SR1UARU STMicroelectronics

SR1 4 pin Smart Reset Datasheet - production data Applications Wearable Activity tracker Smartwatch Smartglasses UDFN6 (1.00 x 1.45 mm) Features Operating voltage range 2 V to 5.5 V Low supply current 1 A Integrated test mode Single Smart Reset push-button input with fixed extended reset setup delay (t ) from SRC 0.5 s to 10 s in 0.5 s steps (typ.), option with internal input pull-up resistor Push-button controlled reset pulse duration Option 1: fully push-button controlled, no fixed or minimum pulse width guaranteed Option 2: defined output reset pulse duration (t ), factory-programmed REC Single reset output Active low or active high Push-pull or open drain with optional pull- up resistor Fixed Smart Reset input logic voltage levels Operating temperature: -40 C to +85 C UDFN6 package 1.00 mm x 1.45 mm ECOPACK 2 (RoHS compliant, Halogen- Free) May 2014 DocID026048 Rev 2 1/21 This is information on a product in full production. www.st.comContents SR1 Contents 1 Description . 3 1.1 Test mode 3 1.2 Logic diagram . 4 1.3 Pin connections . 4 2 Device overview 5 3 Pin descriptions 6 3.1 Power supply (V ) 6 CC 3.2 Power-up sequence 6 3.3 Ground (V ) . 6 SS 3.4 Smart Reset input (SR) . 6 3.5 Reset output (RST) 6 3.6 RST output undervoltage behavior (for open-drain option) 6 4 Typical application diagrams 7 5 Timing diagrams 9 6 Typical operating characteristics . 10 7 Maximum ratings . 12 8 DC and AC parameters 13 9 Package information 15 10 Tape and reel information 17 11 Part numbering 18 12 Package marking information 19 13 Revision history . 20 2/21 DocID026048 Rev 2