JPS6476306A - Reset controller - Google Patents
Reset controllerInfo
- Publication number
- JPS6476306A JPS6476306A JP62235555A JP23555587A JPS6476306A JP S6476306 A JPS6476306 A JP S6476306A JP 62235555 A JP62235555 A JP 62235555A JP 23555587 A JP23555587 A JP 23555587A JP S6476306 A JPS6476306 A JP S6476306A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- reset
- case
- outputted
- busy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Techniques For Improving Reliability Of Storages (AREA)
Abstract
PURPOSE:To avoid destruction of the memory contents by outputting a reset signal in case a memory interface busy signal is not outputted at the input of a reset request signal and then receiving a forcible reset permission signal for output of the reset signal in case said busy signal kept valid for a fixed time or longer. CONSTITUTION:An external reset request signal and a memory interface busy signal are supplied into a CPU 1 and a reset signal production part 11 produces a reset signal to reset a system. Then the part 11 outputs a reset signal in case no memory interface busy signal is outputted when the reset request signal is received. A forcible reset permission signal is received from a busy signal time monitor part 12 and the reset signal is outputted in case the busy signal is kept valid for a fixed time and longer. In such a way, the destruction of the memory contents can be avoided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62235555A JPH0823788B2 (en) | 1987-09-18 | 1987-09-18 | Reset controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62235555A JPH0823788B2 (en) | 1987-09-18 | 1987-09-18 | Reset controller |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6476306A true JPS6476306A (en) | 1989-03-22 |
JPH0823788B2 JPH0823788B2 (en) | 1996-03-06 |
Family
ID=16987719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62235555A Expired - Lifetime JPH0823788B2 (en) | 1987-09-18 | 1987-09-18 | Reset controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0823788B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003015780A (en) * | 2001-07-02 | 2003-01-17 | Seiko Epson Corp | Power source controller and power source control method |
WO2004092962A1 (en) * | 2003-04-17 | 2004-10-28 | Fujitsu Limited | Semiconductor device, reset control system, and memory reset method |
US6870786B2 (en) | 2001-12-19 | 2005-03-22 | Kabushiki Kaisha Toshiba | Semiconductor device, nonvolatile semiconductor memory, system including a plurality of semiconductor devices or nonvolatile semiconductor memories, electric card including semiconductor device or nonvolatile semiconductor memory, and electric device with which this electric card can be used |
-
1987
- 1987-09-18 JP JP62235555A patent/JPH0823788B2/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003015780A (en) * | 2001-07-02 | 2003-01-17 | Seiko Epson Corp | Power source controller and power source control method |
US6870786B2 (en) | 2001-12-19 | 2005-03-22 | Kabushiki Kaisha Toshiba | Semiconductor device, nonvolatile semiconductor memory, system including a plurality of semiconductor devices or nonvolatile semiconductor memories, electric card including semiconductor device or nonvolatile semiconductor memory, and electric device with which this electric card can be used |
US7123526B2 (en) | 2001-12-19 | 2006-10-17 | Kabushiki Kaisha Toshiba | Semiconductor device, nonvolatile semiconductor memory, system including a plurality of semiconductor devices or nonvolatile semiconductor memories, electric card including semiconductor device or nonvolatile semiconductor memory, and electric device with which this electric card can be used |
US7372761B2 (en) | 2001-12-19 | 2008-05-13 | Kabushiki Kaisha Toshiba | Semiconductor device, nonvolatile semiconductor memory, system including a plurality of semiconductor devices or nonvolatile semiconductor memories, electric card including semiconductor device or nonvolatile semiconductor memory, and electric device with which this electric card can be used |
WO2004092962A1 (en) * | 2003-04-17 | 2004-10-28 | Fujitsu Limited | Semiconductor device, reset control system, and memory reset method |
Also Published As
Publication number | Publication date |
---|---|
JPH0823788B2 (en) | 1996-03-06 |
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