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参数资料
| 型号： | DS4550E+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/18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
_____________________________________________________________________
7
I2C
INTERFACE
VCC
SDA
SCL
A0
A1
A2
TMS
TDI
TDO
TCK
GND
DS4550
BSC
EEPROM
64 BYTES
USER
MEMORY
I/O CONTROL
REGISTERS
PULLUP ENABLE (F0h-F1h)
I/O CONTROL (F2h-F3h)
I/O STATUS (F8h-F9h)
BOUNDARY SCAN CELL (BSC)
JTAG
CONTROL
PORT
VCC
I/O CELL
(x9)
RPU
I/O_n
[n = 0 TO 8]
VCC
RJPU
BSC
Block Diagram
Detailed Description
The DS4550 contains nine bidirectional, NV, input/out-
put (I/O) pins, and a 64-byte EEPROM user memory.
The I/O pins and user memory are accessible through
either the I2C compatible serial bus or the IEEE 1149.1
JTAG interface.
Programmable NV I/O Pins
Each programmable I/O pin consists of an input and an
open-collector output with a selectable internal pullup
resistor. To enable the pullups for each I/O pin, write to
the Pullup Enable Registers (F0h and F1h). To pull the
output low or place the pulldown transistor into a high-
impedance state, write to the I/O Control Registers (F2h
and F3h). To read the voltage levels present on the I/O
pins, read the I/O Status Registers (F8h and F9h). To
determine the status of the output register, read the I/O
Control Registers and the Pullup Resistor Registers.
The I/O Control Registers and the Pullup Enable
Registers are all SRAM-shadowed EEPROM registers.
It is possible to disable the EEPROM writes of the regis-
ters using the SEE bit in the Configuration Register.
This reduces the time required to write to the register
and increases the amount of times the I/O pins can be
adjusted before the EEPROM is worn out.
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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 |
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