![Infineon Cypress S29GL01GS Скачать руководство пользователя страница 11](http://html1.mh-extra.com/html/infineon/cypress-s29gl01gs/cypress-s29gl01gs_manual_2055421011.webp)
Document Number: 001-98285 Rev. *R
Page 10 of 108
S29GL01GS/S29GL512S
S29GL256S/S29GL128S
2.4
Status Register ASO
The Status Register ASO contains a single word of registered volatile status for Embedded Algorithms. When the Status Register
read command is issued, the current status is captured (by the rising edge of WE#) into the register and the ASO is entered. The
Status Register content appears on all word locations. The first read access exits the Status Register ASO (with the rising edge of
CE# or OE#) and returns to the address space map in use when the Status Register read command was issued. Write commands
will not exit the Status Register ASO state.
2.5
Data Polling Status ASO
The Data Polling Status ASO contains a single word of volatile memory indicating the progress of an EA. The Data Polling Status
ASO is entered immediately following the last write cycle of any command sequence that initiates an EA. Commands that initiate an
EA are:
Word Program
Program Buffer to Flash
Chip Erase
Sector Erase
Erase Resume / Program Resume
Program Resume Enhanced Method
Blank Check
Lock Register Program
Password Program
PPB Program
All PPB Erase
Engineering Note: The reset and write buffer abort reset commands require very short time to execute so data polling is not
supported for these commands.The Data Polling Status word appears at all word locations in the device address space. When an
EA is completed the Data Polling Status ASO is exited and the device address space returns to the address map mode where the
EA was started.
2.6
Secure Silicon Region ASO
The Secure Silicon Region (SSR) provides an extra flash memory area that can be programmed once and permanently protected
from further changes i. e. it is a One Time Program (OTP) area. The SSR is
1024 bytes in length. It consists of 512 bytes for Factory Locked Secure Silicon Region and 512 bytes for Customer Locked Secure
Silicon Region.
The sector address supplied during the Secure Silicon Entry command selects the Flash Memory Array sector that is overlaid by the
Secure Silicon Region address map. See
for ASO Entry timing requirements. The SSR is overlaid starting
at location 0 in the selected sector. Use of the sector 0 address is recommended for future compatibility. While the SSR ASO is
entered the content of all other sectors is undefined. Locations above the maximum defined address of the SSR ASO to the
maximum address of the selected sector have undefined data.
Table 2.6
Secure Silicon Region
Word Address Range
Content
Size
(SA) + 0000h to 00FFh
Factory Locked Secure Silicon Region
512 bytes
(SA) + 0100h to 01FFh
Customer Locked Secure Silicon Region
512 bytes
(SA) + 0200h to FFFFh
Undefined
127 kbytes