CAT1021LI-30-G ON Semiconductor, CAT1021LI-30-G Datasheet

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CAT1021LI-30-G

Manufacturer Part Number
CAT1021LI-30-G
Description
IC SUPERVISR CPU 2K EEPROM 8PDIP
Manufacturer
ON Semiconductor
Type
Simple Reset/Power-On Resetr
Datasheet

Specifications of CAT1021LI-30-G

Number Of Voltages Monitored
1
Output
Open Drain or Open Collector
Reset
Active High/Active Low
Reset Timeout
130 ms Minimum
Voltage - Threshold
3V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Monitored Voltage
3 V, 3.3 V, 5 V
Manual Reset
Resettable
Watchdog
Watchdog
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Supply Current (typ)
3000 uA
Maximum Power Dissipation
1000 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CAT1021LI-30-G
Manufacturer:
ON Semiconductor
Quantity:
50
Supervisory Circuits with I
EEPROM, Manual Reset and Watchdog Timer
FEATURES
© 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
For Ordering Information details, see page 19.
— 5 V, 3.3 V and 3 V systems
— Five threshold voltage options
— Valid reset guaranteed at V
— WP pin (CAT1021)
— TDFN max height is 0.8 mm
Precision Power Supply Voltage Monitor
Watchdog Timer
Active High or Low Reset
400 kHz I
2.7 V to 5.5 V Operation
Low power CMOS technology
16-Byte Page Write Buffer
Built-in inadvertent write protection
1,000,000 Program/Erase cycles
Manual Reset Input
100 year data retention
Industrial and extended temperature ranges
8-pin DIP, SOIC, TSSOP, MSOP or TDFN
(3 x 3 mm foot-print) packages
2
C Bus
CC
= 1 V
2
C Serial 2k-bit CMOS
1
DESCRIPTION
The CAT1021, CAT1022 and CAT1023 are complete
memory and supervisory solutions for microcontroller-
based systems. A 2k-bit serial EEPROM memory and a
system power supervisor with brown-out protection are
integrated together in low power CMOS technology.
Memory interface is via a 400 kHz I
The CAT1021 and CAT1023 provide a precision V
sense circuit and two open drain outputs: one (RESET)
drives high and the other (RESET
V
CAT1022 has only a RESET
a Write Protect input. The CAT1021 also has a Write
Protect input (WP). Write operations are disabled if WP
is connected to a logic high.
All supervisors have a 1.6 second watchdog timer circuit
that resets a system to a known state if software or a
hardware glitch halts or “hangs” the system. For the
CAT1021 and CAT1022, the watchdog timer monitors
the SDA signal. The CAT1023 has a separate watchdog
timer interrupt input pin, WDI.
The power supply monitor and reset circuit protect
memory and system controllers during power up/down
and against brownout conditions. Five reset threshold
voltages support 5 V, 3.3 V and 3 V 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 200 ms after the supply voltage
exceeds the reset threshold level. With both active high
and low reset signals, interface to microcontrollers and
other ICs is simple. In addition, the RESET
separate input, MR
button manual reset capability.
The on-chip, 2k-bit EEPROM memory features a 16-byte
page. In addition, hardware data protection is provided
by a V
whenever V
reaches the reset threshold during power up.
Available packages include an 8-pin DIP and surface
mount 8-pin SO, 8-pin TSSOP, 8-pin TDFN and 8-pin
MSOP packages. The TDFN package thickness is
0.8mm maximum. TDFN footprint options are 3 x 3mm.
CAT1021, CAT1022, CAT1023
CC
falls below the reset threshold voltage. The
CC
sense circuit that prevents writes to memory
CC
falls below the reset threshold or until V
¯¯¯ , can be used as an input for push-
¯¯¯¯¯¯ output and does not have
¯¯¯¯¯¯ ) drives low whenever
2
C bus.
¯¯¯¯¯¯ pin or a
Doc. No. MD-3009 Rev. P
CC
CC

Related parts for CAT1021LI-30-G

CAT1021LI-30-G Summary of contents

Page 1

Supervisory Circuits with I EEPROM, Manual Reset and Watchdog Timer FEATURES Precision Power Supply Voltage Monitor — 3.3 V and 3 V systems — Five threshold voltage options Watchdog Timer Active High or Low Reset — Valid reset ...

Page 2

CAT1021, CAT1022, CAT1023 BLOCK DIAGRAM EXTERNA L LOAD D OUT ACK V CC WORDADDRESS V SS BUFFERS START/STOP SDA LOGIC XDEC CONTR OL LOGIC WP (CAT1021) RESET Controller Precision MR Vcc Monitor WDI RESET (CAT1023) (CAT1021/23) RESET PIN CONFIGURATION DIP ...

Page 3

PIN DESCRIPTION : RESET OUTPUT ¯¯¯¯¯¯ RESET/RESET (RESET CAT1021/23 Only) ¯¯¯¯¯¯ can be used These are open drain pins and RESET as a manual reset trigger input. By forcing a reset condition on the pin the device will initiate and ...

Page 4

CAT1021, CAT1022, CAT1023 ABSOLUTE MAXIMUM RATINGS Parameters Temperature Under Bias Storage Temperature Voltage on any Pin with Respect to Ground V with Respect to Ground CC Package Power Dissipation Capability (T Lead Soldering Temperature (10 s) (3) Output Short Circuit ...

Page 5

CAPACITANCE T = 25º 1.0 MHz Symbol Test (1) C Output Capacitance OUT (1) C Input Capacitance IN AC CHARACTERISTICS 5.5 V and over the recommended temperature ...

Page 6

CAT1021, CAT1022, CAT1023 RESET CIRCUIT AC CHARACTERISTICS Symbol Parameter t Power-Up Reset Timeout PURST RESET output Delay RDP Glitch Reject Pulse Width GLITCH CC MR Glitch Manual Reset Glitch Immunity t MR Pulse Width ...

Page 7

DEVICE OPERATION Reset Controller Description The CAT1021/22/23 precision RESET controllers ensure correct system operation during brownout and power up/down conditions. They are configured with open drain RESET outputs. During power-up, the RESET outputs remain active until V reaches the V ...

Page 8

CAT1021, CAT1022, CAT1023 Figure 1. RESET Output Timing RVALID t V PURST CC RESE T RESE T Figure 2: MR ¯¯¯ Operation and Timing MR RESET RESET Doc. No. MD-3009 Rev GLITCH t t RPD ...

Page 9

EMBEDDED EEPROM OPERATION The CAT1021/22/23 feature a 2-kbit embedded serial 2 EEPROM that supports the I C Bus data transmission protocol. This Inter-Integrated Circuit Bus protocol defines any device that sends data to the bus transmitter and ...

Page 10

CAT1021, CAT1022, CAT1023 ACKNOWLEDGE After a successful data transfer, each receiving device is required to generate an acknowledge. The acknowledging device pulls down the SDA line during the ninth clock cycle, signaling that it received the 8 bits of data. ...

Page 11

Page Write The CAT1021/22/23 writes bytes of data in a single write cycle, using the Page Write operation. The page write operation is initiated in the same manner as the byte write operation, however instead of terminating ...

Page 12

CAT1021, CAT1022, CAT1023 Acknowledge Polling Disabling of the inputs can be used to take advantage of the typical write cycle time. Once the stop condition is issued to indicate the end of the host’s write opration, the CAT1021/22/23 initiates the ...

Page 13

Immediate/Current Address Read The CAT1021/22/23 address counter contains the address of the last byte accessed, incremented by one. In other words, if the last READ or WRITE access was to address N, the READ immediately following would access data from ...

Page 14

CAT1021, CAT1022, CAT1023 PACKAGE OUTLINE DRAWINGS (1)(2) PDIP 8-Lead 300 mils (L) PIN # 1 IDENTIFICATION D TOP VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC MS-001. Doc. No. MD-3009 Rev. ...

Page 15

SOIC 8-Lead 150 mils (W) PIN # 1 IDENTIFICATION TOP VIEW D e SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MS-012. © 2009 SCILLC. All rights reserved Characteristics subject to ...

Page 16

CAT1021, CAT1022, CAT1023 (1)(2) TSSOP 8-Lead ( TOP VIEW D SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153 Doc. No. MD-3009 Rev. P SYMBOL ...

Page 17

MSOP 8-Lead ( TOP VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-187. © 2009 SCILLC. All rights reserved Characteristics subject to change ...

Page 18

CAT1021, CAT1022, CAT1023 (1)(2) TDFN 8-Pad (ZD4) D PIN#1 INDEX AREA TOP VIEW SYMBOL MIN NOM A 0.70 0.75 A1 0.00 0.02 A3 0.20 REF b 0.23 0.30 D 2.90 3.00 D2 2.20 — E 2.90 ...

Page 19

... Product Package L: PDIP Number 1021 SOIC 1022 TSSOP 1023 MSOP ZD4: TDFN ORDERING INFORMATION Orderable Part Number – CAT1021xx CAT1021LI-45-G CAT1021ZI-45-GT3 CAT1021LI-42-G CAT1021ZI-42-GT3 CAT1021LI-30-G CAT1021ZI-30-GT3 CAT1021LI-28-G CAT1021ZI-28-GT3 CAT1021LI-25-G CAT1021ZI-25-GT3 CAT1021WI-45-GT3 CAT1021ZD4I-45T3* CAT1021WI-42-GT3 CAT1021ZD4I-42T3* CAT1021WI-30-GT3 CAT1021ZD4I-30T3* CAT1021WI-28-GT3 CAT1021ZD4I-28T3* CAT1021WI-25-GT3 CAT1021ZD4I-25T3* CAT1021YI-45-GT3 CAT1021YI-42-GT3 ...

Page 20

CAT1021, CAT1022, CAT1023 Orderable Part Number – CAT1022xx CAT1022LI-45-G CAT1022ZI-45-GT3 CAT1022LI-42-G CAT1022ZI-42-GT3 CAT1022LI-30-G CAT1022ZI-30-GT3 CAT1022LI-28-G CAT1022ZI-28-GT3 CAT1022LI-25-G CAT1022ZI-25-GT3 CAT1022WI-45-GT3 CAT1022ZD4I-45T3* CAT1022WI-42-GT3 CAT1022ZD4I-42T3* CAT1022WI-30-GT3 CAT1022ZD4I-30T3* CAT1022WI-28-GT3 CAT1022ZD4I-28T3* CAT1022WI-25-GT3 CAT1022ZD4I-25T3* CAT1022YI-45-GT3 CAT1022YI-42-GT3 CAT1022YI-30-GT3 CAT1022YI-28-GT3 CAT1022YI-25-GT3 * Part number is not exactly the ...

Page 21

... Update Example of Ordering Information Update Package Outline Drawings 28-Nov/07 M Update Example of Ordering Information Add “MD-“ to document number 3-Nov-08 N Change logo and fine print to ON Semiconductor 5-Mar-09 O Update Ordering Information (Remove 2,000/Reel) 14-Jul-09 P Update Ordering Information table ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein ...

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