INTERSIL X4003M8I-2.7

X4003, X4005
®
Data Sheet
March 15, 2005
CPU Supervisor
FN8113.0
DESCRIPTION
FEATURES
• Selectable watchdog timer
—Select 200ms, 600ms, 1.4s, off
• Low VCC detection and reset assertion
—Five standard reset threshold voltages
nominal 4.62V, 4.38V, 2.92V, 2.68V, 1.75V
—Adjust low VCC reset threshold voltage using
special programming sequence
—Reset signal valid to VCC = 1V
• Low power CMOS
—12µA typical standby current, watchdog on
—800nA typical standby current watchdog off
—3mA active current
• 400kHz I2C interface
• 1.8V to 5.5V power supply operation
• Available packages
—8-lead SOIC
—8-lead MSOP
These devices combine three popular functions,
Power-on Reset Control, Watchdog Timer, and Supply
Voltage Supervision. 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 oscillator to stabilize before the processor can execute code.
The Watchdog Timer provides an independent
protection mechanism for microcontrollers. When the
microcontroller 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 VCC detection circuitry protects the
user’s system from low voltage conditions, resetting the
system when VCC falls below the minimum VCC trip
point. RESET/RESET is asserted until VCC returns to
proper operating level and stabilizes. Five 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.
BLOCK DIAGRAM
Watchdog Transition
Detector
Watchdog
Timer Reset
WP
SDA
SCL
RESET (X4003)
Data
Register
RESET (X4005)
Control
Register
Command
Decode &
Control
Logic
Reset &
Watchdog
Timebase
VCC Threshold
Reset logic
VCC
+
VTRIP
1
-
Power-on and
Low Voltage
Reset
Generation
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
X4003, X4005
PIN CONFIGURATION
8-Pin JEDEC SOIC, MSOP
1
2
3
4
NC
NC
RESET
VSS
VCC
8
7
6
5
WP
SCL
SDA
PIN DESCRIPTION
Pin
(SOIC/DIP)
Pin
TSSOP
Pin
(MSOP)
1
3
NC
No internal connections
2
4
NC
No internal connections
3
5
2
RESET/
RESET
4
6
3
VSS
Ground
5
7
4
SDA
Serial Data. SDA is a bidirectional pin used to transfer data into
and out of the device. It has an open drain output and may be wire
ORed with other open drain or open collector outputs. This pin requires a pull up resistor and the input buffer is
always active (not gated).
Watchdog Input. A HIGH to LOW transition on the SDA while
SCL also toggles from HIGH to LOW follow by a stop condition resets the watchdog timer. The absence of this procedure within the
watchdog time out period results in RESET/RESET going active.
6
8
5
SCL
Serial Clock. The serial clock controls the serial bus timing for
data input and output.
7
1
6
WP
Write Protect. WP HIGH prevents changes to the watchdog
timer setting.
8
2
1
VCC
Supply voltage
2
Name
Function
Reset Output. RESET/RESET is an active LOW/HIGH, open
drain output which goes active whenever VCC falls below the minimum VCC sense level. It will remain active until VCC rises above
the minimum VCC sense level for 250ms. RESET/
RESET goes active if the watchdog timer is enabled and SDA remains either HIGH or LOW longer than the selectable Watchdog
time out period. A falling edge of SDA, while SCL also toggles from
HIGH to LOW followed by a stop condition
resets the watchdog timer. RESET/RESET goes active on powerup and remains active for 250ms after the power supply stabilizes.
FN8113.0
March 15, 2005
X4003, X4005
signal remains active until the voltage drops below 1V.
It also remains active until VCC returns and exceeds
VTRIP for 200ms.
PRINCIPLES OF OPERATION
Power-on Reset
Application of power to the X4003/X4005 activates a
power-on reset circuit that pulls the RESET/RESET
pin active. This signal provides several benefits.
– It prevents the system microprocessor from starting
to operate with insufficient voltage.
– It prevents the processor from operating prior to
stabilization of the oscillator.
– It allows time for an FPGA to download its configuration prior to initialization of the circuit.
When VCC exceeds the device VTRIP threshold value for
200ms (nominal) the circuit releases RESET/RESET,
allowing the system to begin operation.
Watchdog Timer
The watchdog timer circuit monitors the microprocessor activity by monitoring the SDA and SCL pins. The
microprocessor must toggle the SDA pin HIGH to
LOW periodically, while SCL also toggles from HIGH
to LOW (this is a start bit) followed by a stop condition
prior to the expiration of the watchdog time out period
to prevent a RESET/RESET signal. The state of two
nonvolatile control bits in the control register determine the watchdog timer period. The microprocessor
can change these watchdog bits, or they may be
“locked” by tying the WP pin HIGH.
Figure 1. Watchdog Restart
Low Voltage Monitoring
During operation, the X4003/X4005 monitors the VCC
level and asserts RESET/RESET if supply voltage falls
below a preset minimum VTRIP. The RESET/RESET
signal prevents the microprocessor from operating in a
power fail or brownout condition. The RESET/RESET
.6µs
.6µs
SCL
SDA
Start
Condition
Restart
Stop
Condition
Set VTRIP Level Sequence (VCC = desired VTRIP value)
VP = 15-18V
WP
0 1 2 3 4 5 6 7
0 1 2 3 4 5 6 7
0 1 2 3 4 5 6 7
SCL
SDA
A0h
01h
00h
VCC THRESHOLD RESET PROCEDURE
Setting the VTRIP Voltage
The X4003/X4005 is shipped with a standard VCC
threshold (VTRIP) voltage. This value will not change
over normal operating and storage conditions. However, in applications where the standard VTRIP is not
exactly right, or if higher precision is needed in the
VTRIP value, the X4003/X4005 threshold may be
adjusted. The procedure is described below, and uses
the application of a nonvolatile control signal.
This procedure is used to set the VTRIP to a higher
voltage value. For example, if the current VTRIP is 4.4V
and the new VTRIP is 4.6V, this procedure will directly
make the change. If the new setting is to be lower than
the current setting, then it is necessary to reset the trip
point before setting the new value.
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X4003, X4005
be reset. When VTRIP is reset, the new VTRIP is something less than 1.7V. This procedure must be used to
set the voltage to a lower value.
To set the new VTRIP voltage, apply the desired VTRIP
threshold voltage to the VCC pin and tie the WP pin to
the programming voltage VP. Then write data 00hto
address 01h. The stop bit following a valid write operation initiates the VTRIP programing sequence. Bring WP
LOW to complete the operation.
To reset the new VTRIP voltage, apply the desired
VTRIP threshold voltage to the VCC pin and tie the WP
pin to the programming voltage VP. Then write 00h to
address 03h. The stop bit of a valid write operation initiates the VTRIP programming sequence. Bring WP
LOW to complete the operation.
Resetting the VTRIP Voltage
This procedure is used to set the VTRIP to a “native”
voltage level. For example, if the current VTRIP is 4.4V
and the new VTRIP must be 4.0V, then the VTRIP must
Figure 2. Reset VTRIP Level Sequence (VCC > 3V. WP = 15-18V)
VP = 15 - 18V
WP
0 1 2 3 4 5 6 7
0 1 2 3 4 5 6 7
0 1 2 3 4 5 6 7
SCL
SDA
A0h
00h
03h
Figure 3. Sample VTRIP Reset Circuit
VP
Adjust
4.7K
RESET/
RESET
VTRIP
Adj.
1
2
7
3 X4003/05 6
4
µC
8
5
Run
SCL
SDA
4
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Figure 4. VTRIP Programming Sequence
VTRIP Programming
Execute
Reset VTRIP
Sequence
Set VCC = VCC Applied =
Desired VTRIP
Execute
Set VTRIP
Sequence
New VCC Applied =
Old VCC Applied - Error
New VCC Applied =
Old VCC applied + Error
Apply 5V to VCC
Execute
Reset VTRIP
Sequence
Decrement VCC
(VCC = VCC - 50mV)
RESET pin
goes active?
NO
YES
Error ≥ Emax
Error ≤ –Emax
Measured VTRIP Desired VTRIP
-Emax < Error < Emax
Emax = Maximum Allowable VTRIP Error
DONE
Control Register
The control register provides the user a mechanism
for changing the watchdog timer settings. watchdog
timer bits are nonvolatile and do not change when
power is removed.
The control register is accessed with a special preamble
in the slave byte (1011) and is located at address 1FFh.
It can only be modified by performing a control register
write operation. Only one data byte is allowed for each
register write operation. Prior to writing to the control register, the WEL and RWEL bits must be set using a two
step process, with the whole sequence requiring 3 steps.
See "Writing to the Control Register" below.
5
The user must issue a stop after sending the control
byte to the register to initiate the nonvolatile cycle that
stores WD1 and WD0. The X4003/X4005 will not
acknowledge any data bytes written after the first byte
is entered.
The state of the control register can be read at any
time by performing a serial read operation. Only one
byte is read by each register read operation. The
X4003/X4005 resets itself after the first byte is read.
The master should supply a stop condition to be consistent with the bus protocol, but a stop is not required
to end this operation.
7
6
5
4
3
2
1
0
0
WD1
WD0
0
0
RWEL
WEL
0
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RWEL: Register Write Enable Latch (Volatile)
The RWEL bit must be set to “1” prior to a write to the
control register.
WEL: Write Enable Latch (Volatile)
The WEL bit controls the access to the control register
during a write operation. This bit is a volatile latch that
powers up in the LOW (disabled) state. While the WEL
bit is LOW, writes the control register will be ignored
(no acknowledge will be issued after the data byte).
The WEL bit is set by writing a “1” to the WEL bit and
zeroes to the other bits of the control register. Once
set, WEL remains set until either it is reset to 0 (by
writing a “0” to the WEL bit and zeroes to the other bits
of the control register) or until the part powers up
again. Writes to the WEL bit do not cause a nonvolatile
write cycle, so the device is ready for the next operation immediately after the stop condition.
WD1, WD0: Watchdog Timer Bits
The bits WD1 and WD0 control the period of the
watchdog timer. The options are shown below.
WD1
WD0
Watchdog Time Out Period
– Write a value to the control register that has all the
control bits set to the desired state. This can be represented as 0xy0 0010 in binary, where xy are the
WD bits. (Operation preceeded by a start and ended
with a stop.) Since this is a nonvolatile write cycle it
will take up to 10ms to complete. The RWEL bit is
reset by this cycle and the sequence must be
repeated to change the nonvolatile bits again. If bit 2
is set to ‘1’ in this third step (0xy0 0110) then the
RWEL bit is set, but the WD1 and WD0 bits remain
unchanged. Writing a second byte to the control register is not allowed. Doing so aborts the write operation and returns a NACK.
– A read operation occurring between any of the previous operations will not interrupt the register write
operation.
– The RWEL bit cannot be reset without writing to the
nonvolatile control bits in the control register, power
cycling the device or attempting a write to a write
protected block.
To illustrate, a sequence of writes to the device consisting of [02H, 06H, 02H] will reset all of the nonvolatile bits in the control register to 0. A sequence of [02H,
06H, 06H] will leave the nonvolatile bits unchanged
and the RWEL bit remains set.
0
0
1.4 seconds
0
1
600 milliseconds
1
0
200 milliseconds
SERIAL INTERFACE
1
1
Disabled (factory setting)
Serial Interface Conventions
Writing to the Control Register
Changing any of the nonvolatile bits of the control register requires the following steps:
– Write a 02H to the control register to set the write
enable latch (WEL). This is a volatile operation, so
there is no delay after the write. (Operation preceeded by a start and ended with a stop.)
– Write a 06H to the control register to set both the
register write enable latch (RWEL) and the WEL bit.
This is also a volatile cycle. The zeros in the data
byte are required. (Operation preceeded by a start
and ended with a stop.)
6
The device supports a bidirectional bus oriented protocol. The protocol defines any device that sends data
onto the bus as a transmitter, and the receiving device
as the receiver. The device controlling the transfer is
called the master and the device being controlled is
called the slave. The master always initiates data
transfers, and provides the clock for both transmit and
receive operations. Therefore, the devices in this family operate as slaves in all applications.
Serial Clock and Data
Data states on the SDA line can change only during
SCL LOW. SDA state changes during SCL HIGH are
reserved for indicating start and stop conditions. See
Figure 5.
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Figure 5. Valid Data Changes on the SDA Bus
SCL
SDA
Data Stable
Data Change
Data Stable
Serial Start Condition
Serial Stop 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 SDA
and SCL lines for the start condition and will not
respond to any command until this condition has been
met. See Figure 6.
All communications must be terminated by a stop condition, which is a LOW to HIGH transition of SDA when
SCL is HIGH. The stop condition is also used to place
the device into the Standby power mode after a read
sequence. A stop condition can only be issued after the
transmitting device has released the bus. See Figure 6.
Figure 6. Valid Start and Stop Conditions
SCL
SDA
Start
Serial Acknowledge
Acknowledge is a software convention used to indicate successful data transfer. The transmitting device,
either master or slave, will release the bus after transmitting eight bits. During the ninth clock cycle, the
receiver will pull the SDA line LOW to acknowledge
that it received the eight bits of data. Refer to Figure 7.
7
Stop
The device will respond with an acknowledge after
recognition of a start condition and the correct contents of the slave address byte. Acknowledge bits are
also provided by the X4003/4005 after correct reception of the control register address byte, after receiving
the byte written to the control register and after the
second slave address in a read question (See Figure 8
and See Figure 9.)
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Figure 7. Acknowledge Response From Receiver
SCL from
Master
1
8
9
Data Output
from
Data Output
from Receiver
Start
Acknowledge
byte, the device responds with an acknowledge, and
awaits the data. After receiving the 8 bits of the data byte,
the device again responds with an acknowledge. The
master then terminates the transfer by generating a stop
condition, at which time the device begins the internal
write cycle to the nonvolatile memory. During this internal
write cycle, the device inputs are disabled, so the device
will not respond to any requests from the master. If WP is
HIGH, the control register cannot be changed. A write to
the control register will suppress the acknowledge bit and
no data in the control register will change. With WP low,
a second byte written to the control register terminates
the operation and no write occurs.
SERIAL WRITE OPERATIONS
Slave Address Byte
Following a start condition, the master must output a
slave address byte. This byte consists of several parts:
– a device type identifier that is always ‘1011’.
– two bits of ‘0’.
– one bit of the slave command byte is a R/W bit. The
R/W bit of the slave address byte defines the operation to be performed. When the R/W bit is a one,
then a read operation is selected. A zero selects a
write operation. Refer to Figure 8.
– After loading the entire slave address byte from the
SDA bus, the device compares the input slave byte
data to the proper slave byte. Upon a correct compare, the device outputs an acknowledge on the
SDA line.
Stops and Write Modes
Stop conditions that terminate write operations must
be sent by the master after sending 1 full data byte
plus the subsequent ACK signal. If a stop is issued in
the middle of a data byte, or before 1 full data byte
plus its associated ACK is sent, then the device will
reset itself without performing the write.
Write Control Register
To write to the control register, the device requires the
slave address byte and a byte address. This gives the
master access to register. After receipt of the address
SDA Bus
Signals from
the Slave
8
Slave
Address
Byte
Address
1 0 1 1 0 0 10
1 1 1 1 11 1 1
A
C
K
Data
A
C
K
Stop
Signals from
the Master
Start
Figure 8. Write Control Register Sequence
A
C
K
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X4003, X4005
Serial Read Operations
The read operation allows the master to access the control
register. To conform to the I2C standard, 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 master issues the start condition and the
slave address byte, receives an acknowledge, then
issues the byte address. After acknowledging receipt
of the byte address, the master immediately issues
another start condition and the slave address byte with
the R/W bit set to one. This is followed by an acknowledge from the device and then by the eight bit control
register. The master terminates the read operation by
not responding with an acknowledge and then issuing
a stop condition. Refer to Figure 9 for the address,
acknowledge, and data transfer sequences.
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 it is not possible to write to the device.
– SDA pin is the input mode.
RESET/RESET signal is active for tPURST.
Figure 9. Control Register Read Sequence
S
t
a
r
t
Signals from
the Master
SDA Bus
Slave
Address
Byte
Address
1 0 11 0 0 10
1 1 1 1 11 1 1
A
C
K
Signals from
the Slave
Data Protection
S
t
a
r
t
S
t
o
p
Slave
Address
10 1 10 01 1
A
C
K
A
C
K
Data
Symbol Table
The following circuitry has been included to prevent
inadvertent writes:
– The WEL bit must be set to allow a write operation.
– The proper clock count and bit sequence is required
prior to the stop bit in order to start a nonvolatile
write cycle.
– A three step sequence is required before writing into
the control register to change watchdog timer or
block lock settings.
– The WP pin, when held HIGH, prevents all writes to
the control register.
– Communication to the device is inhibited below the
VTRIP voltage.
WAVEFORM
INPUTS
OUTPUTS
Must be
steady
Will be
steady
May change
from LOW
to HIGH
Will change
from LOW
to HIGH
May change
from HIGH
to LOW
Will change
from HIGH
to LOW
Don’t Care:
Changes
Allowed
Changing:
State Not
Known
N/A
Center Line
is High
Impedance
– Command to change the control register are terminated if in-progress when RESET/RESET go active.
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ABSOLUTE MAXIMUM RATINGS
COMMENT
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 ............................................... 5mA
Lead temperature (soldering, 10 seconds) ........ 300°C
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only; the functional operation of the
device (at these or any other conditions above those
listed in the operational sections of this specification) is
not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
Temperature
Commercial
Industrial
Min.
0°C
-40°C
Max.
70°C
+85°C
Option
-1.8
-2.7 and -2.7A
Blank and -4.5A
Supply Voltage Limits
1.8V to 3.6V
2.7V to 5.5V
4.5V to 5.5V
D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.)
VCC = 1.8 to 3.6V
Symbol
Parameter
Min
Max
VCC = 2.7 to 5.5V
Min
Max
Unit
Test Conditions
fSCL = 400kHz nonvolatile,
SDA = Open
ICC(1)
Active supply current
read control register
0.5
1.0
mA
ICC2(1)
Active supply current
write control register
1.5
3.0
mA
ICC3(2)
Operating current AC
(WDT off)
1
1
µA
ICC4(2)
Operating current DC
(WDT off)
1
1
µA
ICC5(2)
Operating current DC
(WDT on)
10
20
µA
ILI
Input leakage current
10
10
µA
VIN = GND to VCC
ILO
Output leakage current
10
10
µA
VSDA = GND to VCC
Device is in Standby(2)
VCC x 0.3
V
VCC + 0.5
V
VIL(3)
Input LOW voltage
VIH(3)
Input HIGH voltage
VHYS
Schmitt trigger input
hysteresis fixed input level
VCC related level
VOL
Output LOW voltage
-0.5
VCC x 0.3
-0.5
VCC x 0.7 VCC + 0.5 VCC x 0.7
VSDA = VSCL = VCC
Others = GND or VSB
V
0.2
.05 x VCC
0.2
.05 x VCC
0.4
0.4
V
IOL = 3.0mA (2.7-5.5V)
IOL = 1.8mA (1.8-3.6V)
Notes: (1) The device enters the active state after any start, and remains active until: 9 clock cycles later if the device select bits in the slave
address byte are incorrect; 200ns after a stop ending a read operation; or tWC after a stop ending a write operation.
(2) The device goes into standby: 200ns after any stop, except those that initiate a nonvolatile write cycle; tWC after a stop that initiates a
nonvolatile cycle; or 9 clock cycles after any start that is not followed by the correct device select bits in the slave address byte.
(3) VIL min. and VIH max. are for reference only and are not tested.
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CAPACITANCE (TA = 25°C, f = 1.0 MHz, VCC = 5V)
Symbol
COUT
CIN
Note:
(4)
(4)
Parameter
Max.
Unit
Test Conditions
Output capacitance (SDA, RESET/RESET)
8
pF
VOUT = 0V
Input capacitance (SCL, WP)
6
pF
VIN = 0V
(4) This parameter is periodically sampled and not 100% tested.
EQUIVALENT A.C. LOAD CIRCUIT
A.C. TEST CONDITIONS
5V
5V
1533Ω
For VOL = 0.4V
and IOL = 3 mA
SDA
4.6kΩ
Input pulse levels
0.1VCC to 0.9VCC
Input rise and fall times
10ns
Input and output timing levels
0.5VCC
Output load
Standard output load
RESET
RESET
100pF
100pF
A.C. CHARACTERISTICS (Continued)(Over recommended operating conditions, unless otherwise specified)
100kHz
Symbol
fSCL
Parameter
SCL clock frequency
400kHz
Min.
Max.
Min.
Max.
Unit
0
100
0
400
kHz
tIN
Pulse width suppression time at inputs
n/a
n/a
50
tAA
SCL LOW to SDA data out valid
0.1
0.9
0.1
tBUF
Time the bus free before start of new transmission
4.7
1.3
µs
tLOW
Clock LOW time
4.7
1.3
µs
tHIGH
Clock HIGH time
4.0
0.6
µs
ns
0.9
µs
tSU:STA
Start condition setup time
4.7
0.6
µs
tHD:STA
Start condition hold time
4.0
0.6
µs
tSU:DAT
Data in setup time
250
100
ns
tHD:DAT
Data in hold time
5.0
0
µs
tSU:STO
Stop condition setup time
0.6
0.6
µs
Data output hold time
50
50
ns
tDH
tR
tF
SDA and SCL rise time
1000
SDA and SCL fall time
300
20
+.1Cb(6)
300
ns
20
+.1Cb(6)
300
ns
tSU:WP
WP setup time
0.4
0.6
µs
tHD:WP
WP hold time
0
0
µs
Cb
Capacitive load for each bus line
400
400
pF
Notes: (5) Typical values are for TA = 25°C and VCC = 5.0V
(6) Cb = total capacitance of one bus line in pF.
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TIMING DIAGRAMS
Bus Timing
tHIGH
tF
SCL
tLOW
tR
tSU:DAT
tSU:STA
SDA IN
tSU:STO
tHD:DAT
tHD:STA
tA
tBUF
tDH
SDA OUT
WP Pin Timing
Start
SCL
Clk 1
Clk 9
Slave Address Byte
SDA IN
tSU:WP
tHD:WP
WP
Write Cycle Timing
SCL
SDA
8th Bit of Last Byte
ACK
tWC
Stop
Condition
Start
Condition
Nonvolatile Write Cycle Timing
Symbol
tWC(7)
Note:
Parameter
Write cycle time
Min.
Typ.(1)
Max.
Unit
5
10
ms
(7) tWC is the time from a valid stop condition at the end of a write sequence to the end of the self-timed internal nonvolatile write cycle. It is
the minimum cycle time to be allowed for any nonvolatile write by the user, unless Acknowledge Polling is used.
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Power-Up and Power-Down Timing
VTRIP
VCC
tPURST
0 Volts
tPURST
tR
tF
tRPD
RESET
VRVALID
RESET
VRVALID
RESET/RESET Output Timing
Symbol
Parameter
Min.
Typ.
Max.
Unit
VTRIP
Reset trip point voltage, X4003-4.5A, X4005-4.5A
Reset trip point voltage, X4003, X4005
Reset trip point voltage, X4003-2.7A, X4005-2.7A
Reset trip point voltage, X4003-2.7, X4005-2.7
Reset trip point voltage, X4003-1.8, X4005-1.8
4.5
4.25
2.85
2.55
1.7
4.62
4.38
2.92
2.62
1.75
4.75
4.5
3.0
2.7
1.8
V
V
V
tPURST
Power-up reset time out
100
200
400
ms
tRPD(8)
VCC detect to reset/output
500
ns
tF(8)
tR
(8)
VRVALID
Note:
VCC fall time
10
ms
VCC rise time
0.1
ns
1
V
Reset valid VCC
(8) This parameter is periodically sampled and not 100% tested.
SDA vs. RESET/RESET Timing
SCL
SDA
tCST
RESET
tWDO
tRST
tWDO
tRST
RESET
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FN8113.0
March 15, 2005
X4003, X4005
RESET/RESET Output Timing
Symbol
Min.
Typ.
Max.
Unit
Watchdog time out period,
WD1 = 1, WD0 = 1 (factory setting)
WD1 = 1, WD0 = 0
WD1 = 0, WD0 = 1
WD1 = 0, WD0 = 0
100
450
1
OFF
200
600
1.4
300
800
2
ms
ms
sec
tCST
CS pulse width to reset the watchdog
400
tRST
Reset time out
100
tWDO
Parameter
ns
200
400
ms
VTRIP Programming Timing Diagram
VCC
(VTRIP)
VTRIP
tTHD
tTSU
VP
WP
tVPO
tVPH
tVPS
SCL
tRP
SDA
01h or 03h
00h
A0h
VTRIP Programming Parameters
Parameter
Description
Min. Max.
Unit
tVPS
VTRIP program enable voltage setup time
1
µs
tVPH
VTRIP program enable voltage hold time
1
µs
tTSU
VTRIP setup time
1
µs
tTHD
VTRIP hold (stable) time
10
tWC
VTRIP write cycle time
tVPO
VTRIP program enable voltage off time (between successive adjustments)
0
µs
tRP
VTRIP program recovery period (between successive adjustments)
10
ms
VP
Programming voltage
15
18
V
VTRIP programmed voltage range
1.7
5.0
V
Vta1
Initial VTRIP program voltage accuracy (VCC applied - VTRIP) (Programmed at 25°C.)
-0.1
+0.4
V
Vta2
Subsequent VTRIP program voltage accuracy [(VCC applied - Vta1) - VTRIP.
Programmed at 25°C.)
-25
+25
mV
Vtr
VTRIP program voltage repeatability (Successive program operations. Programmed
at 25°C.)
-25
+25
mV
Vtv
VTRIP program variation after programming (0-75°C). (programmed at 25°C)
-25
+25
mV
VTRAN
ms
10
ms
VTRIP programming parameters are periodically sampled and are not 100% tested.
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FN8113.0
March 15, 2005
X4003, X4005
PACKAGING INFORMATION
8-Lead Plastic Small Outline Gull Wing 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)
0.019 (0.49)
0.188 (4.78)
0.197 (5.00)
(4X) 7°
0.053 (1.35)
0.069 (1.75)
0.004 (0.19)
0.010 (0.25)
0.050 (1.27)
0.010 (0.25)
X 45°
0.020 (0.50)
0.050" Typical
0.050"
Typical
0° - 8°
0.0075 (0.19)
0.010 (0.25)
0.250"
0.016 (0.410)
0.037 (0.937)
FOOTPRINT
0.030"
Typical
8 Places
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
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FN8113.0
March 15, 2005
X4003, X4005
PACKAGING INFORMATION
8-Lead Miniature Small Outline Gull Wing Package Type M
0.118 ± 0.002
(3.00 ± 0.05)
0.012 + 0.006 / -0.002
(0.30 + 0.15 / -0.05)
0.0256 (0.65) Typ.
R 0.014 (0.36)
0.118 ± 0.002
(3.00 ± 0.05)
0.030 (0.76)
0.0216 (0.55)
0.036 (0.91)
0.032 (0.81)
0.040 ± 0.002
(1.02 ± 0.05)
7° Typ.
0.008 (0.20)
0.004 (0.10)
0.0256" Typical
0.150 (3.81)
Ref.
0.193 (4.90)
Ref.
0.007 (0.18)
0.005 (0.13)
0.025"
Typical
0.220"
FOOTPRINT
0.020"
Typical
8 Places
NOTE:
1. ALL DIMENSIONS IN INCHES AND (MILLIMETERS)
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FN8113.0
March 15, 2005
X4003, X4005
Ordering Information
VCC
Range
VTRIP
Range
Package
Operating
Temperature Range
Part Number RESET
(Active LOW)
Part Number RESET
(Active HIGH)
4.5-5.5V
4.5-4.75
8L SOIC
0-70°C
X4003S8-4.5A
X4005S8-4.5A
-40-85°C
X4003S8I-4.5A
X4005S8I-4.5A
8L MSOP
-40-85°C
X4003M8I-4.5A
X4005M8I-4.5A
8L SOIC
0-70°C
X4003S8
X4005S8
-40-85°C
X4003S8I
X4005S8I
-40-85°C
X4003M8I
X4005M8I
4.5-5.5V
4.25-4.5
8L MSOP
2.7-5.5V
2.7-5.5V
1.8-3.6V
2.85-3.0
8L SOIC
2.55-2.7
1.7-1.8
0-70°C
X4003S8-2.7A
X4005S8-2.7A
-40-85°C
X4003S8I-2.7A
X4005S8I-2.7A
8L MSOP
-40-85°C
X4003M8I-2.7A
X4005M8I-2.7A
8L SOIC
0-70°C
X4003S8-2.7
X4005S8-2.7
-40-85°C
X4003S8I-2.7
X4005S8I-2.7
8L MSOP
-40-85°C
X4003M8I-2.7
X4005M8I-2.7
8L SOIC
0-70°C
X4003S8-1.8
X4005S8-1.8
8L MSOP
0-70°C
X4003M8-1.8
X4005M8-1.8
Part Mark Information
8-Lead TSSOP
8-Lead SOIC
EYWW
XXXXX
X4003/05 X
XX
ACI/ACR = -4.5A (0 to70°C)
ACK/ACT = No Suffix (0 to 70°C)
ACM/ACV = -2.7A (0 to 70°C)
ACO/ACX = -2.7 (0 to 70°C)
ACP/ACY = -1.8 (0 to 70°C)
4003/4005
Blank = 8-Lead SOIC
AL = -4.5A (0 to +70°C)
AM = -4.5A (-171740 to +85°C)
Blank = No Suffix (0 to +70°C)
I = No Suffix (-40 to +85°C)
AN = -2.7A (0 to +70°C)
AP = -2.7A (-40 to +85°C)
F = -2.7 (0 to +70°C)
G = -2.7 (-40 to +85°C)
AG = -1.8 (0 to +70°C)
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Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. 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. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
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March 15, 2005