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PDF CAT13001 Data sheet ( Hoja de datos )

Número de pieza CAT13001
Descripción (CAT130xx) Voltage Supervisor
Fabricantes Catalyst Semiconductor 
Logotipo Catalyst Semiconductor Logotipo



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CAT130xx
Voltage Supervisor with Microwire Serial
CMOS EEPROM
FEATURES
„ Precision Power Supply Voltage Monitor
ƒ 5V, 3.3V, 3V & 2.5V systems
ƒ 7 threshold voltage options
„ Active High or Low Reset
ƒ Valid reset guaranteed at VCC = 1 V
„ High Speed Operation
„ Selectable x8 or x16 memory organization
„ Low power CMOS technology
„ 1,000,000 Program/Erase cycles
„ 100 year data retention
„ Industrial temperature range
„ RoHS-compliant 8-pin SOIC package
For Ordering Information details, see page 13.
PIN CONFIGURATION
SOIC (W)
CS 1
SK 2
DI 3
DO 4
8 VCC
7 RST/ R¯¯S¯T¯
6 ORG
5 GND
DESCRIPTION
The CAT130xx (see table below) are memory and
supervisory solutions for microcontroller based
systems. A CMOS serial EEPROM memory and a
system power supervisor with brown-out protection
are integrated together. Memory interface is via
Microwire serial protocol.
The CAT130xx provides a precision VCC sense circuit
with two reset output options: CMOS active low output
or CMOS active high. The RESET output is active
whenever VCC is below the reset threshold or falls
below the reset threshold voltage.
The power supply monitor and reset circuit protect
system controllers during power up/down and against
brownout conditions. Seven reset threshold voltages
support 5V, 3.3V, 3V and 2.5V systems. If power
supply voltages are out of tolerance reset signals
become active, preventing the system microcontroller,
ASIC or peripherals from operating. Reset signals
become inactive typically 240ms after the supply
voltage exceeds the reset threshold level.
MEMORY SIZE SELECTOR
Product
13001
13004
13008
13016
Memory density
1-Kbit
4-Kbit
8-Kbit
16-Kbit
PIN FUNCTION
Pin Name
CS
SK
DI
DO
GND
ORG
RST/ R¯¯S¯T¯
VCC
Function
Chip Select
Clock Input
Serial Data Input
Serial Data Output
Ground
Memory Organization
Reset Output
Power Supply
Note:
When the ORG pin is connected to VCC, the x16 organization is
selected. When it is connected to ground, the x8 pin is selected. If
the ORG pin is left unconnected, then an internal pullup device will
select the x16 organization.
THRESHOLD SUFFIX SELECTOR
Nominal Threshold
Voltage
4.63V
4.38V
4.00V
3.08V
2.93V
2.63V
2.32V
Threshold Suffix
Designation
L
M
J
T
S
R
Z
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 1121 Rev. A

1 page




CAT13001 pdf
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PIN DESCRIPTION
RESET/R¯¯E¯S¯E¯T¯: The reset output is available in two
versions: CMOS Active Low (CAT130xx9) and CMOS
Active High (CAT130xx1). Both versions are push-pull
outputs for high efficiency.
DI: The serial data input pin accepts op-codes,
addresses and data. The input data is latched on the
rising edge of the SK clock input.
DO: The serial data output pin is used to transfer data
out of the device. The data is shifted out on the rising
edge of the SK clock.
SK: The serial clock input pin accepts the clock
provided by the host and used for synchronizing
communication between host and CAT130xx device.
CS: The chip select input pin is used to enable/disable
the CAT130xx. When CS is high, the device is
selected and accepts op-codes, addresses and data.
Upon receiving a Write or Erase instruction, the falling
edge of CS will start the internal write cycle to the
selected memory location.
ORG: The memory organization input selects the memory
configuration as either register of 16 bits (ORG tied to
VCC or floating) or 8 bits (ORG connected to GND).
DEVICE OPERATION
The CAT130xx products combine the accurate
voltage monitoring capabilities of a standalone voltage
supervisor with the high quality and reliability of
standard EEPROMs from Catalyst Semiconductor.
CAT130xx
RESET CONTROLLER DESCRIPTION
The reset signal is asserted LOW for the CAT130xx9
and HIGH for the CAT130xx1 when the power supply
voltage falls below the threshold trip voltage
and remains asserted for at least 140ms (tPURST) after
the power supply voltage has risen above the
threshold. Reset output timing is shown in Figure 1.
The CAT130xx devices protect μPs against brownout
failure. Short duration VCC transients of 4μsec or less and
100mV amplitude typically do not generate a Reset pulse.
Figure 2 shows the maximum pulse duration of
negative-going VCC transients that do not cause a
reset condition. As the amplitude of the transient goes
further below the threshold (increasing VTH - VCC), the
maximum pulse duration decreases. In this test, the
VCC starts from an initial voltage of 0.5V above the
threshold and drops below it by the amplitude of the
overdrive voltage (VTH - VCC).
TAMB = 25ºC
CAT130xxZ
CAT130xxM
RESET OVERDRIVE VTH - VCC [mV]
Figure 2. Maximum Transient Duration without
Causing a Reset Pulse vs. Overdrive Voltage
VCC
VTH
VRVALID
RESE T
t PURS T
t RPD
t PURS T
t RPD
CAT130xx9
RESE T
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Figure 1. RESET Output Timing
5
CAT130xx1
Doc. No. 1121 Rev. A

5 Page





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PACKAGE OUTLINES
8-LEAD 150 MIL SOIC (W)
E1
E
CAT130xx
D
A
e
b
A1
h x 45
q1
L
C
SYMBOL
A1
A
b
C
D
E
E1
e
h
L
q1
MIN
0.10
1.35
0.33
0.19
4.80
5.80
3.80
0.25
0.40
NOM
1.27 BSC
MAX
0.25
1.75
0.51
0.25
5.00
6.20
4.00
0.50
1.27
For current Tape and Reel information, download the PDF file from:
http://www.catsemi.com/documents/tapeandreel.pdf.
Notes:
(1) All dimensions are in millimeters.
(2) Complies with JEDEC specification MS-012 dimensions.
© 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
11
Doc. No. 1121 Rev. A

11 Page







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