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參數(shù)資料
| 型號： | CAT35C804A |
| 英文描述： | 4K-Bit Secure Access Serial E2PROM |
| 中文描述： | 4K的位安全接入串行E2PROM |
| 文件頁數(shù)： | 8/14頁 |
| 文件大小： | 88K |
| 代理商： | CAT35C804A |
Preliminary
CAT35C804A
8
Doc. No. 25043-00 2/98
DEVICE OPERATION
INSTRUCTIONS
The CAT35C804A instruction set includes 19 instruc-
tions.
Six instructions are related to security or write protection:
DISAC
ENAC
MACC
OVMPR
RMPR
WMPR
Disable Access
Enable Access
Modify Access Code
Override Memory Pointer Register
Read Memory Pointer Register
Write Memory Pointer Register
Six instructions are READ/WRITE/ERASE instructions:
ERAL
ERASE
READ
RSEQ
WRAL
WRITE
Clear All Locations
Clear Memory Locations
Read Memory
Read Sequentially
Write All
Write memory
Note: All write instructions will automatically perform a clear before
writing data.
Seven instructions are used as control and status func-
tions:
DISBSY
ENBSY
EWEN
EWDS
NOP
ORG
RSR
Disable Busy
Enable Busy
Program/Erase Enable
Program/Erase Disable
No Operation
Select Memory Organization
Read Status Register
UNPROTECTED MODE
As shipped from the factory, the CAT35C804A is in the
unprotected mode. The access code length is set to 0,
and the memory pointer is at address 00 hex. While in
this mode, any portion of the E
2
PROM array can be read
or written to without an access code. A portion of the
memory may be protected from any write or clear
operation by setting the memory pointer to the appropri-
ate address via the WMPR (Write Memory Pointer
Register) instruction:
WMPR
[address]
Figure 8. EWEN/EWDS Timing (x8 Format)
5076 FHD F11
CS
DI
DO
OP0–OP7
OP CODE
HIGH-Z
Figure 9. EWEN/EWDS Timing (x16 Format)
CS
DI
DO
OP0–OP7
OP CODE
HIGH-Z
5076 FHD F11
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT35C804ACI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Serial EEPROM |
| CAT35C804ADI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Serial EEPROM |
| CAT35C804AJATE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4K-Bit Secure Access Serial E2PROM |
| CAT35C804AJITE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4K-Bit Secure Access Serial E2PROM |
| CAT35C804AJI-TE13 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Serial EEPROM |
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