User`s manual

V1.2 – May-11 User’s Manual Page 21 of 37
5.3 Layout A2100-B
12
13
14
15
16
17
18
19
20
21
22
11
10
9
8
7
6
5
4
3
2
1
GND GND GND
GND
GND GND GND
GND GND
1 nRST [IN – 1.8V]
2 BOOTSEL [IN – 1.8V]
3 N.C.
6 GND
7 GND
8 GPIO6 / SPI CLK [IN – 1.8V]
9 GPIO7 / SPI CS [IN – 1.8V]
10 N.C.
11 N.C.
4 WAKEUP [OUT – 1.8V]
5 Vcc 1.8V [PWRIN]
ANT [IN – RF] 12
ANT_GND 13
RX0 / SPI DI / I2C DIO [1.8V] 22
N.C. 14
TM_GPIO5 [OUT – 1.8V] 16
VANT [IN – 3.3 to 5VDC] 15
TX0 / SPI DO / I2C CLK [1.8V] 21
I2C CLK [OUT – 1.8V] 17
I2C DIO [IN/OUT – 1.8V] 18
ON_OFF [IN – 1.8V] 19
ExtInt [IN – 1.8V] 20
Bottom
12
13
14
15
16
17
18
19
20
21
22
12
13
14
15
16
17
18
19
20
21
22
11
10
9
8
7
6
5
4
3
2
1
11
10
9
8
7
6
5
4
3
2
1
GND GND GND
GND
GND GND GND
GND GND
GND GND GND
GND
GND GND GND
GND GND
1 nRST [IN – 1.8V]
2 BOOTSEL [IN – 1.8V]
3 N.C.
6 GND
7 GND
8 GPIO6 / SPI CLK [IN – 1.8V]
9 GPIO7 / SPI CS [IN – 1.8V]
10 N.C.
11 N.C.
4 WAKEUP [OUT – 1.8V]
5 Vcc 1.8V [PWRIN]
ANT [IN – RF] 12
ANT_GND 13
RX0 / SPI DI / I2C DIO [1.8V] 22
N.C. 14
TM_GPIO5 [OUT – 1.8V] 16
VANT [IN – 3.3 to 5VDC] 15
TX0 / SPI DO / I2C CLK [1.8V] 21
I2C CLK [OUT – 1.8V] 17
I2C DIO [IN/OUT – 1.8V] 18
ON_OFF [IN – 1.8V] 19
ExtInt [IN – 1.8V] 20
Bottom
“Pin 1” marker
Figure 10: Pin-out information (bottom view) A2100-B
Green Description: Host interface pins
Red Description: MEMS interface pins (Firmware405 just supports KXSD9)
Blue Description: Other
Center Ground pins are for shock / vibration resistance purpose.