Substituting the output frequency of 1 Hz and a standard capacitor value of 0.1
μF,
the necessary R
C
resistance of
7.14 M can be calculated.
In setting the output frequency of both timers, the TS3004 offers an advantage because it only requires one
component instead of the two external components required by the CMOS555.
To compare the supply currents of both timers side-by-side, a few supply voltages were applied while both supply
currents were recorded. Table 1 displays the results.
Table 1. Supply Current per Supply Voltage
Supply Voltage
1.5 V
2.5 V
3.3 V
TS3004
Supply Current
1.9
μA
2.0
μA
2.3
μA
CMOS555
Supply Current
50
μA
81
μA
87
μA
As shown in Table 1, at 1.5 V, the TS3004 consumes a factor of 26 less supply current. With a 2.5 V supply, the
TS3004 consumes a factor of 40 less supply current. With a 3.3 V supply, the TS3004 consumes a factor of 38 less
supply current. In summary, the CMOS555 IC uses much more supply current than can be supported in battery or
portable applications.
For all voltages within its supply range, the TS3004 saves a significant amount of supply current, which can help
extend battery life in battery-powered applications. These applications include ultra-long life, low-frequency
battery-powered/portable applications, such as micropower PWM control, pulse-position modulation control, clock
generation, and sequential timing. The TS3004 can also be used as a low-parts-count micropower oscillator and
compact replacement for crystal and ceramic oscillators.
For additional information, see the following:
TS3004
timer IC
TS3004 data sheet
Silicon Labs’ family of timer ICs
2
Rev. 1.0
Smart.
Connected.
Energy-Friendly
Products
www.silabs.com/products
Quality
www.silabs.com/quality
Support and Community
community.silabs.com
Disclaimer
Silicon Laboratories intends to provide customers with the latest, accurate, and in-depth documentation of all peripherals and modules available for system and software implementers
using or intending to use the Silicon Laboratories products. Characterization data, available modules and peripherals, memory sizes and memory addresses refer to each specific
device, and "Typical" parameters provided can and do vary in different applications. Application examples described herein are for illustrative purposes only. Silicon Laboratories
reserves the right to make changes without further notice and limitation to product information, specifications, and descriptions herein, and does not give warranties as to the accuracy
or completeness of the included information. Silicon Laboratories shall have no liability for the consequences of use of the information supplied herein. This document does not imply
or express copyright licenses granted hereunder to design or fabricate any integrated circuits. The products must not be used within any Life Support System without the specific
written consent of Silicon Laboratories. A "Life Support System" is any product or system intended to support or sustain life and/or health, which, if it fails, can be reasonably expected
to result in significant personal injury or death. Silicon Laboratories products are generally not intended for military applications. Silicon Laboratories products shall under no
circumstances be used in weapons of mass destruction including (but not limited to) nuclear, biological or chemical weapons, or missiles capable of delivering such weapons.
Trademark Information
Silicon Laboratories Inc., Silicon Laboratories, Silicon Labs, SiLabs and the Silicon Labs logo, CMEMS®, EFM, EFM32, EFR, Energy Micro, Energy Micro logo and combinations
thereof, "the world’s most energy friendly microcontrollers", Ember®, EZLink®, EZMac®, EZRadio®, EZRadioPRO®, DSPLL®, ISOmodem ®, Precision32®, ProSLIC®, SiPHY®,
USBXpress® and others are trademarks or registered trademarks of Silicon Laboratories Inc. ARM, CORTEX, Cortex-M3 and THUMB are trademarks or registered trademarks of
ARM Holdings. Keil is a registered trademark of ARM Limited. All other products or brand names mentioned herein are trademarks of their respective holders.
Microchip MCU
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
