参数资料
| 型号： | LTC1090ACN |
| 厂商： | Linear Technology |
| 文件页数： | 7/28页 |
| 文件大小： | 0K |
| 描述： | IC DATA ACQUIS SYS 10BIT 20-DIP |
| 标准包装： | 18 |
| 类型： | 数据采集系统（DAS），ADC |
| 分辨率（位）： | 10 b |
| 采样率（每秒）： | 30k |
| 数据接口： | 串行 |
| 电压电源： | 单/双电源 |
| 电源电压： | ±5V，5V，10V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 20-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 20-PDIP |
| 包装： | 管件 |
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15
LTC1090
1090fc
serial formats (see Table 2). If an MPU without a serial
interface is used, then 4 of the MPU’s parallel port lines can
be programmed to form the serial link to the LTC1090.
Included here are three serial interface examples and one
example showing a parallel port programmed to form the
serial interface.
Table 2. Microprocessors with Hardware Serial Interfaces
Compatible with the LTC1090**
PART NUMBER
TYPE OF INTERFACE
Motorola
MC6805S2, S3
SPI
MC68HC11
SPI
MC68HC05
SPI
RCA
CDP68HC05
SPI
Hitachi
HD6305
SCI Synchronous
HD63705
SCI Synchronous
HD6301
SCI Synchronous
HD63701
SCI Synchronous
HD6303
SCI Synchronous
National Semiconductor
COP400 Family
MICROWIRE
COP800 Family
MICROWIRE/PLUS
NS8050U
MICROWIRE/PLUS
HPC16000 Family
MICROWIRE/PLUS
Texas Instruments
TMS7002
Serial Port
TMS7042
Serial Port
TMS70C02
Serial Port
TMS70C42
Serial Port
TMS32011*
Serial Port
TMS32020*
Serial Port
*Requires external hardware
**Contact LTC Marketing for interface information for processors not on
this list
MICROWIRE and MlCROWIRE/PLUS are trademarks of National
Semiconductor Corp.
Serial Port Microprocessors
Most synchronous serial formats contain a shift clock
(SCLK) and two data lines, one for transmitting and one for
receiving. In most cases data bits are transmitted on the
falling edge of the clock (SCLK) and captured on the rising
edge. However, serial port formats vary among MPU
manufacturers as to the smallest number of bits that can
be sent in one group (e.g., 4-bit, 8-bit or 16-bit transfers).
They also vary as to the order in which the bits are
transmitted (LSB or MSB first). The following examples
show how the LTC1090 accommodates these differences.
National MICROWIRE (COP420)
The COP420 transfers data MSB first and in 4-bit incre-
ments (nibbles). This is easily accommodated by setting
the LTC1090 to MSB first format and 12-bit word length.
The data output word is then received by the COP420 in
three 4-bit blocks with the final two unused bits filled with
zeroes by the LTC1090.
Hardware and Software Interface to National Semiconductor
COP420 Processor
APPLICATIO S I FOR ATIO
WU
UU
MNEMONIC
DESCRIPTION
LEI
Enable SlO
SC
Set Carry flag
OGI
G0 is set to (CS goes low)
LDD
Load first 4 bits of DIN to ACC
XAS
Swap ACC with SIO reg. Starts SK Clk
LDD
Load 2nd 4 bits of DIN to ACC
NOP
Timing
XAS
Swap first 4 bits from A/D with ACC. SK continues.
XIS
Put first 4 bits in RAM (location A)
NOP
Timing
XAS
Swap 2nd 4 bits from A/D with ACC. SK continues.
XIS
Put 2nd 4 bits in RAM (location A + 1)
RC
Clear Carry
NOP
Timing
XAS
Swap 3rd 4 bits from A/D with ACC. SK off
XIS
Put 3rd 4 bits in RAM (location A + 2)
OGI
G0 is set to 1 (CS goes high)
LEI
Disable SlO
LTC1090
ANALOG
INPUTS
DOUT
DOUT from LTC1090 stored in COP420 RAM
DIN
SCLK
GO
SK
SO
SI
COP420
CS
B9
Location A
Location A + 1
first 4 bits
second 4 bits
third 4 bits
LSB
MSB*
B8 B7 B6
B5 B4 B3 B2
Location A + 2
B1 B0 B0 B0
LTC1090 AI11
*B9 is MSB in unipolar or sign bit in bipolar
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1090ACN#PBF | 功能描述:IC DATA ACQUIS SYS 10BIT 20-DIP RoHS:是 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| LTC1090AM | 制造商:LINER 制造商全称:Linear Technology 功能描述:Single Chip 10-Bit Data Acquisition System |
| LTC1090AMJ | 制造商:LINER 制造商全称:Linear Technology 功能描述:Single Chip 10-Bit Data Acquisition System |
| LTC1090C | 制造商:LINER 制造商全称:Linear Technology 功能描述:Single Chip 10-Bit Data Acquisition System |
| LTC1090CJ | 制造商:LINER 制造商全称:Linear Technology 功能描述:Single Chip 10-Bit Data Acquisition System |
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