- 您现在的位置：买卖IC网 > PDF目录1916 > DS4550E+ (Maxim Integrated Products)IC I/O EXPANDER I2C 9B 20TSSOP PDF资料下载
参数资料
| 型号： | DS4550E+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/18页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 9B 20TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 74 |
| 接口： | I²C，JTAG |
| 输入/输出数： | 9 |
| 中断输出： | 无 |
| 频率 - 时钟： | 400kHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 管件 |
| 包括： | EEPROM |
DS4550
I2C and JTAG Nonvolatile 9-Bit I/O
Expander Plus Memory
14
____________________________________________________________________
Table 5. EEPROM Write Cycle
STEP
TAP STATE
COMMENTS
Select-IR-Scan
Capture-IR
Shift-IR (4 x TCK)
The 4-bit instruction is shifted in through TDI.
Exit1-IR
Select
Address
Register
Update-IR
Select-DR-Scan
Capture-DR
No-op.
Shift-DR (8 x TCK)
The 8-bit address is shifted in through TDI.
Exit1-DR
Load
EEPROM
Address
Update-DR
The shifted 8-bit Address Register data is output latched.
Select-IR-Scan
Capture-IR
Shift-IR (4 x TCK)
The 4-bit instruction is shifted in through TDI.
Exit1-IR
Select
Write
Register
Update-IR
Select-DR-Scan
Capture-DR
No-op.
Shift-DR (8 x TCK)
The 8-bit data is shifted in through TDI.
Exit1-DR
Write
EEPROM
Data
Update-DR
The shifted 8-bit EEPROM Write Register data is output latched and written to the
EEPROM.
I2C Serial Interface Description
I2C Definitions
The following terminology is commonly used to
describe I2C data transfers.
Master Device: The master device controls the slave
devices on the bus. The master device generates SCL
clock pulses, start and stop conditions.
Slave Devices: Slave devices send and receive data
at the master’s request.
Bus Idle or Not Busy: Time between stop and start
conditions when both SDA and SCL are inactive and in
their logic high states. When the bus is idle it often initi-
ates a low-power mode for slave devices.
Start Condition: A start condition is generated by the
master to initiate a new data transfer with a slave.
Transitioning SDA from high to low while SCL remains
high generates a start condition. See the timing dia-
gram for applicable timing.
Stop Condition: A stop condition is generated by the
master to end a data transfer with a slave. Transitioning
SDA from low to high while SCL remains high gener-
ates a stop condition. See the timing diagram for
applicable timing.
Repeated Start Condition: The master can use a
repeated start condition at the end of one data transfer to
indicate that it will immediately initiate a new data trans-
fer following the current one. Repeated starts are com-
monly used during read operations to identify a specific
memory address to begin a data transfer. A repeated
start condition is issued identically to a normal start con-
dition. See the timing diagram for applicable timing.
Bit Write: Transitions of SDA must occur during the low
state of SCL. The data on SDA must remain valid and
unchanged during the entire high pulse of SCL plus the
setup and hold-time requirements (see Figure 5). Data is
shifted into the device during the rising edge of the SCL.
相关PDF资料 |
PDF描述 |
|---|---|
| DS4830T+ | MCU 16B CTRL CALIBR MON 40-TQFN |
| DS5000FP-16 | IC MODULE MICRO 16MHZ FLATPACK |
| DS5000T-32-16+ | IC MPU W/RTC 32KB 16MHZ 40-DIP |
| DS5001FP-16N | IC MPU 128K 16MHZ IND 80-TQFP |
| DS5002FMN-16 | IC MPU SECURE 16MHZ IND 80-TQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS4550E+ | 功能描述:接口-I/O扩展器 9-Bit I2C/JTAG NV GPIO RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| DS4550E+T&R | 制造商:Maxim Integrated Products 功能描述:I2C AND JTAG NONVOLATILE 9-BIT I/O 20TSSOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC I/O EXPANDER I2C 9B 20TSSOP |
| DS4550E+T&R | 功能描述:接口-I/O扩展器 9-Bit I2C/JTAG NV GPIO RoHS:否 制造商:NXP Semiconductors 逻辑系列: 输入/输出端数量: 最大工作频率:100 kHz 工作电源电压:1.65 V to 5.5 V 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:HVQFN-16 封装:Reel |
| DS456 | 制造商:Miyama Electric 功能描述: |
| DS4560 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:12V Hot-Plug Switch |
发布紧急采购，3分钟左右您将得到回复。