- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385199 > BU9877FV (Rohm CO.,LTD.) Serial interface IC for DIMMs supporting plug & play PDF資料下載
參數(shù)資料
| 型號： | BU9877FV |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | Serial interface IC for DIMMs supporting plug & play |
| 中文描述： | 對DIMM的串行接口芯片，支持即插即用 |
| 文件頁數(shù)： | 5/9頁 |
| 文件大小： | 95K |
| 代理商： | BU9877FV |
5
Memory ICs
BU9877FV
Operation timing characteristics (unless otherwise noted, Ta = – 40 to + 85°C , Vcc = 2.7V to 5.5V)
Parameter
Symbol
Typ.
Max.
Min.
Unit
Data clock HIGH time
t HIGH
—
—
4.0
μ
s
t SU: STA
—
—
Start condition setup time
4.7
μ
s
t PD
—
3.5
—
Output data delay time
μ
s
t DH
—
—
0.3
Output data hold time
μ
s
t SU:STO
—
—
4.7
Stop condition setup time
μ
s
t BUF
—
—
4.7
Bus release time prior to start of transfer
μ
s
t I
—
0.1
Effective noise elimination interval (SCL, SDA pins)
1 V
CC
= 4.5V to 5.5V
2 V
CC
= 2.7V to 5.5V
—
μ
s
t HD: STA
—
—
Start condition hold time
4.0
μ
s
t F
—
0.3
SDA / SCL fall time
—
μ
s
t R
—
SDA / SCL rise time
1.0
—
μ
s
t LOW
Data clock LOW time
—
—
4.7
μ
s
t HD: DAT
—
—
Input data hold time
0
ns
t SU: DAT
—
—
Input data setup time
250
ns
t WR1
—
10
—
ms
t WR2
—
15
—
ms
Internal write cycle time
1
2
(3) Start condition (start bit recognition)
Before executing the various commands, a start condi-
tion (start bit) must be input. This is recognized when
SCL is HIGH and SDA falls from HIGH to LOW.
If a start condition is not input, no commands will be
received.
(4) Stop condition (stop bit recognition)
To terminate the various commands, a stop condition
(stop bit) must be input. This is recognized when SCL
is HIGH and SDA rises from LOW to HIGH.
(5) Precautions concerning the write command
With the write command, internal writing is initiated by
inputting the stop bit after the data has been input.
(6) Device addressing (specifying the slave address)
The master address should be output first, followed by
the start condition, and then the slave address. The
first four bits of the slave address are used to recog-
nize the device type. The device code for this IC is
fixed at "1010". When accessing the write protect regis-
ter, a device code of "0110" is used.
The next three bits of the slave address (A2, A1, A0)
are used to select the device, and the IC begins to
function only if the data input for A2 to A0 matches the
states of input pins A2 to A0. Consequently, up to eight
of these ICs may be connected on the same bus,
depending on the combination of A2 to A0.
The last bit of the slave address (R / W) is used to
specify either writing or reading, and is as shown
below.
R / W set to 0: Writing or Random Read
R / W set to 1: Reading
Device type
Device address
Access to write protect register
Access to memory
A2
A2
A0
A0
A1
A1
0 1 1 0
1 0 1 0
R / W
W
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| BUF725D | SILICON NPN HIGH VOLTAGE SWITCHING TRANSISTOR |
| BUJ100LR | NPN power transistor |
| BUJ100 | NPN power transistor |
| BUJ103AD | NPN power transistor |
| BUJ103AX | NPN power transistor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BU9880GUL-W | 制造商:ROHM 制造商全稱:Rohm 功能描述:WL-CSP EEPROM family I2C BUS |
| BU9880GUL-W_10 | 制造商:ROHM 制造商全稱:Rohm 功能描述:WL-CSP EEPROM family I2C BUS |
| BU9880GUL-WE2 | 功能描述:電可擦除可編程只讀存儲器 電可擦除可編程只讀存儲器 Serial-2Wire 64Kb RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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 |
| BU9881 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:I2C Serial EEPROM |
| BU9881F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:I2C Serial EEPROM |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。