voltage of 3.4 V was applied to the input pin V2MON (after applying power to V age is decreased, and found to trip ...

Page 25

X40231, X40233, X40235, X40237, X40239 ABSOLUTE MAXIMUM RATINGS Temperature under Bias Storage Temperature Voltage on WP pin (With respect to VSS) Voltage on other pins (With respect to VSS) Voltage Voltage ...

Page 26

X40231, X40233, X40235, X40237, X40239 TIMING DIAGRAMS Figure 27. Bus Timing t F SCL t SU:STA t HD:STA SDA IN SDA OUT Figure 28. WP Pin Timing START SCL SDA IN WP Figure 29. Write Cycle Timing SCL 8th bit ...

Page 27

X40231, X40233, X40235, X40237, X40239 Figure 30. Power-Up and Power-Down Timing Volts RESET 0 Volts MR 0 Volts Figure 31. Manual Reset Timing Diagram MR RESET V CC Figure 32. V2MON, V3MON Timing Diagram t ...

Page 28

X40231, X40233, X40235, X40237, X40239 Figure 33. V Programming Timing Diagram (x=1,2,3). TRIPX V , V2MON, V3MON CC t TSU VPS SCL SDA NOTE : V1/V Figure 34. DCP “Wiper Position” Timing Rwx (x=0,1,2) R WX(n) ...

Page 29

X40231, X40233, X40235, X40237, X40239 D.C. OPERATING CHARACTERISTICS Symbol Parameter V CC Current into V Pin (X4023x: Active) CC (1) I Read memory array CC 1 Write nonvolatile memory V Current into V Pin (X4023x:Standby) CC With 2-Wire bus activity ...

Page 30

X40231, X40233, X40235, X40237, X40239 A.C. CHARACTERISTICS (See Figure 27, Figure 28, Figure 29) Symbol f SCL Clock Frequency SCL (5) t Pulse width Suppression Time at inputs IN t SCL LOW to SDA Data Out Valid AA t Time ...

Page 31

X40231, X40233, X40235, X40237, X40239 POTENTIOMETER CHARACTERISTICS Symbol Parameter R End to End Resistance Tolerance TOL V R Terminal Voltage (x = 0,1,2) RHx Terminal Voltage (x = 0,1,2) RLx L (1) P Power Rating R R ...

Page 32

X40231, X40233, X40235, X40237, X40239 1,2,3) PROGRAMMING PARAMETERS (See Figure 33) TRIPX Parameter t V Program Enable Voltage Setup time VPS TRIPx t V Program Enable Voltage Hold time VPH TRIPx t V Setup time TSU TRIPx ...

Page 33

X40231, X40233, X40235, X40237, X40239 APPENDIX 1 DCP1 (100 Tap) Tap position to Data Byte translation Table Tap Position Decimal ...

Page 34

X40231, X40233, X40235, X40237, X40239 APPENDIX 2 DCP1 (100 Tap) tap position to Data Byte translation algorithm example. unsigned DCP1_TAP_Position(int tap_pos) { int block; int i; int offset; int wcr_val; offset = 0; block = tap_pos / 25; if (block ...

Page 35

X40231, X40233, X40235, X40237, X40239 16-Lead Plastic, SOIC (300-mil body), Package Code S16 PIN 1 INDEX PIN 1 0.014 (0.35) 0.020 (0.51) (4X) 7° 0.050 (1.27) 0.010 (0.25) X 45° 0.020 (0.50) 0° ° 0.015 (0.40) 0.050 (1.27) ...

Page 36

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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