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參數(shù)資料
| 型號： | 93LC46B/PROC |
| 元件分類： | PROM |
| 英文描述： | 64 X 16 MICROWIRE BUS SERIAL EEPROM, PDIP8 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 250K |
| 代理商： | 93LC46B/PROC |
93LC46A/B
DS21173E-page 6
2000 Microchip Technology Inc.
3.6
ERASE/WRITE Disable and Enable
(EWDS/EWEN)
The 93LC46A/B powers up in the ERASE/WRITE Dis-
able (EWDS) state. All programming modes must be
preceded by an ERASE/WRITE Enable (EWEN)
instruction. Once the EWEN instruction is executed,
programming remains enabled until an EWDS instruc-
tion is executed or Vcc is removed from the device. To
protect against accidental data disturbance, the EWDS
instruction can be used to disable all ERASE/WRITE
functions and should follow all programming opera-
tions. Execution of a READ instruction is independent
of both the EWEN and EWDS instructions.
3.7
READ
The READ instruction outputs the serial data of the
addressed memory location on the DO pin. A dummy
zero bit precedes the 8-bit (93LC46A) or 16-bit
(93LC46B) output string. The output data bits will tog-
gle on the rising edge of the CLK and are stable after
the specified time delay (TPD). Sequential read is pos-
sible when CS is held high. The memory data will auto-
matically cycle to the next register and output
sequentially.
FIGURE 3-4:
EWDS TIMING
FIGURE 3-5:
EWEN TIMING
FIGURE 3-6:
READ TIMING
CS
CLK
DI
10
00
0
X
X
TCSL
1X
CS
CLK
DI
00
1
X
TCSL
CS
CLK
DI
DO
11
0
An
A0
HIGH-Z
0Dx
D0
Dx
D0
Dx
D0
相關PDF資料 |
PDF描述 |
|---|---|
| 93LC46BT/SN128 | 64 X 16 MICROWIRE BUS SERIAL EEPROM, PDSO8 |
| 93LC46BT/SN101 | 64 X 16 MICROWIRE BUS SERIAL EEPROM, PDSO8 |
| 93LC46BT/SN | 64 X 16 MICROWIRE BUS SERIAL EEPROM, PDSO8 |
| 93LC46BX/SNE32 | 64 X 16 MICROWIRE BUS SERIAL EEPROM, PDSO8 |
| 93LC46A/P | 128 X 8 MICROWIRE BUS SERIAL EEPROM, PDIP8 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 93LC46B-SM | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:1K 2.5V Microwire Serial EEPROM |
| 93LC46BSN | 制造商:Microchip Technology Inc 功能描述: |
| 93LC46B-SN | 制造商:Microchip Technology 功能描述:1k(64~16) 2MHz 2.5V to 5.5V VA / Microwire 8SOIC Bulk |
| 93LC46B-ST | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:1K 2.5V Microwire Serial EEPROM |
| 93LC46BT-/SM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microwire Serial EEPROM |
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