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参数资料
| 型号： | DS4520E+TRL |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/10页 |
| 文件大小： | 0K |
| 描述： | IC I/O EXPANDER I2C 9B 16TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1,000 |
| 接口： | I²C |
| 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： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 带卷 (TR) |
| 包括： | EEPROM |
DS4520
9-Bit I2C Nonvolatile
I/O Expander Plus Memory
_____________________________________________________________________
7
*THE SLAVE ADDRESS IS DETERMINED BY
ADDRESS PINS A0, A1, AND A2.
1
MSB
SLAVE
ADDRESS*
READ/WRITE
BIT
LSB
01
0
A2
A1
A0
R/W
Figure 1. DS4520 Slave Address Byte
Table 1. DS4520 Memory Map
ADDRESS
TYPE
NAME
FUNCTION
FACTORY
DEFAULT
00h to 3Fh
EEPROM
User Memory 64 bytes of general-purpose user EEPROM.
00h
40 to E7h
—
Reserved
Undefined address space for future expansion. Reads and writes to this
space have no effect on the device.
—
E8 to EFh
EEPROM
Reserved
—
F0h
Pullup
Enable 0
Pullup enable for I/O_0 to I/O_7. I/O_0 is the LSB and I/O_7 is the MSB. Set
the corresponding bit to enable the pullup; clear the bit to disable the pullup.
00h
F1h
Pullup
Enable 1
Pullup enable for I/O_8. I/O_8 is the LSB. Only the LSB is used. Set the LSB
bit to enable the pullup on I/O_8; clear the LSB to disable the pullup.
00h
F2h
I/O Control 0
I/O control for I/O_0 to I/O_7. I/O_0 is the LSB and I/O_7 is the MSB. Clearing
the corresponding bit of the register pulls the selected I/O pin low; setting the
bit places the pulldown transistor into a high-impedance state. When the
pulldown is high impedance, the output floats if no pullup/down is connected
to the pin.
FFh
F3h
I/O Control 1
I/O control for I/O_8. I/O_8 is the LSB. Only the LSB is used. Clearing the LSB
of the register pulls the I/O_8 pin low; setting the LSB places the pulldown
transistor into a high-impedance state. When the pulldown is high impedance,
the output floats if no pullup/down is connected to the pin.
01h
F4h
Configuration
Configuration register. The LSB is the SEE bit. When set, this bit disables
writes to the EEPROM; writing only affects the shadow SRAM. When set to 0,
both the EEPROM and the shadow SRAM is written.
00h
F5h to F7h
SRAM
Shadowed
EEPROM
[EEPROM
writes are
disabled if
the SEE
bit = 1]
User Memory 3 bytes of general-purpose user EEPROM.
00h
F8h
I/O Status 0
I/O status for I/O_0 to I/O_7. I/O_0 is the LSB and I/O_7 is the MSB. Writing to
this register has no effect. Read this register to determine the state of the
I/O_0 to I/O_7 pins.
F9h
I/O Status 1
I/O status for I/O_8. I/O_8 is the LSB. Only the LSB is used; the other bits
could be any value when read. Writing to this register has no effect. Read this
register to determine the state of the I/O_8 pin.
FAh to FFh
SRAM
SRAM User
6 bytes of general-purpose SRAM.
—
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相关代理商/技术参数 |
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| DS4520E-W | 功能描述:接口-I/O扩展器 9-Bit I2C NV I/O Expander Plus Memory 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 |
| DS4520F+TRL | 制造商:Maxim Integrated Products 功能描述: |
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| DS4521FP000 | 制造商:Thomas & Betts 功能描述:400A,CON,4P5W,MG,521,3PY250V |
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