TW490670B - Microcontroller having write enable bit - Google Patents

Microcontroller having write enable bit Download PDF

Info

Publication number
TW490670B
TW490670B TW089104215A TW89104215A TW490670B TW 490670 B TW490670 B TW 490670B TW 089104215 A TW089104215 A TW 089104215A TW 89104215 A TW89104215 A TW 89104215A TW 490670 B TW490670 B TW 490670B
Authority
TW
Taiwan
Prior art keywords
memory
circuit
scope
microcontroller
program
Prior art date
Application number
TW089104215A
Other languages
English (en)
Chinese (zh)
Inventor
Igor Wojewoda
Joseph W Triece
Original Assignee
Microchip Tech Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Microchip Tech Inc filed Critical Microchip Tech Inc
Application granted granted Critical
Publication of TW490670B publication Critical patent/TW490670B/zh

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C16/00—Erasable programmable read-only memories
    • G11C16/02—Erasable programmable read-only memories electrically programmable
    • G11C16/06—Auxiliary circuits, e.g. for writing into memory
    • G11C16/22—Safety or protection circuits preventing unauthorised or accidental access to memory cells
    • G11C16/225—Preventing erasure, programming or reading when power supply voltages are outside the required ranges
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/22—Microcontrol or microprogram arrangements
    • G06F9/24—Loading of the microprogram
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30098—Register arrangements
    • G06F9/30101—Special purpose registers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C16/00—Erasable programmable read-only memories
    • G11C16/02—Erasable programmable read-only memories electrically programmable
    • G11C16/06—Auxiliary circuits, e.g. for writing into memory
    • G11C16/22—Safety or protection circuits preventing unauthorised or accidental access to memory cells

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Microcomputers (AREA)
TW089104215A 1999-03-09 2000-05-05 Microcontroller having write enable bit TW490670B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26470799A 1999-03-09 1999-03-09

Publications (1)

Publication Number Publication Date
TW490670B true TW490670B (en) 2002-06-11

Family

ID=23007269

Family Applications (1)

Application Number Title Priority Date Filing Date
TW089104215A TW490670B (en) 1999-03-09 2000-05-05 Microcontroller having write enable bit

Country Status (6)

Country Link
EP (1) EP1086466A1 (ko)
JP (1) JP2002539542A (ko)
KR (1) KR20010071231A (ko)
CN (1) CN1300432A (ko)
TW (1) TW490670B (ko)
WO (1) WO2000054282A1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI397855B (zh) * 2008-05-07 2013-06-01 Sunplus Mmedia Inc 減少接腳數之方法以及使用其之微處理器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003032089A (ja) * 2001-07-18 2003-01-31 Matsushita Electric Ind Co Ltd リセット機能内蔵マイクロコンピュータ
TWI503818B (zh) 2013-01-21 2015-10-11 Richtek Technology Corp 具共用腳位之馬達控制器與相關控制方法
CN113900709A (zh) * 2021-10-29 2022-01-07 努比亚技术有限公司 一种激活微控制单元mcu下载模式的电路和方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0729386A (ja) * 1993-07-13 1995-01-31 Hitachi Ltd フラッシュメモリ及びマイクロコンピュータ
US5615159A (en) * 1995-11-28 1997-03-25 Micron Quantum Devices, Inc. Memory system with non-volatile data storage unit and method of initializing same
JPH09282302A (ja) * 1996-04-10 1997-10-31 Sanyo Electric Co Ltd マイクロコンピュータ
US5991849A (en) * 1996-04-10 1999-11-23 Sanyo Electric Co., Ltd Rewriting protection of a size varying first region of a reprogrammable non-volatile memory
FR2766594B1 (fr) * 1997-07-24 2000-01-28 Sgs Thomson Microelectronics Dispositif de re-initialisation a commande externe pour une memoire non volatile en circuit integre

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI397855B (zh) * 2008-05-07 2013-06-01 Sunplus Mmedia Inc 減少接腳數之方法以及使用其之微處理器

Also Published As

Publication number Publication date
WO2000054282A1 (en) 2000-09-14
JP2002539542A (ja) 2002-11-19
KR20010071231A (ko) 2001-07-28
CN1300432A (zh) 2001-06-20
EP1086466A1 (en) 2001-03-28

Similar Documents

Publication Publication Date Title
TW486668B (en) A single-chip data processing apparatus incorporating an electrically rewritable nonvolatile memory and method of operating the same
TW417060B (en) Programmable access protection in a memory device
US6513113B1 (en) Electronic instrument adapted to be selectively booted either from externally-connectable storage unit or from internal nonvolatile rewritable memory
TW514833B (en) 1-chip microcomputer and IC card using same
TW502150B (en) Computer system initialization via boot code stored in sequential access memory
KR101110994B1 (ko) 에러 동작으로부터 집적 회로를 보호하는 방법 및 장치
US8843695B2 (en) Reversible write-protection for non-volatile semiconductor memory device
JPH0719231B2 (ja) 改良されたアクセス安全装置を備える集積回路
KR20000067864A (ko) 플래시 메모리 카드
KR970071846A (ko) 집적 회로 메모리 디바이스의 내장 자가 테스트 구성
KR920701981A (ko) 디지틀 음원장치 및 그에 이용되는 외부메모리 카트리지
US8799552B2 (en) Microcontroller with special banking instructions
TW490670B (en) Microcontroller having write enable bit
JP4678083B2 (ja) メモリ装置およびメモリアクセス制限方法
TW533411B (en) Burst read incorporating output based redundancy
US8006045B2 (en) Dummy write operations
US6311246B1 (en) IC with dual function clock and device ID circuit
JP2006127648A (ja) 不揮発性記憶装置及び電子機器
TW550807B (en) Semiconductor memory device
JP4899248B2 (ja) 半導体集積回路
US20120179858A1 (en) Memory device
TW200842880A (en) Nonvolatile semiconductor memory device and method of programming same
TW536709B (en) Semiconductor memory and output signal control method and circuit in semiconductor memory
JP4083474B2 (ja) メモリ装置の制御方法およびそのプログラムならびに記録媒体
JP2005301831A (ja) 不揮発性記憶装置、半導体記憶装置及び記憶システム

Legal Events

Date Code Title Description
GD4A Issue of patent certificate for granted invention patent
MM4A Annulment or lapse of patent due to non-payment of fees