LTC1291CCN8 Linear Technology, LTC1291CCN8 Datasheet - Page 11

• Manufacturer Part Number: LTC1291CCN8
• Description: IC DATA ACQ SYSTEM 12BIT 8-DIP
• Manufacturer: Linear Technology
• Type: Data Acquisition System (DAS)r

Specifications of LTC1291CCN8

• Resolution (bits): 12 b
• Data Interface: Serial, Parallel
• Voltage Supply Source: Single Supply
• Voltage - Supply: 5V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Sampling Rate (per Second): -

TRANSMIT
MC68HC11 CODE
In this example the D
a single-ended input to be applied to CH0. The conversion
result is output MSB-first.
LABEL MNEMONIC
A
RECEIVED
WORD
WORD
PPLICATI
D
MPU
MPU
CLK
OUT
D
CS
IN
LDAA
STAA
LDAA
STAA
LDAA
STAA
LDAA
STAA
0
?
0
?
O
0
?
OPERAND
#$50
$1028
#$1B
$1009
#$03
$50
#$60
$51
#62
#63
U
IN
0
?
BYTE 1
BYTE 1
S
word configures the input MUX for
MSB
D OUT FROM LTC1291 STORED IN MC68HC11 RAM
B7
0
0
?
I FOR ATIO
U
B6
0
CONFIGURATION DATA FOR SPCR
LOAD DATA INTO SPCR ($1028)
CONFIG. DATA FOR PORT D DDR
LOAD DATA INTO PORT D DDR
LOAD DIN WORD INTO ACC A
LOAD DIN DATA INTO $50
LOAD DIN WORD INTO ACC A
LOAD DIN DATA INTO $51
COMMENTS
?
0
B5
START
0
1
?
Hardware and Software Interface to Motorola MC68HC11
LSB
B4
0
SGL/
W
SGL/
DIFF
DIFF
?
Timing Diagram for Interface to the MC68HC11
B11
B3
ODD/
EVEN
B10
B2
EVEN MSBF
ODD/
?
B9
B1
U
MSBF
?
B8
B0
PS
PS
?
BYTE 1
BYTE 2
X
0
BYTE 2
BYTE 2
B11
B11
ANALOG
LABEL MNEMONIC
LOOP
INPUTS
X
B10
B10
X
LDAA
STAA
LDX
BCLR
LDAA
STAA
B9
B9
X
CH0
CH1
LTC1291
B8
B8
X
D
CLK
OUT
D
CS
B7
IN
OPERAND
#$00
$52
#$1000
$08,X,#$01 D0 GOES LOW (CS GOES LOW)
$50
$102A
B7
X
DON'T CARE
B6
B6
X
B5
B5
X
D0
SCK
MISO
MOSI
COMMENTS
LOAD DUMMY DIN WORD INTO
ACC A
LOAD DUMMY DIN DATA INTO $52
LOAD INDEX REGISTER X WITH
$1000
LOAD DIN INTO ACC A FROM $50
LOAD DIN INTO SPI, START SCK
BYTE 3 (DUMMY)
MC68HC11
B4
B4
X
BYTE 3
LTC1291 AI07
B3
B3
X
B2
B2
X
LTC1291
B1
B1
X
B0
B0
X
11
LTC1291 AI06
1291fa