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參數(shù)資料
| 型號(hào)： | LTC1090ACN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | Single Chip 10-Bit Data Acquisition System |
| 中文描述： | 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP20 |
| 封裝： | PLASTIC, DIP-20 |
| 文件頁數(shù)： | 15/28頁 |
| 文件大?。?/td> | 344K |
| 代理商： | LTC1090ACN |
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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
Motorola
MC6805S2, S3
MC68HC11
MC68HC05
RCA
CDP68HC05
Hitachi
HD6305
HD63705
HD6301
HD63701
HD6303
National Semiconductor
COP400 Family
COP800 Family
NS8050U
HPC16000 Family
Texas Instruments
TMS7002
TMS7042
TMS70C02
TMS70C42
TMS32011*
TMS32020*
*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.
TYPE OF INTERFACE
SPI
SPI
SPI
SPI
SCI Synchronous
SCI Synchronous
SCI Synchronous
SCI Synchronous
SCI Synchronous
MICROWIRE
MICROWIRE/PLUS
MICROWIRE/PLUS
MICROWIRE/PLUS
Serial Port
Serial Port
Serial Port
Serial Port
Serial Port
Serial Port
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
APPLICATIOU
W
U
U
MNEMONIC
DESCRIPTION
LEI
SC
OGI
LDD
XAS
LDD
NOP
XAS
XIS
NOP
XAS
XIS
RC
NOP
XAS
XIS
OGI
LEI
Enable SlO
Set Carry flag
G0 is set to (CS goes low)
Load first 4 bits of D
IN
to ACC
Swap ACC with SIO reg. Starts SK Clk
Load 2nd 4 bits of D
IN
to ACC
Timing
Swap first 4 bits from A/D with ACC. SK continues.
Put first 4 bits in RAM (location A)
Timing
Swap 2nd 4 bits from A/D with ACC. SK continues.
Put 2nd 4 bits in RAM (location A + 1)
Clear Carry
Timing
Swap 3rd 4 bits from A/D with ACC. SK off
Put 3rd 4 bits in RAM (location A + 2)
G0 is set to 1 (CS goes high)
Disable SlO
LTC1090
ANALOG
INPUTS
D
OUT
D
OUT
from LTC1090 stored in COP420 RAM
D
IN
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1090 | Single Chip 10-Bit Data Acquisition System |
| LTC1090AC | Single Chip 10-Bit Data Acquisition System |
| LTC1090ACJ | Single Chip 10-Bit Data Acquisition System |
| LTC1090AM | Single Chip 10-Bit Data Acquisition System |
| LTC1090AMJ | Quad Precision Single Supply Low-Power Operational Amplifier 14-SOIC -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1090ACN#PBF | 功能描述:IC DATA ACQUIS SYS 10BIT 20-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| LTC1090AM | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Single Chip 10-Bit Data Acquisition System |
| LTC1090AMJ | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Single Chip 10-Bit Data Acquisition System |
| LTC1090C | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Single Chip 10-Bit Data Acquisition System |
| LTC1090CJ | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Single Chip 10-Bit Data Acquisition System |
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