參數(shù)資料
型號(hào): LTC1292
廠商: Linear Technology Corporation
英文描述: Single Chip 12-Bit Data Acquisition Systems(5V,單片,12位數(shù)據(jù)采集系統(tǒng)(內(nèi)置采樣和保持))
中文描述: 單芯片12位數(shù)據(jù)采集系統(tǒng)(5V的,單片,12位數(shù)據(jù)采集系統(tǒng)(內(nèi)置采樣和保持))
文件頁(yè)數(shù): 9/24頁(yè)
文件大?。?/td> 398K
代理商: LTC1292
9
LTC1292/LTC1297
LTC1292 Operating Sequence
U
S
A
O
PPLICATI
IU
U
Motorola SPI (MC68HC11)
The MC68HC11 has been chosen as an example of an MPU
with a dedicated serial port. This MPU transfers data MSB
first and in 8-bit increments. A dummy D
IN
word sent to the
data register starts the SPI process. With two 8-bit transfers,
the A/D result is read into the MPU (Figure 1). For the
LTC1292 the first 8-bit transfer clocks B11 through B8 of
the A/D conversion result into the processor. The second
8-bit transfer clocks the remaining bits B7 through B0 into
Microprocessor Interfaces
The LTC1292/LTC1297 can interface directly (without
external hardware) to most popular microprocessors’
(MPU) synchronous serial formats (see Table 1). If an
MPU without a dedicated serial port is used, then three of
the MPU’s parallel port lines can be programmed to form
the serial link to the LTC1292/LTC1297. Included here are
one serial interface example and one example showing a
parallel port programmed to form the serial interface.
Figure 1. Data Exchange Between LTC1292 and MC68HC11
CLK
t
CYC
CS
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
t
CONV
D
OUT
Hi-Z
t
SMPL
t
SMPL
LTC1292/7 AI01
LTC1297 Operating Sequence
CLK
CS
D
OUT
MPU
RECEIVED WORD
LTC1292/7 F01
B7
B6
B5
B4
B3
B2
B1
B0
B1
B8
B9
B10
B11
BYTE 2
B10
B9
B8
B11
O
1ST TRANSFER
2ND TRANSFER
BYTE 1
B2
B1
B0
B3
B4
B6
B7
B5
CLK
t
CYC
CS
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
t
CONV
D
OUT
Hi-Z
t
SMPL
LTC1292/7 AI02
t
suCS
POWER SHUTDOWN MODE
相關(guān)PDF資料
PDF描述
LTC1297 Single Chip 12-Bit Data Acquisition Systems(5V,單片,12位數(shù)據(jù)采集系統(tǒng)(內(nèi)置采樣和保持))
LTC1293 Single Chip 12-Bit Data Acquisition System(單片,12位數(shù)據(jù)采集系統(tǒng))
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