ZBA Inc. BT44-291S ユーザーズマニュアル
BT44-291S
Page 3 of 18
5. Pin Descriptions
5.1
Device Terminal
No. Des
Des No.
GND
47
1 GND
Pio10 46
2 Pio11
Pio9 45
3 Aio1
Pio8 44
4 Aio0
Pio0 43
5 Aio2
Pio1 42
6 RST
Pio2 41
7 MISO
Pio3 40
8 CSB
Pio4 39
9 SCLK
Pio5 38
10 MOSI
Pio6 37
11 CTS
Pio7 36
12 TX
UD+ 35
13 RTS
UD- 34
14 RX
D0 33
15 Vref
D1 32
16 VCC
D2 31
17 GND
D3 30
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4
18 19 20 21 22 23 24 25 26 27 28 29
5.2
Device Terminal Functions
USB and UART
PIN
TYPE
DESCRIPTION
UD+ 35
Bi-directional
USB data plus with selectable internal
1.5kΩ pull-up resistor
UD-
34
Bi-directional
USB data minus
CTS
11
CMOS input with weak
internal pull-down
UART clear to send active low
TX 12
CMOS
output,
tri-state, with weak
internal pull-up
UART data output
RTS
13
CMOS output, tri-state, with weak
internal pull-up
UART request to send active low
RX
14
CMOS input with weak internal
pull-down
UART data input