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参数资料
| 型号： | IS23SC1604-X2 |
| 厂商： | INTEGRATED SILICON SOLUTION INC |
| 元件分类： | PROM |
| 英文描述： | 16-KBIT SECURED SERIAL EEPROM |
| 中文描述： | 2K X 8 3-WIRE SERIAL EEPROM, UUC7 |
| 封装： | WAFER |
| 文件页数： | 4/18页 |
| 文件大小： | 76K |
| 代理商： | IS23SC1604-X2 |
IS23SC1604
12
Integrated Silicon Solution, Inc. — 1-800-379-4774
ADVANCE INFORMATION NV002-0D
01/19/99
ISSI
IS23SC1604 INTERNAL FLAGS
The IS23SC1604’s internal flags enable/disable the read,
write, and erase access to application zones (Refer to
Memory Access Table). All the flags are clear upon power-
on reset (POR). The flags can be set to logic ‘1’ state by
validating the corresponding security code through the
validation process. Once the flag is enabled (‘1’ state), it
cannot be cleared by any operations except POR.
Security Code Valid Comparison Flag (SV)
This flag is set to ‘1’ after the Security Code (SC) is validated
(see Figure 7). This flag protects an unpersonalized card
from unauthorized usage. If the card has already been
personalized, this flag provides master protection for the
application zones (refer to Memory Access Table).
Application Zone 1 Security Code
Valid Comparison Flag (S1)
This flag is set to ‘1’ after the Application Zone 1 Security
Code (SC1) is validated (see Figure 7). This flag provides
access protection for Application Zone 1 (refer to Memory
Access Table).
Application Zone ‘m’ Security Code
Valid Comparison Flag (Sm) where ‘m’ = 2, 3 or 4.
This flag is set to ‘1’ after the Application Zone ‘m’ Security
Code is validated (see Figure 8). This flag provides access
protection for Application Zone ‘m’ (refer to Memory Access
Table).
Application Zone ‘n’ Erase Key
Valid Comparison Flag (Sn) where ‘n’ = 1, 2, 3 or 4.
This flag is set to ‘1’ after the Application Zone ‘n’ Erase Key
is validated (see Figure 7). This flag provides protection for
Application Zone ‘n’ from unauthorized erasure of the zone
(refer to Memory Access Table).
Application Zone ‘n’ write flag (Pn)
where ‘n’ = 1, 2, 3 or 4.
This flag is set to ‘1’ if the first bit of Application Zone ‘n’ is
‘1’ (Bit address: 216 for zone 1, 9816 for zone 2, 11904 for
zone 3, or 13992 for zone 4). This flag enables write access
to the corresponding application zone (refer to Memory
Access Table).
Application Zone ‘n’ read flag (Rn)
where ‘n’ = 1, 2, 3 or 4.
This flag is set to ‘1’ when the second bit of Application Zone
‘n’ is ‘1’ (Bit address: 217 for zone 1, 9817 for zone 2, 11905
for zone 3, or 13993 for zone 4). This flag enables read
access to the corresponding application zone (refer to
Memory Access Table).
相关PDF资料 |
PDF描述 |
|---|---|
| IS23SC1604-X2I | 16-KBIT SECURED SERIAL EEPROM |
| IS23SC1604-X3 | 16-KBIT SECURED SERIAL EEPROM |
| IS23SC1604-X3I | 16-KBIT SECURED SERIAL EEPROM |
| IS23SC1604-X4 | 16-KBIT SECURED SERIAL EEPROM |
| IS23SC1604-X4I | 16-KBIT SECURED SERIAL EEPROM |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IS23SC1604-X2I | 制造商:ISSI 制造商全称:Integrated Silicon Solution, Inc 功能描述:16-KBIT SECURED SERIAL EEPROM |
| IS23SC1604-X3 | 制造商:ISSI 制造商全称:Integrated Silicon Solution, Inc 功能描述:16-KBIT SECURED SERIAL EEPROM |
| IS23SC1604-X3I | 制造商:ISSI 制造商全称:Integrated Silicon Solution, Inc 功能描述:16-KBIT SECURED SERIAL EEPROM |
| IS23SC1604-X4 | 制造商:ISSI 制造商全称:Integrated Silicon Solution, Inc 功能描述:16-KBIT SECURED SERIAL EEPROM |
| IS23SC1604-X4I | 制造商:ISSI 制造商全称:Integrated Silicon Solution, Inc 功能描述:16-KBIT SECURED SERIAL EEPROM |
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