參數(shù)資料
型號(hào)： 93AA76A
廠商： Microchip Technology Inc.
英文描述： 8K Microwire Compatible Serial EEPROM
中文描述： 8K的微絲兼容串行EEPROM
文件頁(yè)數(shù)： 5/28頁(yè)
文件大?。?/td> 372K
代理商： 93AA76A
2006 Microchip Technology Inc.
DS21796H-page 5
93AA76A/B/C, 93LC76A/B/C, 93C76A/B/C
2.0
FUNCTIONAL DESCRIPTION
When the ORG pin (93XX76C) is connected to V
CC
,
the (x16) organization is selected. When it is connected
to ground, the (x8) organization is selected. Instruc-
tions, addresses and write data are clocked into the DI
pin on the rising edge of the clock (CLK). The DO pin is
normally held in a High-Z state except when reading
data from the device, or when checking the Ready/
Busy status during a programming operation. The
Ready/Busy status can be verified during an Erase/
Write operation by polling the DO pin; DO low indicates
that programming is still in progress, while DO high
indicates the device is ready. DO will enter the High-Z
state on the falling edge of CS.
2.1
Start Condition
The Start bit is detected by the device if CS and DI are
both high with respect to the positive edge of CLK for
the first time.
Before a Start condition is detected, CS, CLK and DI
may change in any combination (except to that of a
Start condition), without resulting in any device
operation (Read, Write, Erase, EWEN, EWDS, ERAL
or WRAL). As soon as CS is high, the device is no
longer in Standby mode.
An instruction following a Start condition will only be
executed if the required opcode, address and data bits
for any particular instruction are clocked in.
2.2
Data In/Data Out (DI/DO)
It is possible to connect the Data In and Data Out pins
together. However, with this configuration it is possible
for a “bus conflict” to occur during the “dummy zero”
that precedes the read operation, if A0 is a logic high-
level. Under such a condition the voltage level seen at
Data Out is undefined and will depend upon the relative
impedances of Data Out and the signal source driving
A0. The higher the current sourcing capability of the
driver, the higher the voltage at the Data Out pin. In
order to limit this current, a resistor should be
connected between DI and DO.
2.3
Data Protection
All modes of operation are inhibited when V
CC
is below
a typical voltage of 1.5V for ‘93AA’ and ‘93LC’ devices
or 3.8V for ‘93C’ devices.
The EWEN and EWDS commands give additional
protection against accidentally programming during
normal operation.
After power-up the device is automatically in the EWDS
mode. Therefore, an
EWEN
instruction must be
performed before the initial
ERASE
or
WRITE
instruction
can be executed.
Block Diagram
Note:
When preparing to transmit an instruction,
either the CLK or DI signal levels must be
at a logic low as CS is toggled active high.
Note:
For
command should be performed after
every write operation and an external 10
k
Ω
pull-down protection resistor should be
added to the CS pin.
added
protection,
an
EWDS
Note:
To prevent accidental writes to the array in
the 93XX76C devices, set the PE pin to a
logic low.
Memory
Array
Data Register
Mode
Decode
Logic
Clock
Register
Address
Decoder
Address
Counter
Output
Buffer
DO
DI
ORG*
CS
CLK
V
CC
V
SS
*ORG and PE inputs are not available on
A/B devices.
PE*
相關(guān)PDF資料
PDF描述
93AA76A_06 8K Microwire Compatible Serial EEPROM
93AA76C 8K Microwire Compatible Serial EEPROM
93AA76B 8K Microwire Compatible Serial EEPROM
93AA76 Serial EEPROM
93AA76P Microwire Serial EEPROM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
93AA76A-I/MS 功能描述:電可擦除可編程只讀存儲(chǔ)器 8k 1024 X 8 SERIAL EE,1.8V,IND RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
93AA76A-I/P 功能描述:電可擦除可編程只讀存儲(chǔ)器 8k 1024 X 8 SERIAL EE,1.8V,IND RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
93AA76A-I/SN 功能描述:電可擦除可編程只讀存儲(chǔ)器 8k 1024 X 8 SERIAL EE 1.8V IND RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
93AA76A-I/ST 功能描述:電可擦除可編程只讀存儲(chǔ)器 8k 1024 X 8 SERIAL EE,1.8V,IND RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
93AA76AT-I/MS 功能描述:電可擦除可編程只讀存儲(chǔ)器 8k 1024 X 8 SERIAL EE,1.8V,IND RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*