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參數(shù)資料
| 型號： | CAT33C804AJA-TE13 |
| 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)： | 12/14頁 |
| 文件大?。?/td> | 89K |
| 代理商： | CAT33C804AJA-TE13 |
Preliminary
CAT33C804A
12
Doc. No. 25044-00 2/98
INSTRUCTION SET
DISAC
Disable Access
1000 1000
This instruction will lock the memory from all program/
erase operations regardless of the contents of the memory
pointer. A write can be accomplished only by first enter-
ing the ENAC instruction followed by a valid access
code.
ENAC
Enable Access
1100 0101
[Access Code]
In the protected mode, this instruction, followed by a
valid access code, unlocks the device for read/write/
clear access.
WMPR
Write Memory Pointer Register
1100 0100
[A15–A8] [A7–A0]
(x8 organization)
[A7–A0]
(x16 organization)
1100 0100
The WMPR instruction followed by 8 or 16 bits of
address (depending on the organization) will move the
pointer to the newly specified address.
MACC
Modify Access Code
1101
[Length] [Old code] [New code]
[New code]
This instruction requires the user to enter the old access
code, if one was set previously, followed by the new
access code and a re-entry of the new access code for
verification. Within the instruction format, the variable
[Length] designates the length of the access code as the
following:
[Length] = [0] No access code. Set device to unpro-
tected mode.
[Length] = [1–8] Length of access code is 1 to 8 bytes.
[Length] = [>8] Illegal number of bytes. The CAT33C804A
will ignore the rest of the transmission.
RMPR
Read Memory Pointer Register
1100 1010
Output the content of the memory pointer register to the
serial output port.
OVMPR
Override Memory Pointer Register
Figure 14. ERAL Timing (x8 Format)
33C804 F15
Figure 15. ERAL Timing (x16 Format)
33C804 F16
CS
DI
HIGH-Z
DO
OP0–OP7
tEW
BUSY(1)
OP CODE
OP0–OP7
OP CODE
NEXT INSTRUCTION
CS
DI
HIGH-Z
DO
OP0–OP7
tEW
BUSY(1)
OP CODE
OP0–OP7
OP CODE
NEXT INSTRUCTION
Note:
(1)
DO becomes low to indicate busy status if ENBSY was previously executed. If ENBSY was not previously executed, DO will be in the
High-Z condition.
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| CAT33C804AJI-TE13 | 4K-Bit Secure Access Serial E2PROM |
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| CAT33C804API-TE13 | 4K-Bit Secure Access Serial E2PROM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT33C804AJITE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4K-Bit Secure Access Serial E2PROM |
| CAT33C804AJI-TE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4K-Bit Secure Access Serial E2PROM |
| CAT33C804AJI-TE7 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Serial EEPROM |
| CAT33C804AJTE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4K-Bit Secure Access Serial E2PROM |
| CAT33C804AJ-TE13 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:4K-Bit Secure Access Serial E2PROM |
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