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參數(shù)資料
| 型號： | 93LC46B-P |
| 廠商： | Microchip Technology Inc. |
| 元件分類： | EEPROM |
| 英文描述： | 1K 2.5V Microwire Serial EEPROM |
| 中文描述： | 一千2.5V的微型導線串行EEPROM |
| 文件頁數(shù)： | 6/12頁 |
| 文件大小： | 203K |
| 代理商： | 93LC46B-P |
93LC46A/B
DS21173D-page 6
Preliminary
1997 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 toggle
on the rising edge of the CLK and are stable after the
specified time delay (T
PD
). Sequential read is possible
when CS is held high. The memory data will automati-
cally 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
1
0
0
0
0
X
X
T
CSL
1
X
CS
CLK
DI
0
0
1
1
X
T
CSL
CS
CLK
DI
DO
1
1
0
An
A0
HIGH-Z
0
Dx
D0
Dx
D0
Dx
D0
相關PDF資料 |
PDF描述 |
|---|---|
| 93LC46B-SM | 1K 2.5V Microwire Serial EEPROM |
| 93LC46B-SN | 1K 2.5V Microwire Serial EEPROM |
| 93LC46B-ST | 1K 2.5V Microwire Serial EEPROM |
| 93LC46AB | 1K 2.5V Microwire Serial EEPROM |
| 93LC56A | 2K 2.5V Microwire Serial EEPROM(2K位,2.5V,具上掉電數(shù)據(jù)保護電路,Microwire接口EEPROM) |
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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