CAT1021LI-30-T2 CATALYST [Catalyst Semiconductor], CAT1021LI-30-T2 Datasheet
CAT1021LI-30-T2
Related parts for CAT1021LI-30-T2
CAT1021LI-30-T2 Summary of contents
Page 1
Supervisory Circuits with I EEPROM, Manual Reset and Watchdog Timer FEATURES Precision Power Supply Voltage Monitor — 5V, 3.3V and 3V systems — Five threshold voltage options Watchdog Timer Active High or Low Reset — Valid reset guaranteed at V ...
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/RESET : RESET OUTPUT (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 secs) (3) Output Short Circuit ...
Page 5
CAPACITANCE T = 25º 1.0MHz Symbol Test (1) C Output Capacitance OUT (1) C Input Capacitance IN AC CHARACTERISTICS V = 2.7V to 5.5V and over the recommended temperature conditions, unless otherwise specified. ...
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 300mils (L) PIN # 1 IDENTIFICATION D TOP VIEW SIDE VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are ...
Page 15
SOIC 8-Lead 150mils (W) PIN # 1 IDENTIFICATION TOP VIEW D e SIDE VIEW 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. Angles in degrees. (2) Complies with ...
Page 16
CAT1021, CAT1022, CAT1023 (1)(2) TSSOP 8-Lead ( TOP VIEW D SIDE VIEW 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. Angles in degrees. (2) Complies with JEDEC ...
Page 17
MSOP 8-Lead ( TOP VIEW SIDE VIEW 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. Angles in degrees. (2) Complies with ...
Page 18
CAT1021, CAT1022, CAT1023 (1)(2) TDFN 8-Pad 3 x 3mm (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 3.00 ...
Page 19
... Z: MSOP ZD4: TDFN 3x3mm Ordering 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-45-T2 CAT1021WI-42-GT3 CAT1021ZD4I-42-T2 CAT1021WI-30-GT3 CAT1021ZD4I-30-T2 CAT1021WI-28-GT3 CAT1021ZD4I-28-T2 CAT1021WI-25-GT3 CAT1021ZD4I-25-T2 ...
Page 20
CAT1021, CAT1022, CAT1023 Ordering 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-45-T2 CAT1022WI-42-GT3 CAT1022ZD4I-42-T2 CAT1022WI-30-GT3 CAT1022ZD4I-30-T2 CAT1022WI-28-GT3 CAT1022ZD4I-28-T2 CAT1022WI-25-GT3 CAT1022ZD4I-25-T2 CAT1022YI-45-GT3 CAT1022YI-42-GT3 CAT1022YI-30-GT3 CAT1022YI-28-GT3 CAT1022YI-25-GT3 Ordering Part Number – CAT1023xx CAT1023LI-45-G CAT1023ZI-45-GT3 ...
Page 21
REVISION HISTORY Date Rev. Reason 9/25/2003 F Added Green Package logo Updated DC Operating Characteristic notes Updated Reliability Characteristics notes 11/7/2003 G Eliminated Automotive temperature range Updated Ordering Information with “Green” package codes Updated Reset Circuit AC Characteristics 4/12/2004 H ...