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m/tsc May 30, 2006
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tersil.c
ourSheet
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T
1-888-IN
CPU Supervisor
X5001
FN8125.1
DESCRIPTION
FEATURES
• 200ms power-on reset delay
• Low VCC detection and reset assertion
—Five standard reset threshold voltages
—Adjust low VCC reset threshold voltage using
special programming sequence
—Reset signal valid to VCC = 1V
• Selectable nonvolatile watchdog timer
—0.2, 0.6, 1.4 seconds
—Off selection
—Select settings through software
• Long battery life with low power consumption
—<50µA max standby current, watchdog on
—<1µA max standby current, watchdog off
• 2.7V to 5.5V operation
• SPI mode 0 interface
• Built-in inadvertent write protection
—Power-up/power-down protection circuitry
—Watchdog change latch
• High reliability
• Available packages
—8 Ld TSSOP
—8 Ld SOIC
—8 Ld PDIP
• Pb-free plus anneal available (RoHS compliant)
This device combines three popular functions, Poweron Reset, Watchdog Timer, and Supply Voltage Supervision in one package. This combination lowers system
cost, reduces board space requirements, and increases
reliability.
The watchdog timer provides an independent protection mechanism for microcontrollers. During a system
failure, the device will respond with a RESET signal
after a selectable time out interval. The user selects the
interval from three preset values. Once selected, the
interval does not change, even after cycling the power.
The user’s system is protected from low voltage conditions by the device’s low VCC detection circuitry. When
VCC falls below the minimum VCC trip point, the system
is reset. RESET is asserted until VCC returns to proper
operating levels 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.
The device utilizes Intersil’s proprietary Direct Write™
cell for the watchdog timer control bits and the VTRIP
storage element, providing a minimum endurance of
100,000 write cycles and a minimum data retention of
100 years.
BLOCK DIAGRAM
Watchdog
Transition
Detector
SI
SO
RESET
Data
Register
Reset &
Watchdog
Timebase
Command
SCK
Watchdog
Timer
Decode &
Control
CS/WDI
Logic
Power-on/
VCC
+
VTRIP
1
Low Voltage
REset
Generation
-
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005-2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
X5001
Ordering Information
PART NUMBER
X5001P-2.7
PART MARKING
X5001P F
VCC RANGE (V)
VTRIP RANGE
TEMP. RANGE
(°C)
2.7 to 5.5
2.55 to 2.7
0 to 70
8 Ld PDIP
MDP0031
0 to 70
8 Ld PDIP (300 mil)
(Pb-free)
MDP0031
-40 to 85
8 Ld PDIP
MDP0031
-40 to 85
8 Ld PDIP (300 mil)
(Pb-free)
MDP0031
X5001PZ-2.7 (Note) X5001P ZF
X5001PI-2.7
X5001P G
X5001PIZ-2.7 (Note) X5001P ZG
PACKAGE
PKG. DWG. #
X5001S8-2.7
X5001 F
0 to 70
8 Ld SOIC (150 mil)
MDP0027
X5001S8Z-2.7
(Note)
X5001 ZF
0 to 70
8 Ld SOIC (150 mil)
(Pb-free)
MDP0027
X5001S8I-2.7
X5001 G
-40 to 85
8 Ld SOIC (150 mil)
MDP0027
X5001S8IZ-2.7
(Note)
X5001 ZG
-40 to 85
8 Ld SOIC (150 mil)
(Pb-free)
MDP0027
X5001V8-2.7
501 F
0 to 70
8 Ld TSSOP (4.4mm)
M8.173
X5001V8Z-2.7
(Note)
5001 FZ
0 to 70
8 Ld TSSOP (4.4mm)
(Pb-free)
M8.173
X5001V8I-2.7
501 G
-40 to 85
8 Ld TSSOP (4.4mm)
M8.173
X5001V8IZ-2.7
(Note)
5001 GZ
-40 to 85
8 Ld TSSOP (4.4mm)
(Pb-free)
M8.173
X5001P-2.7A
X5001P AN
0 to 70
8 Ld PDIP
MDP0031
X5001PZ-2.7A
(Note)
X5001P ZAN
0 to 70
8 Ld PDIP (300 mil)
(Pb-free)
MDP0031
X5001PI-2.7A
X5001P AP
-40 to 85
8 Ld PDIP
MDP0031
X5001PIZ-2.7A
(Note)
X5001P ZAP
-40 to 85
8 Ld PDIP (300 mil)
(Pb-free)
MDP0031
X5001S8-2.7A
X5001 AN
0 to 70
8 Ld SOIC (150 mil)
MDP0027
X5001S8Z-2.7A
(Note)
X5001 ZAN
0 to 70
8 Ld SOIC (150 mil)
(Pb-free)
MDP0027
X5001S8I-2.7A
X5001 AP
-40 to 85
8 Ld SOIC (150 mil)
MDP0027
X5001S8IZ-2.7A
(Note)
X5001 ZAP
-40 to 85
8 Ld SOIC (150 mil)
(Pb-free)
MDP0027
X5001V8-2.7A
501 AN
0 to 70
8 Ld TSSOP (4.4mm)
M8.173
X5001V8Z-2.7A
(Note)
5001 ANZ
0 to 70
8 Ld TSSOP (4.4mm)
(Pb-free)
M8.173
X5001V8I-2.7A
501 AP
-40 to 85
8 Ld TSSOP (4.4mm)
M8.173
X5001V8IZ-2.7A
(Note)
5001 APZ
-40 to 85
8 Ld TSSOP (4.4mm)
(Pb-free)
M8.173
X5001PI
X5001P I
-40 to 85
8 Ld PDIP
MDP0031
X5001PIZ (Note)
X5001P ZI
-40 to 85
8 Ld PDIP (300 mil)
(Pb-free)
MDP0031
X5001S8
X5001
0 to 70
8 Ld SOIC (150 mil)
MDP0027
X5001S8Z (Note)
X5001 Z
0 to 70
8 Ld SOIC (150 mil)
(Pb-free)
MDP0027
X5001S8I
X5001 I
-40 to 85
8 Ld SOIC (150 mil)
MDP0027
X5001S8IZ (Note)
X5001 ZI
-40 to 85
8 Ld SOIC (150 mil)
(Pb-free)
MDP0027
2.85 to 3.0
4.5 to 5.5
2
4.25 to 4.5
FN8125.1
May 30, 2006
X5001
Ordering Information (Continued)
PART NUMBER
PART MARKING
VCC RANGE (V)
VTRIP RANGE
TEMP. RANGE
(°C)
4.5 to 5.5
4.25 to 4.5
0 to 70
8 Ld TSSOP (4.4mm)
M8.173
0 to 70
8 Ld TSSOP (4.4mm)
(Pb-free)
M8.173
PACKAGE
PKG. DWG. #
X5001V8
501
X5001V8Z (Note)
5001 Z
X5001V8I
501 I
-40 to 85
8 Ld TSSOP (4.4mm)
M8.173
X5001V8IZ (Note)
5001 IZ
-40 to 85
8 Ld TSSOP (4.4mm)
(Pb-free)
M8.173
X5001PI-4.5A
X5001P AM
-40 to 85
8 Ld PDIP
MDP0031
X5001PIZ-4.5A
(Note)
X5001P ZAM
-40 to 85
8 Ld PDIP (300 mil)
(Pb-free)
MDP0031
X5001S8-4.5A
X5001 AL
0 to 70
8 Ld SOIC (150 mil)
MDP0027
X5001S8Z-4.5A
(Note)
X5001 ZAL
0 to 70
8 Ld SOIC (150 mil)
(Pb-free)
MDP0027
X5001S8I-4.5A
X5001 AM
-40 to 85
8 Ld SOIC (150 mil)
MDP0027
X5001S8IZ-4.5A
(Note)
X5001 ZAM
-40 to 85
8 Ld SOIC (150 mil)
(Pb-free)
MDP0027
X5001V8-4.5A
501 AL
0 to 70
8 Ld TSSOP (4.4mm)
M8.173
X5001V8Z-4.5A
(Note)
5001 ALZ
0 to 70
8 Ld TSSOP (4.4mm)
(Pb-free)
M8.173
X5001V8I-4.5A
501 AM
-40 to 85
8 Ld TSSOP (4.4mm)
M8.173
X5001V8IZ-4.5A
(Note)
5001 AMZ
-40 to 85
8 Ld TSSOP (4.4mm)
(Pb-free)
M8.173
4.5 to 5.5
4.5 to 4.75
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3
FN8125.1
May 30, 2006
X5001
PIN CONFIGURATION
8 Ld TSSOP
8 Ld SOIC/PDIP
RESET
1
8
SCK
VCC
2
7
SI
CS/WDI
3
6
SO
4
5
X5001
CS/WDI
1
8
VCC
SO
2
7
RESET
VSS
VPE
3
6
SCK
VPE
VSS
4
5
SI
X5001
PIN DESCRIPTION
Pin
(SOIC/PDIP)
Pin
TSSOP
Name
Function
1
1
CS/WDI
Chip Select Input. CS HIGH, deselects the device and the SO output pin is at
a high impedance state. Unless a nonvolatile write cycle is underway, the device
will be in the standby power mode. CS LOW enables the device, placing it in the
active power mode. Prior to the start of any operation after power-up, a HIGH to
LOW transition on CS is required.
Watchdog Input. A HIGH to LOW transition on the WDI pin restarts the Watchdog timer. The absence of a HIGH to LOW transition within the watchdog time
out period results in RESET/RESET going active.
2
2
SO
Serial Output. SO is a push/pull serial data output pin. A read cycle shifts data
out on this pin. The falling edge of the serial clock (SCK) clocks the data out.
5
8
SI
Serial Input. SI is a serial data input pin. Input all opcodes, byte addresses, and
memory data on this pin. The rising edge of the serial clock (SCK) latches the
input data. Send all opcodes (Table 1), addresses and data MSB first.
6
9
SCK
Serial Clock. The Serial Clock controls the serial bus timing for data input and
output. The rising edge of SCK latches in the opcode, address, or watchdog bits
present on the SI pin. The falling edge of SCK changes the data output on the
SO pin.
3
6
VPE
VTRIP Program Enable. When VPE is LOW, the VTRIP point is fixed at the last
valid programmed level. To readjust the VTRIP level, requires that the VPE pin be
pulled to a high voltage (15-18V).
4
7
VSS
Ground
8
14
VCC
Supply Voltage
7
13
RESET
3-5,10-12
NC
4
Reset Output. RESET is an active LOW, 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 200ms. RESET goes active
if the watchdog timer is enabled and CS/WDI remains either HIGH or LOW longer than the selectable watchdog time out period. A falling edge of CS/WDI will
reset the watchdog timer. RESET goes active on power-up at 1V and remains
active for 200ms after the power supply stabilizes.
No internal connections
FN8125.1
May 30, 2006
X5001
PRINCIPLES OF OPERATION
Power-on Reset
Application of power to the X5001 activates a poweron 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. When VCC exceeds the device VTRIP value
for 200ms (nominal) the circuit releases RESET, allowing the processor to begin executing code.
Low Voltage Monitoring
During operation, the X5001 monitors the VCC level
and asserts RESET if supply voltage falls below a preset minimum VTRIP. The RESET signal prevents the
microprocessor from operating in a power fail or
brownout condition. The RESET signal remains active
until the voltage drops below 1V. It also remains active
until VCC returns and exceeds VTRIP for 200ms.
Watchdog Timer
The watchdog timer circuit monitors the microprocessor
activity by monitoring the WDI input. The microprocessor must toggle the CS/WDI pin periodically to prevent
a RESET signal. The CS/WDI pin must be toggled
from HIGH to LOW prior to the expiration of the watchdog time out period. The state of two nonvolatile control
bits in the watchdog register determine the watchdog
timer period.
Vcc Threshold Reset Procedure
The X5001 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
X5001 threshold may be adjusted. The procedure is
described in the following sections, and requires the
application of a high voltage control signal.
5
Setting the VTRIP Voltage
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.
To set the new VTRIP voltage, apply the desired VTRIP
threshold voltage to the VCC pin and tie the WPE pin to
the programming voltage VP. Then a VTRIP programming
command sequence is sent to the device over the SPI
interface. This VTRIP programming sequence consists of
pulling CS LOW, then clocking in data 03h, 00h and 01h.
This is followed by bringing CS HIGH then LOW and
clocking in data 02h, 00h, and 01h (in order) and bringing
CS HIGH. This initiates the VTRIP programming
sequence. VP is brought LOW to end 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
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 reset the VTRIP voltage, apply greater than 3V to
the VCC pin and tie the WPE pin to the programming
voltage VP. Then a VTRIP command sequence is sent
to the device over the SPI interface. This VTRIP programming sequence consists of pulling CS LOW, then
clocking in data 03h, 00h and 01h. This is followed by
bringing CS HIGH then LOW and clocking in data 02h,
00h, and 03h (in order) and bringing CS HIGH. This
initiates the VTRIP programming sequence. VP is
brought LOW to end the operation.
FN8125.1
May 30, 2006
X5001
Figure 1. Sample VTRIP Reset Circuit
4.7K
VP
Adjust
VTRIP
Adj.
Run
1
8
2
3
7
X5001 6
4
5
RESET
µC
SCK
SI
SO
CS
Figure 2. Set VTRIP Level Sequence (VCC = desired VTRIP value)
VPE = 15-18V
VPE
CS
0
1
2 3
4
5 6
7 8
9 10
20 21 22 23
0
1
2 3
4
5 6
7 8
9 10
20 21 22 23
SCK
16 Bits
16 Bits
SI
03h
0001h
02h
0001h
Figure 3. Reset VTRIP Level Sequence (VCC > 3V)
VPE = 15-18V
VPE
CS
0
1
2 3
4
5 6
7 8
9 10
20 21 22 23
0
1
2 3
4
5 6
7 8
9 10
20 21 22 23
SCK
16 BITS
Bits
16 Bits
SI
03h
0001h
6
02h
0003h
FN8125.1
May 30, 2006
X5001
Figure 4. VTRIP Programming Sequence
VTRIP Programming
Execute
Reset VTRIP
Sequence
Set VCC = VCC Applied =
Desired VTRIP
New VCC Applied =
Old VCC Applied + Error
Execute
Set VTRIP
Sequence
New VCC Applied =
Old VCC Applied - Error
Apply 5V to VCC
Execute
Reset VTRIP
Sequence
Decrement VCC
(VCC = VCC - 50mV)
NO
RESET pin
goes active?
YES
Error < 0
Measured VTRIP Desired VTRIP
Error > 0
Error = 0
DONE
SPI INTERFACE
The device is designed to interface directly with the
synchronous Serial Peripheral Interface (SPI) of many
popular microcontroller families.
The device monitors the CS/WDI line and asserts
RESET output if there is no activity within user selectable timeout period. The device also monitors the VCC
supply and asserts the RESET if VCC falls below a
preset minimum (VTRIP). The device contains an 8-bit
watchdog timer register to control the watchdog time
out period. The current settings are accessed via the
SI and SO pins.
7
All instructions (Table 1) and data are transferred MSB
first. Data input on the SI line is latched on the first rising edge of SCK after CS goes LOW. Data is output on
the SO line by the falling edge of SCK. SCK is static,
allowing the user to stop the clock and then start it
again to resume operations where left off.
FN8125.1
May 30, 2006
X5001
Read Watchdog Timer Register Operation
Watchdog Timer Register
7
6
5
4
3
2
1
0
0
0
0
WD1
WD0
0
0
0
If there is not a nonvolatile write in progress, the read
watchdog timer instruction returns the setting of the
watchdog timer control bits. The other bits are
reserved and will return’0’ when read. See Figure 3.
Watchdog Timer Control Bits
The watchdog timer control bits, WD0 and WD1,
select the watchdog time out period. These nonvolatile bits are programmed with the set watchdog timer
(SWDT) instruction.
Watchdog Control Bits
WD1
WD0
Watchdog Time Out
(Typical)
0
0
1.4 seconds
0
1
600 milliseconds
1
0
200 milliseconds
1
1
disabled
If a nonvolatile write is in progress, the read watchdog
timer register Instruction returns a HIGH on SO. When
the nonvolatile write cycle is completed, a separate read
watchdog timer instruction should be used to determine
the current status of the watchdog control bits.
RESET Operation
The RESET (X5001) output is designed to go LOW
whenever VCC has dropped below the minimum trip
point and/or the watchdog timer has reached its programmable time out limit.
The RESET output is an open drain output and
requires a pull-up resistor.
Write Watchdog Register Operation
Changing the watchdog timer register is a two step
process. First, the change must be enabled by setting
the watchdog change latch (see below). This instruction is followed by the set watchdog timer (SWDT)
instruction, which includes the data to be written (Figure 5). Data bits 3 and 4 contain the watchdog settings
and data bits 0, 1, 2, 5, 6 and 7 must be “0”.
Watchdog Change Latch
The watchdog change latch must be SET before a
Write watchdog timer operation is initiated. The
Enable Watchdog Change (EWDC) instruction will set
the latch and the Disable Watchdog Change (DWDC)
instruction will reset the latch (Figure 6). This latch is
automatically reset upon a power-up condition and
after the completion of a valid nonvolatile write cycle.
Operational Notes
The device powers-up in the following state:
– The device is in the low power standby state.
– A HIGH to LOW transition on CS is required to enter
an active state and receive an instruction.
– SO pin is high impedance.
– The watchdog change latch is reset.
– The RESET signal is active for tPURST.
Data Protection
The following circuitry has been included to prevent
inadvertent writes:
– A EWDC instruction must be issued to enable a
change to the watchdog timeout setting.
– CS must come HIGH at the proper clock count in
order to implement the requested changes to the
watchdog timeout setting.
Table 1. Instruction Set Definition
Instruction Format
Note:
Instruction Name and Operation
0000 0110
EWDC: Enable Watchdog Change Operation
0000 0100
DWDC: Disable Watchdog Change Operation
0000 0001
SWDT: Set Watchdog Timer control bits:
Instruction followed by contents of register: 000(WD1) (WD0)000
See Watchdog Timer Settings and Figure 7.
0000 0101
RWDT: Read Watchdog Timer Control Bits
Instructions are shown with MSB in leftmost position. Instructions are transferred MSB first.
8
FN8125.1
May 30, 2006
X5001
Figure 5. Read Watchdog Timer Setting
CS
0
1
2
3
4
5
6
7
...
SCK
RWDT
Instruction
...
SI
W
D
1
SO
W
D
0
...
Figure 6. Enable Watchdog Change/Disable Watchdog Change Sequence
CS
0
1
2
3
4
5
6
7
SCK
Instruction
(1 Byte)
SI
High Impedance
SO
Figure 7. Write Watchdog Timer Sequence
CS
0
1
2
3
4
5
6
7
8
9
10
11 12 13 14 15
SCK
Data Byte
Instruction
6
SI
SO
High Impedance
9
5
4
3
W W
D D
1 0
FN8125.1
May 30, 2006
X5001
Figure 8. Read Nonvolatile Status (Option 1) (Used to determine end of Watchdog Timer store operation)
CS
0
1
2
3
4
5
6
7
SCK
RWDT
Instruction
SI
Nonvolatile Write in Progress
SO
SO HIGH During 1st Bit While
in the Nonvolatile Write Cycle
Figure 9. Read Nonvolatile Status (Option 2) (Used to determine end of Watchdog Timer store operation)
CS
0
1
2
3
4
5
6
7
SCK
RWDT
Instruction
SI
Nonvolatile Write in Progress
SO
SO HIGH During
Nonvolatile Write Cycle
10
FN8125.1
May 30, 2006
X5001
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, 10s) .................... 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 datasheet) is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect
device reliability.
RECOMMENDED OPERATING CONDITIONS
Temperature
Commercial
Min.
0°C
Max.
Voltage Option
-1.8
-2.7 or -2.7A
-4.5 or -4.5A
+70°C
Note:
Supply Voltage Limits
1.8V to 3.6V
2.7V to 5.5V
4.5V to 5.5V
PT= Package, Temperature
D.C. OPERATING CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified)
Symbol
Parameter
Limits
Typ
Max.
5
Unit
mA
SCK = VCC x 0.1/VCC x 0.9 @ 5MHz,
SO = Open
0.4
mA
SCK = VCC x 0.1/VCC x 0.9 @ 5MHz,
SO = Open
VCC standby current
WDT=OFF
1
µA
CS = VCC, VIN = VSS or VCC, VCC = 5.5V
ISB2
VCC standby current
WDT=ON
50
µA
CS = VCC, VIN = VSS or VCC, VCC = 5.5V
ISB3
VCC standby current
WDT=ON
20
µA
CS = VCC, VIN = VSS or VCC, VCC = 3.6V
ILI
Input leakage current
0.1
10
µA
VIN = VSS to VCC
ILO
Output leakage current
0.1
10
µA
VOUT = VSS to VCC
ICC1
VCC write current
(Active)
ICC2
VCC read current
(Active)
ISB1
Min.
Test Conditions
VIL(1)
VIH(1)
Input LOW voltage
-0.5
VCC x 0.3
V
Input HIGH voltage
VCC x 0.7
VCC + 0.5
V
VOL1
Output LOW voltage
0.4
V
VCC > 3.3V, IOL = 2.1mA
VOL2
Output LOW voltage
0.4
V
2V < VCC < 3.3V, IOL = 1mA
VOL3
Output LOW voltage
0.4
V
VCC  2V, IOL = 0.5mA
VOH1
Output HIGH voltage
VCC-0.8
V
VCC > 3.3V, IOH = -1.0mA
VOH2
Output HIGH voltage
VCC-0.4
V
2V < VCC  3.3V, IOH = -0.4mA
VOH3
Output HIGH voltage
VCC-0.2
V
VCC  2V, IOH = -0.25mA
VOLRS
Reset output LOW
voltage
V
IOL = 1mA
11
0.4
FN8125.1
May 30, 2006
X5001
POWER-UP TIMING
Symbol
tPUR
(2)
(2)
tPUW
Parameter
Min.
Max.
Unit
Power-up to read operation
1
ms
Power-up to write operation
5
ms
Max.
Unit
Conditions
Output capacitance (SO, RESET)
8
pF
VOUT = 0V
Input capacitance (SCK, SI, CS)
6
pF
VIN = 0V
CAPACITANCE (TA = +25°C, f = 1MHz, VCC = 5V)
Symbol
COUT(2)
CIN
(2)
Test
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
3V
A.C. TEST CONDITIONS
5V
3.3k
1.64k
Output
Input pulse levels
VCC x 0.1 to VCC x 0.9
Input rise and fall times
10ns
Input and output timing level
VCC x0.5
RESET
1.64k
100pF
30pF
A.C. CHARACTERISTICS (Over recommended operating conditions, unless otherwise specified)
Data Input Timing
1.8V-3.6V
SymboL
Parameter
2.7V-5.5V
Min.
Max.
0
1
Min.
Max.
Unit
0
2
MHz
fSCK
Clock frequency
tCYC
Cycle time
1000
500
ns
tLEAD
CS lead time
400
200
ns
tLAG
CS lag time
400
200
ns
tWH
Clock HIGH time
400
200
ns
tWL
Clock LOW time
400
200
ns
tSU
Data setup time
100
50
ns
tH
Data hold time
100
50
ns
tRI(3)
tFI(3)
Input rise time
2
2
µs
Input fall time
2
2
µs
tCS
tWC
(4)
CS deselect time
Write cycle time
12
250
150
10
ns
10
ms
FN8125.1
May 30, 2006
X5001
Data Output Timing
1.8V-3.6V
Symbol
Parameter
2.7V-5.5V
Min.
Max.
Min.
Max.
Unit
0
1
0
2
MHz
fSCK
Clock frequency
tDIS
Output disable time
400
200
ns
Output valid from clock low
400
200
ns
tV
tHO
0
0
ns
Output rise time
300
150
ns
(3)
Output fall time
300
150
ns
tRO
tFO
Output hold time
(3)
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.
Figure 10. Data Output Timing
CS
tCYC
tWH
tLAG
SCK
tV
SO
SI
tHO
MSB Out
tWL
tDIS
MSB–1 Out
LSB Out
ADDR
LSB IN
Figure 11. Data Input Timing
tCS
CS
tLEAD
tLAG
SCK
tSU
SI
SO
tH
MSB In
tRI
tFI
LSB In
High Impedance
13
FN8125.1
May 30, 2006
X5001
SYMBOL TABLE
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
Figure 12. Power-Up and Power-Down Timing
VTRIP
VTRIP
VCC
tPURST
0 Volts
tF
tPURST
tRPD
tR
RESET (X5001)
RESET Output Timing
Symbol
Min.
Typ.
Max.
Unit
VTRIP
Reset trip point voltage, X5001PT-4.5A
Reset trip point voltage, X5001PT-4.5
Reset trip point voltage, X5001PT-2.7A
Reset trip point voltage, X5001PT-2.7
Reset trip point voltage, X5001PT-1.8
4.50
4.25
2.85
2.55
1.70
4.63
4.38
2.92
2.63
1.75
4.75
4.50
3.00
2.70
1.80
V
tPURST
Power-up reset timeout
100
200
280
ms
tRPD(5)
VCC detect to reset/output
500
ns
tF(5)
VCC fall time
0.1
ns
tR(5)
VCC rise time
0.1
ns
1
V
VRVALID
Note:
Parameter
Reset valid VCC
(5) This parameter is periodically sampled and not 100% tested.
PT = Package, Temperature
14
FN8125.1
May 30, 2006
X5001
Figure 13. CS vs. RESET Timing
CS
tCST
RESET
tWDO
tRST
tWDO
tRST
RESET Output Timing
Symbol
Parameter
Min.
Typ.
Max.
Unit
200
600
1.4
300
800
2
ms
ms
sec
tWDO
Watchdog timeout period,
WD1 = 1, WD0 = 0
WD1 = 0, WD0 = 1
WD1 = 0, WD0 = 0
100
450
1
tCST
CS pulse width to reset the watchdog
400
tRST
Reset Timeout
100
ns
200
300
ms
VTRIP Programming Timing Diagram
VCC
(VTRIP)
VTRIP
tTSU
tTHD
VP
VPE
tVPS
tVPH
tPCS
CS
tVPO
tRP
SCK
SI
03h
15
0001h
02h
0001h or
0003h
FN8125.1
May 30, 2006
X5001
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
tPCS
VTRIP programming CS inactive time
1
µs
tTSU
VTRIP setup time
1
µs
tTHD
VTRIP hold (stable) time
10
ms
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
10
ms
VTRIP programming parameters are periodically sampled and are not 100% tested.
16
FN8125.1
May 30, 2006
X5001
VCC Supply Current vs. Temperature (ISB)
tWDO vs. Voltage/Temperature (WD1, 0 = 1, 1)
1.85
Isb (µA)
14
1.80
1.75
18
Reset (seconds)
Watchdog Timer On (VCC = 5V)
17
20
15
Watchdog Timer On (VCC = 3V)
11
Watchdog Timer Off (VCC = 3V, 5V)
0.55
0.35
-40C
1.65
1.55
1.7
3.1
Voltage
4.5
tWDO vs. Voltage/Temperature (WD1, 0 = 1, 0)
0.85
VTRIP = 5V
5.000
0.80
Reset (seconds)
4.975
3.525
Voltage
90°C
1.40
5.025
VTRIP = 3.5V
3.500
3.475
2.525
VTRIP = 2.5V
2.500
-40°C
0.75
25°C
0.70
90°C
0.65
0.60
2.475
0
25
Temperature
1.7
85
tPURST vs. Temperature
275
Reset (seconds)
270
265
260
255
250
245
240
25
Degrees °C
17
4.5
3.1
Voltage
tWDO vs. Voltage/Temperature (WD1, 0 0 = 0, 1)
280
Time (ms)
25°C
1.50
90C
VTRIP vs. Temperature (programmed at 25°C)
235
-40
-40°C
1.60
1.45
1.0
25C
Temp (c)
1.70
90
0.30
0.29
0.28
0.27
0.26
0.25
0.24
0.23
0.22
0.21
0.20
-40°C
25°C
90°C
1.7
3.1
4.5
Voltage
FN8125.1
May 30, 2006
X5001
Small Outline Package Family (SO)
A
D
h X 45°
(N/2)+1
N
A
PIN #1
I.D. MARK
E1
E
c
SEE DETAIL “X”
1
(N/2)
B
L1
0.010 M C A B
e
H
C
A2
GAUGE
PLANE
SEATING
PLANE
A1
0.004 C
0.010 M C A B
L
b
0.010
4° ±4°
DETAIL X
MDP0027
SMALL OUTLINE PACKAGE FAMILY (SO)
SYMBOL
SO-8
SO-14
SO16
(0.150”)
SO16 (0.300”)
(SOL-16)
SO20
(SOL-20)
SO24
(SOL-24)
SO28
(SOL-28)
TOLERANCE
NOTES
A
0.068
0.068
0.068
0.104
0.104
0.104
0.104
MAX
-
A1
0.006
0.006
0.006
0.007
0.007
0.007
0.007
0.003
-
A2
0.057
0.057
0.057
0.092
0.092
0.092
0.092
0.002
-
b
0.017
0.017
0.017
0.017
0.017
0.017
0.017
0.003
-
c
0.009
0.009
0.009
0.011
0.011
0.011
0.011
0.001
-
D
0.193
0.341
0.390
0.406
0.504
0.606
0.704
0.004
1, 3
E
0.236
0.236
0.236
0.406
0.406
0.406
0.406
0.008
-
E1
0.154
0.154
0.154
0.295
0.295
0.295
0.295
0.004
2, 3
e
0.050
0.050
0.050
0.050
0.050
0.050
0.050
Basic
-
L
0.025
0.025
0.025
0.030
0.030
0.030
0.030
0.009
-
L1
0.041
0.041
0.041
0.056
0.056
0.056
0.056
Basic
-
h
0.013
0.013
0.013
0.020
0.020
0.020
0.020
Reference
-
16
20
24
28
Reference
N
8
14
16
Rev. L 2/01
NOTES:
1. Plastic or metal protrusions of 0.006” maximum per side are not included.
2. Plastic interlead protrusions of 0.010” maximum per side are not included.
3. Dimensions “D” and “E1” are measured at Datum Plane “H”.
4. Dimensioning and tolerancing per ASME Y14.5M-1994
18
FN8125.1
May 30, 2006
X5001
Plastic Dual-In-Line Packages (PDIP)
E
D
A2
SEATING
PLANE
L
N
A
PIN #1
INDEX
E1
c
e
b
A1
NOTE 5
1
eA
eB
2
N/2
b2
MDP0031
PLASTIC DUAL-IN-LINE PACKAGE
SYMBOL
PDIP8
PDIP14
PDIP16
PDIP18
PDIP20
TOLERANCE
A
0.210
0.210
0.210
0.210
0.210
MAX
A1
0.015
0.015
0.015
0.015
0.015
MIN
A2
0.130
0.130
0.130
0.130
0.130
±0.005
b
0.018
0.018
0.018
0.018
0.018
±0.002
b2
0.060
0.060
0.060
0.060
0.060
+0.010/-0.015
c
0.010
0.010
0.010
0.010
0.010
+0.004/-0.002
D
0.375
0.750
0.750
0.890
1.020
±0.010
E
0.310
0.310
0.310
0.310
0.310
+0.015/-0.010
E1
0.250
0.250
0.250
0.250
0.250
±0.005
e
0.100
0.100
0.100
0.100
0.100
Basic
eA
0.300
0.300
0.300
0.300
0.300
Basic
eB
0.345
0.345
0.345
0.345
0.345
±0.025
L
0.125
0.125
0.125
0.125
0.125
±0.010
N
8
14
16
18
20
Reference
NOTES
1
2
Rev. B 2/99
NOTES:
1. Plastic or metal protrusions of 0.010” maximum per side are not included.
2. Plastic interlead protrusions of 0.010” maximum per side are not included.
3. Dimensions E and eA are measured with the leads constrained perpendicular to the seating plane.
4. Dimension eB is measured with the lead tips unconstrained.
5. 8 and 16 lead packages have half end-leads as shown.
19
FN8125.1
May 30, 2006
X5001
Thin Shrink Small Outline Plastic Packages (TSSOP)
M8.173
N
INDEX
AREA
E
0.25(0.010) M
E1
2
SYMBOL
3
0.05(0.002)
-A-
INCHES
GAUGE
PLANE
-B1
8 LEAD THIN SHRINK NARROW BODY SMALL OUTLINE
PLASTIC PACKAGE
B M
0.25
0.010
SEATING PLANE
L
A
D
-C-

e
A1
b
A2
c
0.10(0.004)
0.10(0.004) M
C A M
B S
MIN
1. These package dimensions are within allowable dimensions of
JEDEC MO-153-AC, Issue E.
MILLIMETERS
MIN
MAX
NOTES
A
-
0.047
-
1.20
-
A1
0.002
0.006
0.05
0.15
-
A2
0.031
0.051
0.80
1.05
-
b
0.0075
0.0118
0.19
0.30
9
c
0.0035
0.0079
0.09
0.20
-
D
0.116
0.120
2.95
3.05
3
E1
0.169
0.177
4.30
4.50
4
e
0.026 BSC
0.65 BSC
-
E
0.246
0.256
6.25
6.50
-
L
0.0177
0.0295
0.45
0.75
6
8o
0o
N
NOTES:
MAX

8
0o
8
7
8o
Rev. 1 12/00
2. Dimensioning and tolerancing per ANSI Y14.5M-1982.
3. Dimension “D” does not include mold flash, protrusions or gate burrs.
Mold flash, protrusion and gate burrs shall not exceed 0.15mm
(0.006 inch) per side.
4. Dimension “E1” does not include interlead flash or protrusions. Interlead flash and protrusions shall not exceed 0.15mm (0.006 inch) per
side.
5. The chamfer on the body is optional. If it is not present, a visual index
feature must be located within the crosshatched area.
6. “L” is the length of terminal for soldering to a substrate.
7. “N” is the number of terminal positions.
8. Terminal numbers are shown for reference only.
9. Dimension “b” does not include dambar protrusion. Allowable dambar
protrusion shall be 0.08mm (0.003 inch) total in excess of “b” dimension at maximum material condition. Minimum space between protrusion and adjacent lead is 0.07mm (0.0027 inch).
10. Controlling dimension: MILLIMETER. Converted inch dimensions
are not necessarily exact. (Angles in degrees)
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9001 quality systems.
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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20
FN8125.1
May 30, 2006
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