参数资料
| 型号： | ADM1169ASTZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 30/36页 |
| 文件大小： | 0K |
| 描述： | IC SEQUENCER/SUPERVISOR 32LQFP |
| 标准包装： | 1 |
| 系列： | Super Sequencer® |
| 应用： | 电源监控器，序列发生器 |
| 输入电压： | 3 V ~ 14.4 V |
| 电源电压： | 3 V ~ 14.4 V |
| 电流 - 电源： | 4.2mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP（7x7） |
| 包装： | 托盘 |
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ADM1169
WRITE OPERATIONS
The SMBus specification defines several protocols for different
types of read and write operations. The following abbreviations
Data Sheet
As soon as the ADM1169 receives the command byte, page
erasure begins. The master device can send a stop command
as soon as it sends the command byte. Page erasure takes
?
?
?
?
?
?
S = Start
P = Stop
R = Read
W = Write
A = Acknowledge
A = No acknowledge
approximately 20 ms. If the ADM1169 is accessed before
erasure is complete, it responds with a no acknowledge
(NACK).
Write Byte/Word
In a write byte/word operation, the master device sends a command
byte and one or two data bytes to the slave device, as follows:
The ADM1169 uses the following SMBus write protocols.
Send Byte
1.
2.
The master device asserts a start condition on SDA.
The master sends the 7-bit slave address followed by the
write bit (low).
In a send byte operation, the master device sends a single
command byte to a slave device, as follows:
1. The master device asserts a start condition on SDA.
2. The master sends the 7-bit slave address followed by the
write bit (low).
3. The addressed slave device asserts an acknowledge (ACK)
on SDA.
4. The master sends a command code.
5. The slave asserts ACK on SDA.
3. The addressed slave device asserts an ACK on SDA.
4. The master sends a command code.
5. The slave asserts an ACK on SDA.
6. The master sends a data byte.
7. The slave asserts an ACK on SDA.
8. The master sends a data byte (or asserts a stop condition).
9. The slave asserts an ACK on SDA.
10. The master asserts a stop condition on SDA to end the
transaction.
6.
The master asserts a stop condition on SDA and the
transaction ends.
In the ADM1169 , the write byte/word protocol is used for the
following three purposes:
In the ADM1169 , the send byte protocol is used for the following
two purposes:
? To write a register address to the RAM for a subsequent
?
To write a single byte of data to the RAM. In this case, the
command byte is RAM Address 0x00 to RAM Address 0xDF,
S ADDRESS W A
single byte read from the same address, or for a block read
1 2 3
SLAVE
4
RAM
ADDRESS
(0x00 TO 0xDF)
5
A
6 7 8
DATA A P
1
2
3
4
5
6
S
SLAVE
ADDRESS
W
A
RAM
ADDRESS
(0x00 TO 0xDF)
A
P
?
Figure 41. Single Byte Write to the RAM
To set up a 2-byte EEPROM address for a subsequent read,
S
W A
A
A P
?
Figure 39. Setting a RAM Address for Subsequent Read
To erase a page of EEPROM memory. EEPROM memory
can be written to only if it is unprogrammed. Before writing
to one or more EEPROM memory locations that are already
programmed, the page(s) containing those locations must
first be erased. EEPROM memory is erased by writing a
command byte.
The master sends a command code telling the slave device to
erase the page. The ADM1169 command code for a page
erasure is 0xFE (1111 1110). Note that, for a page erasure
to take place, the page address must be given in the previous
write word transaction (see the Write Byte/Word section).
In addition, Bit 2 in the UPDCFG register (Address 0x90)
write, block read, block write, or page erasure. In this case,
the command byte is the high byte of EEPROM Address 0xF8
to EEPROM Address 0xFB. The only data byte is the low byte
1 2 3 4 5 6 7 8
EEPROM EEPROM
SLAVE ADDRESS ADDRESS
ADDRESS HIGH BYTE LOW BYTE
(0xF8 TO 0xFB) (0x00 TO 0xFF)
Figure 42. Setting an EEPROM Address
Because a page consists of 32 bytes, only the three MSBs of
the address low byte are important for page erasure. The
lower five bits of the EEPROM address low byte specify the
addresses within a page and are ignored during an erase
operation.
1
2
3
4
5
6
S
SLAVE
ADDRESS
W
A
COMMAND
BYTE
(0xFE)
A
P
Figure 40. EEPROM Page Erasure
Rev. A | Page 30 of 36
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1169ASTZ-RL7 | 功能描述:IC SEQUENCER/SUPERVISOR 32LQFP RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:Super Sequencer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| ADM1170 | 制造商:AD 制造商全称:Analog Devices 功能描述:1.6 V to 16.5 V Hot Swap Controller with Soft Start |
| ADM1170-1AUJZ-RL7 | 功能描述:IC CTRLR HOTSWAP 16.5V TSOT-23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| ADM1170-2AUJZ-RL7 | 功能描述:IC CTRLR HOTSWAP 16.5V TSOT-23-8 RoHS:是 类别:集成电路 (IC) >> PMIC - 热交换 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:119 系列:- 类型:热交换控制器 应用:通用型，PCI Express? 内部开关:无 电流限制:- 电源电压:3.3V，12V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:80-TQFP 供应商设备封装:80-TQFP（12x12） 包装:托盘 产品目录页面:1423 (CN2011-ZH PDF) |
| ADM1171 | 制造商:AD 制造商全称:Analog Devices 功能描述:2.7 V to 16.5 V Hot Swap Controller with Current Sense Output |
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