参数资料
| 型号： | 11LC020-E/P |
| 厂商： | Microchip Technology |
| 文件页数： | 8/44页 |
| 文件大小： | 0K |
| 描述： | IC EEPROM 2K FLASH 8PDIP |
| 标准包装： | 60 |
| 格式 - 存储器： | EEPROMs - 串行 |
| 存储器类型： | EEPROM |
| 存储容量： | 2K (256 x 8) |
| 速度： | 100kHz |
| 接口： | UNI/O?（单线） |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
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11AAXXX/11LCXXX
3.3
Acknowledge
FIGURE 3-4:
ACKNOWLEDGE BITS
An Acknowledge routine occurs after each byte is
transmitted, including the start header. This routine
consists of two bits. The first bit is transmitted by the
master, and the second bit is transmitted by the slave.
Note: A MAK must always be transmitted
following the start header.
The Master Acknowledge, or MAK, is signified by trans-
mitting a ‘ 1 ’, and informs the slave that the current
operation is to be continued. Conversely, a Not
MAK (‘ 1 ’)
NoMAK (‘ 0 ’)
SAK (‘ 1 ’)
NoSAK (1)
Acknowledge, or NoMAK, is signified by transmitting a
‘ 0 ’, and is used to end the current operation (and initiate
the write cycle for write operations).
Note 1:
A NoSAK is defined as any sequence that is not a
valid SAK.
Note: When a NoMAK is used to end a WRITE
or WRSR instruction, the write cycle is
not initiated if no bytes of data have
been received.
The slave Acknowledge, or SAK, is also signified by
transmitting a ‘ 1 ’, and confirms proper communication.
However, unlike the NoMAK, the NoSAK is signified by
the lack of a middle edge during the bit period.
Note: In order to guard against bus contention,
a NoSAK will occur after the start
header.
3.4 Device Addressing
A device address byte is the first byte received from the
master device following the start header. The device
address byte consists of a four-bit family code, for the
11XX this is set as ‘ 1010 ’. The last four bits of the
device address byte are the device code, which is
hardwired to ‘ 0000 ’ on the 11XXXX0 devices.
The device code on 11XXXX1 devices is hardwired to
‘ 0001 ’. This allows both 11XXXX0 and 11XXXX1
devices to be used on the same bus without address
conflicts.
A NoSAK will occur for the following events:
? Following the start header
? Following the device address, if no slave on the
FIGURE 3-5:
DEVICE ADDRESS BYTE
ALLOCATION
bus matches the transmitted address
? Following the command byte, if the command is
invalid, including Read, CRRD, Write, WRSR,
SLAVE ADDRESS
MAK SAK
SETAL, and ERAL during a write cycle.
? If the slave becomes out of sync with the master
1
0
1
0
0
0
0
0 (1)
? If a command is terminated prematurely by using
a NoMAK, with the exception of immediately after
the device address.
Note 1:
This bit is a ‘ 1 ’ on the 11XXXX1.
See Figure 3.3 and Figure 3-4 for details.
3.5
Bus Conflict Protection
If a NoSAK is received from the slave after any byte
(except the start header), an error has occurred. The
master should then perform a standby pulse and begin
the desired command again.
To help guard against high current conditions arising
from bus conflicts, the 11XX features a current-limited
output driver. The I OL and I OH specifications describe
the maximum current that can be sunk or sourced,
respectively, by the SCIO pin. The 11XX will vary the
FIGURE 3-3:
ACKNOWLEDGE
output driver impedance to ensure that the maximum
Master
MAK
ROUTINE
Slave
SAK
current level is not exceeded.
DS22067H-page 8
Preliminary
? 2010 Microchip Technology Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 11LC020-ESN | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:1K-16K UNI/O? Serial EEPROM Family Data Sheet |
| 11LC020-ETO | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:1K-16K UNI/O? Serial EEPROM Family Data Sheet |
| 11LC020-ETT | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:1K-16K UNI/O? Serial EEPROM Family Data Sheet |
| 11LC020-I/MNY | 功能描述:电可擦除可编程只读存储器 2K 256 X 8 2.5V SERIAL EE IND RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
| 11LC020-I/MS | 功能描述:电可擦除可编程只读存储器 2K 256 X 8 2.5V SERIAL EE IND RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 |
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