E-L6452 查看數據表（PDF） - STMicroelectronics
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E-L6452 Datasheet PDF : 22 Pages
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L6452
Print Head Temperature Control Part
Figure 5. Print Head Block Diagram
Va
VREF OUT
REXT
ONENABLE
REF
VOLT
VREF
HIGH-SIDE
CONSTANT
CURRENT Vx
SOURCE
SW1
SW2
SW3
A1
g1
VREF/2
VOFFSET
+
A2
+
CH0
g2
-
VREF
D/A 5 BIT
VREF
A
D
A
B
D
C
CONVSTART
ADCK
ADDATA
CH5
CH4
CH3
CH2
CH1
A/D
INPUTS
CH0BUF
RXA, RXB
LATCH 10 BIT
SHIFT REG. 10 BIT
A/B ON/OFF DA4 DA3 DA2 DA1 DA0 ADDR2 ADDR1 ADDR0
CRLATCH
CRCLOCK
CRDATA
CONTROL
REGISTER
VXA, VXB
ANALOG GND
RALU A
RALU B
Note; the analog ground is separated from the digital ground of the remaining part of the driver
Figure 6. Control Register details.
SHIFT DIRECTION
CR9 CR8 CR7 CR6 CR5 CR4 CR3 CR2 CR1 CR0
A/B ON/OFF DA4 DA3 DA2 DA1 DA0 ADDR2 ADDR1 ADDR0
D97IN533C
SELECTION OF RESISTOR A
(A/B = 0) or B
(A/B = 0) for
TEMPERATURE MEASUREMENT
D/A INPUTS FOR OFFSET
COMPENSATION
DA0 = LSB
DA4 = MSB
POSITIVE LOGIC
CHANNEL SELECTION
A/D INPUT
D97IN534B
ONE INTERNAL CHANNEL
(VX MEASUREMENT)
FIVE UNCOMMITTED, GENRAL-PURPOSE
EXTERNAL CHANNELS
SWITCHES THE CURRENT SOURCE ON or OFF;
LINKED WITH ONENABLE INPUT PIN
ON/OFF
0
1
0
1
ONENABLE
1
1
0
0
ACTION
OFF
OFF
OFF
ON
ADDR2 ADDR1 ADDR0 CHANNEL ADDRESS
0
0
0
0 (INTERNAL)
0
0
1
1 (EXTERNAL)
0
1
0
2 (EXTERNAL)
0
1
1
3 (EXTERNAL)
1
0
0
4 (EXTERNAL)
1
0
1
5 (EXTERNAL)
1
1
0
6
1
1
1
7
CH0BUF
A
B
B
B
B
B
C
D
15/22
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