参数资料
| 型号： | ADM1067ACPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 30/32页 |
| 文件大小： | 0K |
| 描述： | IC SEQUENCER/SUPERVISOR 40-LFCSP |
| 标准包装： | 1 |
| 系列： | Super Sequencer® |
| 类型： | 序列发生器 |
| 监视电压数目： | 10 |
| 输出： | 可编程 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 40-LFCSP-VQ（6x6） |
| 包装： | 托盘 |
| 配用： | EVAL-ADM1067TQEBZ-ND - BOARD EVALUATION FOR ADM1067TQ |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页当前第30页第31页第32页
ADM1067
Block Read
In a block read operation, the master device reads a block of
data from a slave device. The start address for a block read must
be set previously. In the ADM1067, this is done by a send byte
operation to set a RAM address, or a write byte/word operation
to set an EEPROM address. The block read operation itself consists
of a send byte operation that sends a block read command to
the slave, immediately followed by a repeated start and a read
operation that reads out multiple data bytes, as follows:
Error Correction
The ADM1067 provides the option of issuing a packet error
correction (PEC) byte after a write to the RAM, a write to the
EEPROM, a block write to the RAM or EEPROM, or a block
read from the RAM or EEPROM. This option enables the user
to verify that the data received by or sent from the ADM1067 is
correct. The PEC byte is an optional byte sent after the last data
byte has been written to or read from the ADM1067. The protocol
is the same as a block read for Step 1 to Step 12 and then proceeds
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
The master device asserts a start condition on SDA.
The master sends the 7-bit slave address followed by the
write bit (low).
The addressed slave device asserts an ACK on SDA.
The master sends a command code that tells the slave
device to expect a block read. The ADM1067 command
code for a block read is 0xFD (1111 1101).
The slave asserts an ACK on SDA.
The master asserts a repeat start condition on SDA.
The master sends the 7-bit slave address followed by the
read bit (high).
The slave asserts an ACK on SDA.
The ADM1067 sends a byte-count data byte that tells the
master how many data bytes to expect. The ADM1067
always returns 32 data bytes (0x20), which is the maximum
allowed by the SMBus Version 1.1 specification.
The master asserts an ACK on SDA.
as follows:
13. The ADM1067 issues a PEC byte to the master. The master
checks the PEC byte and issues another block read if the
PEC byte is incorrect.
14. A NACK is generated after the PEC byte to signal the end
of the read.
15. The master asserts a stop condition on SDA to end
the transaction.
Note that he PEC byte is calculated using CRC-8. The frame
check sequence (FCS) conforms to CRC-8 by the polynomial
C ( x ) = x 8 + x 2 + x 1 + 1
See the SMBus Version 1.1 specification for details.
An example of a block read with the optional PEC byte is shown
1 2 3 4 5 6 7 8 9 10 11 12
S W A COMMAND 0xFD A S
BYTE A DATA A
11.
The master receives 32 data bytes.
SLAVE
ADDRESS (BLOCK READ)
SLAVE
ADDRESS
R A
COUNT 1
12.
The master asserts an ACK on SDA after each data byte.
13.
The master asserts a stop condition on SDA to end the
13 14 15
1
transaction.
2 3
4
5 6
7
8
9
10
11
12
DATA
32
A PEC A P
S ADDRESS W A
A S ADDRESS R A COUNT A
SLAVE
COMMAND 0xFD
(BLOCK READ)
SLAVE BYTE
DATA
1
A
Figure 41. Block Read from the EEPROM or RAM with PEC
13
DATA
32
A
P
Figure 40. Block Read from the EEPROM or RAM
Rev. D | Page 30 of 32
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1067ACPZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:Super Sequencer with Open-Loop Margining DACs |
| ADM1067ASU | 功能描述:IC SUPERVISOR/SEQUENCER 48-TQFP RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:Super Sequencer® 其它有关文件:STM6717 View All Specifications 标准包装:1 系列:- 类型:多压监控器 监视电压数目:2 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 600 ms 电压 - 阀值:1.11V，3.075V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:Digi-Reel® 产品目录页面:1194 (CN2011-ZH PDF) 其它名称:497-7019-6 |
| ADM1067ASU-REEL | 制造商:Analog Devices 功能描述:Sequencer 48-Pin TQFP T/R |
| ADM1067ASU-REEL7 | 制造商:Analog Devices 功能描述:Sequencer 48-Pin TQFP T/R |
| ADM1067ASUZ | 制造商:Analog Devices 功能描述: |
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