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參數(shù)資料
| 型號： | PUMA68FV32006M-90 |
| 元件分類： | PROM |
| 英文描述： | 1M X 32 FLASH 3.3V PROM MODULE, 90 ns, PQMA68 |
| 封裝： | PLASTIC, LCC-68 |
| 文件頁數(shù)： | 5/21頁 |
| 文件大?。?/td> | 174K |
| 代理商： | PUMA68FV32006M-90 |
PUMA 68FV32006/A - 90/12/15
Issue 1.3 : December 1999
13
NOTES:
2. All values are in hexadecimal.
3. Except when reading array or autoselect data, all bus cycles are write operations.
4. All address bits are don't cares for unlock and command cycles, except when SA or PA required.
5. No unlock or command cycles required when reading array data.
6. The reset command is required to return to reading array data when device is in the autoselect mode, or if DQ5 goes
high (while device is providing status data.
7. The fourth cycle of the autoselect command sequence is a read cycle.
8. The data is 00h for an unprotected sector and 01h for a protected sector.
9. The system may read and program in non-erasing sectors, or enter the autoselect mode, when in the Erase
Suspend mode. The Erase Suspend command is valid only during a sector erase operation.
10. The Erase Resume command is valid only during the Erase Suspend mode.
The read or reset operation is initiated by writing the read/reset command sequence into the command regis-
ter. Microprocessor read cycles retrieve array data from the memory. The device remains enabled for reads
until the command register contents are altered.
The device will automatically power-up in the read/reset state. In this case, a command sequence is not
required to read data. Standard microprocessor read cycles will retrieve array data. This default value ensures
that no spurious alteration of memory content occurs during the power transition. Refer to the AC Read
Characteristics and Waveforms for specific timing parameters.
Sectors which have previously been protected from being programmed or erased may be unprotected using
the Sector Unprotect Algorithm. All sectors must be placed in the protection mode using the protection
algorithm before unprotection can proceed.
A special high voltage for unprotection V
SP is defined to be 12V+/-0.5V.
The unprotection mode is entered by setting OE to V
ID or VSP, WE to VSP, A5 to VIH and A0=A9 to VIL. Unprotect
is invoked by applying to negative pulses on CS for a period of t
WPP2.
Command
Sequence
Bus
Write
Cycles
Req'd
First Bus
Write Cycle
Second Bus
Write Cycle
Third Bus
Write Cycle
Fourth Bus
Read/Write
Cycle
Fifth Bus
Write Cycle
Sixth Bus
Write Cycle
Read (Note 5)
Reset
Autoselect
(Note 7)
Program
Chip Erase
Sector Erase
Sector Erase Suspend (Note 9)
Sector Erase Resume (Note 10)
1
4
6
Addr
Data
Addr
Data
RA
XXX
RD
FO
80
XXX
AA
55
XXX
A0
PA
XXX
PD
AA
XXX
55
XXX
SA
10
30
Erase can be suspended during sector erase with Addr (don't care) Data (B0)
Erase can be resumed after suspend with Addr (Don't Care), Data (30)
1
Sec t or Protec t
V eri fy (No te 8)
90
XXX
(SA)
X02
00
01
80
XXX
AA
55
XXX
AA
XXX
55
Bus Cycles (Notes 2-4)
COMMAND DEFINITIONS
Read / Reset Command
Sector Unprotect
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PUMA68FV32006X-12 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| PUMA68FV32006X-15 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| PUMA68FV32006X-90 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| PUMA68FV32006XI-12 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
| PUMA68FV32006XI-15 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EEPROM |
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