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參數資料
型號: LM8300IVA9
廠商: National Semiconductor Corporation
英文描述: Four Wire Resistive Touchscreen Controller with Brownout
中文描述: 四線電阻式觸摸屏控制器掉電
文件頁數: 5/20頁
文件大?。?/td> 327K
代理商: LM8300IVA9
6.0 Pin Descriptions
Pinouts for 44- and 48-Pin Packages
Pin Name
RESET
DTR
WD_OUT
Direction
I
I
Pin Description
44-Pin LLP
6
7
8
44-Pin PLCC
1
2
3
48-Pin TSSOP
1
2
3
Reset pin, pull low to reset
UART data terminal ready signal
Watchdog output, tie to RESET pin
for correct function
Used to set if crystal is 3.3 MHz (low)
or 10 MHz (floating or pulled high)
O
CLK_SET
1
I
9
4
4
Unused
2
Unused
2
Unused
2
Unused
2
OSC_OUT
OSC_IN
Unused
2
Unused
2
UART_TX
10
11
12
13
14
15
16
17
18
5
6
7
8
9
10
11
12
13
5
6
7
8
9
10
11
12
13
O
I
Clock oscillator output
Clock oscillator input
O
UART transmit pin (inverted for use
with standard RS-232 drivers)
UART receive pin (inverted for use
with standard RS-232 drivers
Shutdown pin, puts the device in halt
mode if pulled low
UART_RX
I
19
14
14
SHUTDOWN
I
20
15
15
Unused
2
Unused
2
WAKE-UP
21
22
23
16
17
18
16
17
18
I
Used to wake up the processor from
halt mode with touch on touch screen
Drives the X+ wire, also analog input
when sampling
Drives the Y- wire, also analog input
when sampling
Drives the X- wire, also analog input
when sampling
Drives the Y+ wire, also analog input
when sampling
X+
I/O
24
19
19
Y-
I/O
25
20
20
X-
I/O
26
21
21
Y+
I/O
27
22
22
Unused
2
Unused
2
FILTER_OUT
FILTER_IN
GND
AGND
AV
CC
28
29
30
31
32
33
34
23
24
25
26
27
28
29
23
24
25
26
27
28
31
O
I
Analog output to the filter
Analog input from the filter
Digital ground
Analog ground
Analog power supply, connect to filter
for best performance
Digital power supply
V
CC
Unused
2
Unused
2
Unused
2
Unused
2
Unused
2
Unused
2
Unused
2
Unused
2
35
X
X
36
37
38
39
40
41
30
X
X
31
32
33
34
35
36
32
33
34
35
36
37
38
39
40
L
www.national.com
5
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LM8300 Four Wire Resistive Touchscreen Controller with Brownout
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