LTC1288CN8 Linear Technology, LTC1288CN8 Datasheet - Page 21

• Manufacturer Part Number: LTC1288CN8
• Description: IC A/D CONV SAMPLING 12BIT 8-DIP
• Manufacturer: Linear Technology

Specifications of LTC1288CN8

• Number Of Bits: 12
• Sampling Rate (per Second): 6.6k
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 630µW
• Voltage Supply Source: Single Supply
• 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

LABEL MNEMONIC
LOOP
TYPICAL APPLICATIONS
TRANSMIT
RECEIVED
WORD
WORD
D
MPU
MPU
CLK
OUT
CS
D
IN
LDAA
STAA
LDAA
STAA
LDAA
STAA
LDAA
STAA
LDAA
STAA
LDX
BCLR
LDAA
STAA
LDAA
#62
#63
0
?
0
?
MSB
D OUT FROM LTC1298 STORED IN MC68HC11 RAM
B7
0
OPERAND
#$50
$1028
#$1B
$1009
#$01
$50
#$A0
$51
#$00
$52
#$1000
$08,X,#$01 D0 GOES LOW (CS GOES LOW)
$50
$102A
$1029
0
?
B6
0
0
?
BYTE 1
BYTE 1
B5
0
?
0
COMMENTS
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
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
CHECK SPI STATUS REG
LSB
0
?
B4
0
0
?
B11
B3
U
START
Hardware and Software Interface to the MC68HC11
1
?
Timing Diagram for Interface to the MC68HC11
B10
B2
N
SGL/
DIFF
B9
B1
SGL/
DIFF
?
ODD/
SIGN
ODD/
SIGN MSBF
B8
B0
?
MSBF
BYTE 1
BYTE 2
?
X
0
BYTE 2
BYTE 2
LABEL MNEMONIC
ANALOG
WAIT1 BPL
WAIT2 LDAA
WAIT3 LDAA
B11
B11
INPUTS
X
B10
B10
X
LDAA
STAA
BPL
LDAA
STAA
LDAA
STAA
BPL
BSET
LDAA
STAA
JMP
B9
B9
X
B8
B8
X
CH0
CH1
LTC1288
OPERAND
B7
WAIT1
$51
$102A
$1029
WAIT2
$102A
$62
$52
$102A
$1029
WAIT3
$08,X#$01
$102A
$63
LOOP
D
B7
X
CLK
OUT
D
CS
IN
DON'T CARE
LTC1285/LTC1288
B6
B6
X
B5
B5
COMMENTS
X
CHECK IF TRANSFER IS DONE
LOAD DIN INTO SPI, START SCK
CHECK IF TRANSFER IS DONE
LOAD LTC1288 MSBs INTO ACC A
FROM $52
LOAD DUMMY DIN INTO SPI,
START SCK
CHECK IF TRANSFER IS DONE
LOAD LTC1288 LSBs IN ACC
LOAD DIN INTO ACC A FROM $51
CHECK SPI STATUS REG
STORE MSBs IN $62
LOAD DUMMY INTO ACC A
CHECK SPI STATUS REG
DO GOES HIGH (CS GOES HIGH)
STORE LSBs IN $63
START NEXT CONVERSION
BYTE 3 (DUMMY)
B4
B4
X
BYTE 3
SCK
MISO
MOSI
D0
B3
B3
X
MC68HC11
LTC1285/88 • TA04
B2
B2
X
B1
B1
X
B0
B0
X
21
LTC1285/88 • TA03