hn58c1001t-15e Renesas Electronics Corporation., hn58c1001t-15e Datasheet - Page 19

• Manufacturer Part Number: hn58c1001t-15e
• Description: Memory>eeprom>parallel Eeprom
• Manufacturer: Renesas Electronics Corporation.

HN58C1001 Series
3. Software data protection
Note: There are some differences between Renesas Technology’s and other company’s for enable/disable
Rev.8.00, Nov. 27.2003, page 19 of 21
To prevent unintentional programming, this device has the software data protection (SDP) mode. The
SDP is enabled by inputting the following 3 bytes code and write data. SDP is not enabled if only the 3
bytes code is input. To program data in the SDP enable mode, 3 bytes code must be input before write
data.
The SDP mode is disabled by inputting the following 6 bytes code. Note that, if data is input in the SDP
disable cycle, data can note be written.
The software data protection is not enabled at the shipment.
sequence of software data protection. If there are any questions , please contact with Renesas
Technology’s sales offices.
AAAA or 2AAA
Write address
Address
5555
5555
AAAA or 2AAA
AAAA or 2AAA
Address
5555
5555
5555
5555
Write data }
Data
AA
A0
55
Normal data input
Data
AA
AA
55
80
55
20