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参数资料
| 型号： | PUMA68F4001MB-15 |
| 元件分类： | PROM |
| 英文描述： | 128K X 32 FLASH 5V PROM MODULE, 150 ns, PQMA68 |
| 封装： | PLASTIC, LCC-68 |
| 文件页数： | 2/12页 |
| 文件大小： | 495K |
| 代理商： | PUMA68F4001MB-15 |
PUMA 68F4001-15/17/20
ISSUE 4.1 : AUGUST 1997
10
Operating Modes
Chip Erase Algorithm
The Puma 68F4001 offers a chip erase function in which the entire device can be erased by a six byte algorithm.
Once this code has been entered, the device will set each byte to a high state, (FFh) erasing any stored data. The
device will also internally time this operation so that no external clocks are needed.
The Puma 68F4001 can also be completely erased by setting the entire device to a high state. This is accomplished
by first placing OE at 12 volts with CE low and WE high: when WE is pulsed low for a minimum of 20 ms, the contents
of the entire device will be erased.
The table below shows the logic inputs required to control
the operating modes of each device on the
PUMA 68F4001.
1 = V
IH 0 = VIL X = Don't care
Note : (1) Refer to AC Programming Waveforms
MODE
CS OE
OUTPUTS
Read
Write
Standby
Write Inhibit
WE
0
1
X
1
0
X
1
X
0
I
X
0
Data Out
Data in
High Z
Write Inhibit
Output Disable
Chip Erase
X
1
0
I
High Z
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA 80
TO
ADDRESS 5555
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA 10
TO
ADDRESS 5555
Notes :
(1) Data format: I/O
7 ~I/Oo (Hex.)
(2) Data polling may be used to determine the erase cycle by checking any address for data equal to FFh.
(3) After loading the six byte code, no byte loads are allowed until the completion of the erase cycle. The erase cycle
will time itself to completion within t
WC.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PUMA68F4001MB-17 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 Flash EEPROM Module |
| PUMA68F4001MB-20 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 Flash EEPROM Module |
| PUMA68F4003-12 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 Flash EEPROM Module |
| PUMA68F4003-15 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 Flash EEPROM Module |
| PUMA68F4003-20 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:x32 Flash EEPROM Module |
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