전자부품 데이터시트 검색엔진 |
|
AM28F020A-90FC 데이터시트(PDF) 18 Page - Advanced Micro Devices |
|
AM28F020A-90FC 데이터시트(HTML) 18 Page - Advanced Micro Devices |
18 / 35 page 18 Am28F020A This detailed information is for your reference. It may prove easier to always issue the Reset command two consecutive times. This eliminates the need to deter- mine if you are in the Setup Program state or not. In-System Programming Considerations Flash memories can be programmed in-system or in a standard PROM programmer. The device may be sol- dered to the circuit board upon receipt of shipment and programmed in-system. Alternatively, the device may initially be programmed in a PROM programmer prior to soldering the device to the circuit board. Auto Select Command AMD’s Flash memories are designed for use in appli- cations where the local CPU alters memory contents. In order to correctly program any Flash memories in-system, manufacturer and device codes must be accessible while the device resides in the target system. PROM programmers typically access the sig- nature codes by raising A9 to a high voltage. However, multiplexing high voltage onto address lines is not a generally desired system design practice. The device contains an Auto Select operation to supple- ment traditional PROM programming methodologies. The operation is initiated by writing 80h or 90h into the command register. Following this command, a read cycle address 0000h retrieves the manufacturer code of 01h (AMD). A read cycle from address 0001h returns the device code (see the Auto Select Code table of the corresponding device data sheet). To terminate the op- eration, it is necessary to write another valid command, such as Reset (00h or FFh), into the register. |
유사한 부품 번호 - AM28F020A-90FC |
|
유사한 설명 - AM28F020A-90FC |
|
|
링크 URL |
개인정보취급방침 |
ALLDATASHEET.CO.KR |
ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크교환 | 제조사별 검색 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |