TI MSP430 MCU How2 Info Sheet TI MSP430 MCU Power Backup with EnerChip™ Battery Applications EnerChips are the ideal MCU backup alternative to batteries or supercapacitors, especially when the finished product has limited PCB space, size constraints or needs to be sealed or installed in a hard-toreach location. They are also an excellent choice if you have any of these design requirements: •Battery must be RoHS and WEEE compliant •Product can be discarded without removing battery •Product must have battery installed during shipping via air •Battery must be rechargeable to support a lifetime of power outages •Battery must provide backup power for several hours during a main power failure MSP430 CBC3105 CBC3112 CBC3150 Iq (nA at 3V) Back up time (hrs) Package Size (mm x mm) Back up time (hrs) Package Size (mm x mm) Back up time (hrs) Package Size (mm x mm) 500 10 4x5 24 7x7 100 9x9 Advantages of Combining These Two Parts Optional Charging Mode for MSP430 Holdover Cymbet EnerChips are solid-state, rechargeable batteries with the following characteristics when compared to conventional rechargeable batteries: Q2 •Low self-discharge •Are solder reflow tolerant •Flat discharge voltage profile •High charge/discharge cycle life •Simple voltage controlled charging •Have no flammable solvents to leak or catch fire Documentation R1 470 VDD Q3 U1 CBC31XX VCHG CP C2 VBAT 0.1uF VMODE CN EN RESET VIN VOUT C1 C3 GND 0.1uF •Cymbet Application Note: AN-1028 •Cymbet Evaluation Kits: CBC-EVAL-05B •Data Sheets: TI MSP430 MCU, CBC3105, CBC3112, CBC3150 •All Cymbet Documents and Downloads: http://www.cymbet.com/products/datasheets-downloads.php Q1 0.1uF TEST/SBWTCK P1.7/TA0.2/TDO/TDI DVcc P1.6/TA0.1/TDI/TCLK P2.5/Rosc/CA5 P1.5/TA0.0/TMS DVss P1.4/SMCLK/TCK MSP430F2132IPW XOUT/P2.7/CA7 P1.3/TA0.2 XIN/P2.6/CA6 P1.2/TA0.1 RST/NMI/SBWTDIO P1.1/TA0.0/TA1.0 P2.0/ACLK/A0/CA2 P1.0/TACLK/ADC10CLK/CAOUT P2.1/TAINCLK/SMCLK/A1/CA3 P2.4/TAO.2/A4/Vref/VEref+/CA1 P2.2/TA0.0/A2/CA4/CAOUT P2.3/TA0.1/A3/Vref/VEref-/CA0 P3.0/UCB0STE/UCA0CLK/A5 P3.7/TA1.1/A7 P3.1/UCB0SIMO/UCB0SDA P3.6/TA1.0/A6 P3.2/UCB0SOMI/UCB0SCL P3.5/UCA0RXD/UCA0SOMI P3.3/UCB0CLK/UCA0STE P3.4/UCA0TXD/UCA0SIMO U2 Enerchip to MSP430 Direct Connection U1 CBC31XX VCHG CP C4 VBAT 0.1uF VMODE VDD C5 0.1uF CN EN RESET VIN VOUT GND C6 0.1uF 1 2 3 4 5 6 7 8 9 10 11 12 13 14 TEST/SBWTCK P1.7/TA0.2/TDO/TDI DVcc P1.6/TA0.1/TDI/TCLK P2.5/Rosc/CA5 P1.5/TA0.0/TMS DVss P1.4/SMCLK/TCK MSP430F2132IPW XOUT/P2.7/CA7 P1.3/TA0.2 XIN/P2.6/CA6 P1.2/TA0.1 RST/NMI/SBWTDIO P1.1/TA0.0/TA1.0 P2.0/ACLK/A0/CA2 P1.0/TACLK/ADC10CLK/CAOUT P2.1/TAINCLK/SMCLK/A1/CA3 P2.4/TAO.2/A4/Vref/VEref+/CA1 P2.2/TA0.0/A2/CA4/CAOUT P2.3/TA0.1/A3/Vref/VEref-/CA0 P3.0/UCB0STE/UCA0CLK/A5 P3.7/TA1.1/A7 P3.1/UCB0SIMO/UCB0SDA P3.6/TA1.0/A6 P3.2/UCB0SOMI/UCB0SCL P3.5/UCA0RXD/UCA0SOMI P3.3/UCB0CLK/UCA0STE P3.4/UCA0TXD/UCA0SIMO U2 ©2013 Cymbet Corporation • Tel: +1-763-633-1780 • www.cymbet.com Cymbet, the Cymbet Logo and EnerChip are trademarks of Cymbet Corporation. All Rights Reserved Doc HD-14 Rev A 28 27 26 25 24 23 22 21 20 19 18 17 16 15 D1 Optional, in place of Q1 Evaluation Kits Cymbet EnerChip CBC-EVAL-05B 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Page 1 of 1 28 27 26 25 24 23 22 21 20 19 18 17 16 15