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参数资料
| 型号： | ADM1066ASUZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 26/32页 |
| 文件大小： | 0K |
| 描述： | IC SEQUENCER/SUPERVISOR 48TQFP |
| 标准包装： | 500 |
| 系列： | Super Sequencer® |
| 类型： | 序列发生器 |
| 监视电压数目： | 12 |
| 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： | 48-TQFP |
| 供应商设备封装： | 48-TQFP（7x7） |
| 包装： | 带卷 (TR) |
| 配用： | EVAL-ADM1066TQEBZ-ND - BOARD EVALUATION FOR ADM1066TQ |
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页当前第26页第27页第28页第29页第30页第31页第32页
ADM1066
SMBus
POWER-UP
(V CC > 2.5V)
EEPROM
E
E
P
R
O
M
L
D
DEVICE
CONTROLLER
D
A
T
A
LATCH A
R
A
M
L
D
U
P
D
LATCH B
FUNCTION
(OV THRESHOLD
ON VP1)
Figure 35. Configuration Update Flow Diagram
UPDATING THE SEQUENCING ENGINE
Sequencing engine (SE) functions are not updated in the same
The major differences between the EEPROM and other
registers are as follows:
way as regular configuration latches. The SE has its own dedicated
512-byte nonvolatile, electrically erasable, programmable, read-
only memory (EEPROM) for storing state definitions, providing
63 individual states each with a 64-bit word (one state is reserved).
?
?
?
An EEPROM location must be blank before it can be
written to. If it contains data, the data must first be erased.
Writing to the EEPROM is slower than writing to the RAM.
Writing to the EEPROM should be restricted because it has
At power-up, the first state is loaded from the SE EEPROM into
the engine itself. When the conditions of this state are met, the
next state is loaded from the EEPROM into the engine, and so
on. The loading of each new state takes approximately 10 μs.
To alter a state, the required changes must be made directly to
the EEPROM. RAM for each state does not exist. The relevant
alterations must be made to the 64-bit word, which is then
uploaded directly to the EEPROM.
INTERNAL REGISTERS
The ADM1066 contains a large number of data registers. The
a limited write/cycle life of typically 10,000 write operations
due to the usual EEPROM wear-out mechanisms.
The first EEPROM is split into 16 (0 to 15) pages of 32 bytes
each. Page 0 to Page 6, starting at Address 0xF800, hold the
configuration data for the applications on the ADM1066 (such
as the SFDs and PDOs). These EEPROM addresses are the same
as the RAM register addresses, prefixed by F8. Page 7 is
reserved. Page 8 to Page 15 are for customer use.
Data can be downloaded from the EEPROM to the RAM in one
of the following ways:
principal registers are the address pointer register and the
configuration registers.
?
?
At power-up, when Page 0 to Page 6 are downloaded
By setting Bit 0 of the UDOWNLD register (0xD8), which
Address Pointer Register
The address pointer register contains the address that selects
one of the other internal registers. When writing to the ADM1066,
the first byte of data is always a register address that is written
to the address pointer register.
Configuration Registers
The configuration registers provide control and configuration
for various operating parameters of the ADM1066.
EEPROM
The ADM1066 has two 512-byte cells of nonvolatile EEPROM
from Register Address 0xF800 to Register Address 0xFBFF. The
EEPROM is used for permanent storage of data that is not lost
when the ADM1066 is powered down. One EEPROM cell contains
the configuration data of the device; the other contains the state
performs a user download of Page 0 to Page 6
SERIAL BUS INTERFACE
The ADM1066 is controlled via the serial system management
bus (SMBus) and is connected to this bus as a slave device under
the control of a master device. It takes approximately 1 ms after
power-up for the ADM1066 to download from its EEPROM.
Therefore, access to the ADM1066 is restricted until the
download is complete.
Identifying the ADM1066 on the SMBus
The ADM1066 has a 7-bit serial bus slave address (see Table 11).
The device is powered up with a default serial bus address. The
five MSBs of the address are set to 01101; the two LSBs are
determined by the logical states of Pin A1 and Pin A0. This
allows the connection of four ADM1066s to one SMBus.
definitions for the SE. Although referred to as read-only memory,
the EEPROM can be written to, as well as read from, using the
serial bus in exactly the same way as the other registers.
Table 11. Serial Bus Slave Address
A1 Pin A0 Pin Hex Address
Low Low 0x68
7-Bit Address
0110100x 1
Low
High
High
High
Low
High
0x6A
0x6C
0x6E
0110101x 1
0110110x 1
0110111x 1
1
x = Read/write bit. The address is shown only as the first 7 MSBs.
Rev. E | Page 26 of 32
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