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Discussion Groups | 68HC12 | Supervisory device
Join our technical discussions about Freescale Microcontrollers: M68HC12. (Freescale Semiconductor is a Subsidiary of Motorola).
Supervisory device - kp_venu - Sep 3 23:03:00 2002
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Hi All, Has anyone used DS1811 or DS1233 with D60A controller? Presently I'm using MC34164 but I want to add a power-on delay in RESET line. Any help? Best Regards, Venu |
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RE: Supervisory device - Killingsworth, Steve - Sep 4 8:06:00 2002
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We use the ADM809LART from Analog Devices on a DG128A MCU. It monitors Vcc and provides power up reset delay. It has performed well. -----Original Message----- From: kp_venu [mailto:] Sent: Wednesday, September 04, 2002 12:04 AM To: Subject: [68HC12] Supervisory device Hi All, Has anyone used DS1811 or DS1233 with D60A controller? Presently I'm using MC34164 but I want to add a power-on delay in RESET line. Any help? Best Regards, Venu -------------------------------------------------------- To unsubscribe from this group, send an email to: To learn more about Motorola Microcontrollers, please visit http://www.motorola.com/mcu This message contains information intended only for the use of the addressee named above. It may also be confidential and/or privileged. If you are not the intended recipient of this message you are hereby notified that you must not disseminate copy or take any action in reliance on it. If you have received this message in error please notify the sender. |
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RE: Supervisory device - Kelley, Dale - Sep 4 10:12:00 2002
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watch out if you are using the COP timer, it takes very little delay (5us) to render
it useless Dale Kelley -----Original Message----- From: kp_venu [mailto:] Sent: Wednesday, September 04, 2002 12:04 AM To: Subject: [68HC12] Supervisory device Hi All, Has anyone used DS1811 or DS1233 with D60A controller? Presently I'm using MC34164 but I want to add a power-on delay in RESET line. Any help? Best Regards, Venu -------------------------------------------------------- To unsubscribe from this group, send an email to: To learn more about Motorola Microcontrollers, please visit http://www.motorola.com/mcu |
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Re: Supervisory device - Carl Ungvarsky - Sep 4 10:27:00 2002
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I have been using the MAX706CSA for several years with the 68HC812A4 and the 68HC912B32 with good results. It has power down reset, reset switch input, and watchdog. As I recall one of the inputs allows RC to provide a small power on delay. >Hi All, >Has anyone used DS1811 or DS1233 with D60A controller? >Presently I'm using MC34164 but I want to add a power-on delay in >RESET line. >Any help? >Best Regards, >Venu _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com |
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Re: Supervisory device - Kerry Berland - Sep 4 12:23:00 2002
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We have used the L4949 voltage regulator, made by ON (formerly a Motorola part) and by ST. It provides +5V regulated, very low drop-out, very low quiescent current. Provides delayed reset. Also has an additional uncommitted comparator that we used with an external resistive divider network to sense loss of VBATT, causing an interrupt to the MCU, telling it that it's time to save current status into EEPROM. With sufficient hold-up capacitors, the MCU had time to save data. We used this chip to power the MCU, and an additional regulator chip-- with enable-- to power peripheral I/O. That other chip would be shut down in sleep mode. Believe that the L4949 was designed especially for automotive. This design went into volume production and worked out well. Hope this is helpful. Best regards, Kerry Berland Silicon Engines 2101 Oxford Road Des Plaines, IL 60018 USA 847-803-6860 Fax 847-803-6870 ----- Original Message ----- From: kp_venu To: Sent: Tuesday, September 03, 2002 11:03 PM Subject: [68HC12] Supervisory device Hi All, Has anyone used DS1811 or DS1233 with D60A controller? Presently I'm using MC34164 but I want to add a power-on delay in RESET line. Any help? Best Regards, Venu Yahoo! Groups Sponsor ADVERTISEMENT -------------------------------------------------------- To unsubscribe from this group, send an email to: To learn more about Motorola Microcontrollers, please visit http://www.motorola.com/mcu Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. [Non-text portions of this message have been removed] |
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Re: Supervisory device - kp_venu - Sep 4 22:48:00 2002
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Thanks to All, I think ADM809LART is a right device.(Low cost compare to DS1811) Thanks and Regards, Venu --- In 68HC12@y..., "Kelley, Dale" <Dale.Kelley@a...> wrote: > watch out if you are using the COP timer, it takes very little delay (5us) to render it useless > Dale Kelley |
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