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参数资料
| 型号： | ADM1069ACPZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 29/32页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR/SEQ PROG 40LFCSP |
| 标准包装： | 2,500 |
| 系列： | Super Sequencer® |
| 类型： | 序列发生器 |
| 监视电压数目： | 8 |
| 输出： | 可编程 |
| 电压 - 阀值： | 8 种可选阀值组合 |
| 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： | 带卷 (TR) |
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ADM1069
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:
Block Write
In a block write operation, the master device writes a block of
data to a slave device. The start address for a block write must
have been set previously. In the ADM1069, a send byte opera-
1.
2.
The master device asserts a start condition on SDA.
The master sends the 7-bit slave address followed by the
tion sets a RAM address, and a write byte/word operation sets
an EEPROM address, as follows:
write bit (low).
1.
The master device asserts a start condition on SDA.
3.
4.
5.
6.
7.
8.
9.
The addressed slave device asserts an ACK on SDA.
The master sends a command code.
The slave asserts an ACK on SDA.
The master sends a data byte.
The slave asserts an ACK on SDA.
The master sends a data byte (or asserts a stop condition).
The slave asserts an ACK on SDA.
2.
3.
4.
5.
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 write. The ADM1069 command
code for a block write is 0xFC (1111 1100).
The slave asserts an ACK on SDA.
10. The master asserts a stop condition on SDA to end the
transaction.
In the ADM1069, the write byte/word protocol is used for the
following three purposes:
? To write a single byte of data to the RAM. In this case, the
6.
7.
8.
9.
The master sends a data byte that tells the slave device how
many data bytes are being sent. The SMBus specification
allows a maximum of 32 data bytes in a block write.
The slave asserts an ACK on SDA.
The master sends N data bytes.
The slave asserts an ACK on SDA after each data byte.
command byte is RAM Address 0x00 to RAM Address 0xDF,
10. The master asserts a stop condition on SDA to end the
transaction.
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6
7 8
1
2
3
4
5
6
7
8
9
10
S ADDRESS W A (BLOCK WRITE) A COUNT A
S
SLAVE
ADDRESS
W A
RAM
ADDRESS
(0x00 TO 0xDF)
A DATA A P
SLAVE COMMAND 0xFC BYTE
DATA
1
A
DATA
2
A
DATA
N
A P
Figure 41. Single Byte Write to the RAM
Figure 44. Block Write to the EEPROM or RAM
?
To set up a 2-byte EEPROM address for a subsequent read,
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
Unlike some EEPROM devices that limit block writes to within
a page boundary, there is no limitation on the start address
when performing a block write to EEPROM, except when
? There are fewer than N locations from the start address to
1
2
3
4
5
6
7 8
the highest EEPROM address (0xFBFF), which results in
S W A
SLAVE
ADDRESS
EEPROM
ADDRESS
HIGH BYTE
(0xF8 TO 0xFB)
A
EEPROM
ADDRESS
LOW BYTE
(0x00 TO 0xFF)
A P
?
writing to invalid addresses.
An address crosses a page boundary. In this case, both
pages must be erased before programming.
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.
To write a single byte of data to the EEPROM. In this case, the
command byte is the high byte of EEPROM Address 0xF8
to EEPROM Address 0xFB. The first data byte is the low
byte of the EEPROM address, and the second data byte is
Note that the ADM1069 features a clock extend function for
writes to EEPROM. Programming an EEPROM byte takes
approximately 250 μs, which limits the SMBus clock for
repeated or block write operations. The ADM1069 pulls SCL
low and extends the clock pulse when it cannot accept any
more data.
1
2
3
4
5
6
7
8
9 10
S W A
SLAVE
ADDRESS
EEPROM
ADDRESS
HIGH BYTE
(0xF8 TO 0xFB)
A
EEPROM
ADDRESS
LOW BYTE
(0x00 TO 0xFF)
A DATA A P
Figure 43. Single Byte Write to the EEPROM
Rev. C | Page 29 of 32
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相关代理商/技术参数 |
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| ADM1069ACPZ-REEL7 | 功能描述:IC SUPERVISOR/SEQ PROG 40LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:Super Sequencer® 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP（0.059"，1.50mm 宽）5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT |
| ADM1069ARTZ | 制造商:Analog Devices 功能描述:SUPER SEQUENCER - Tape and Reel |
| ADM1069AST | 制造商:Analog Devices 功能描述:Volt Supervisor Sequencer 2.7V to 5.4V 32-Pin LQFP |
| ADM1069AST-REEL | 制造商:Analog Devices 功能描述:Volt Supervisor Sequencer 2.7V to 5.4V 32-Pin LQFP T/R |
| ADM1069AST-REEL7 | 制造商:Analog Devices 功能描述:Volt Supervisor Sequencer 2.7V to 5.4V 32-Pin LQFP T/R |
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