C903
1228-1147 rev. 1
APPENDIX
Components - N2410, N2411, N2420
A
PPE
N
D
IX
TQFN (4mm x 4mm)
TOP VIEW
MAX7327
19
20
21
22
1
2
3
4
5
6
18
17
16
15
14
13
23
24
12
11
10
9
8
7
SCL
V+
SDA
INT
AD2
O0
+
O1
P2
P3
P4
P5
AD0
O15
O13
O12
O11
RST
O10
O8
O9
GND
O6
O7
O14
EXPOSED PADDLE
Pin Configurations
Pin connection
(TOP VIEW)
DIRECTION OF THE
DETECTABLE
ACCELERATIONS
1
1
5
9
13
(BOTTOM VIEW)
Y
X
Z
Pin description
n
o
i
t
c
n
u
F
e
m
a
N
#
n
i
P
1
Vdd_IO
Power supply for I/O pins
2
NC
Not Connected
3
NC
Not Connected
4
SCL
SPC
I
2
C Serial Clock (SCL)
SPI Serial Port Clock (SPC)
5
GND
0V supply
6
SDA
SDI
SDO
I
2
C Serial Data (SDA)
SPI Serial Data Input (SDI)
3-wire Interface Serial Data Output (SDO)
7
SDO
SPI Serial Data Output
I
2
C less significant bit of the device address
8
CS
SPI enable
I
2
C/SPI mode selection (1: I
2
C mode; 0: SPI enabled)
9
INT 2
Inertial interrupt 2
10
Reserved
Connect to Gnd
11
INT 1
Inertial interrupt 1
12
GND
0V supply
13
GND
0V supply
14
Vdd
Power supply
15
Reserved
Connect to Vdd
16
GND
0V supply
Pin Diagram
ball A1 index area
A
F
E
D
C
B
5
4
3
2
1
6
ISP1508 TFBGA36 pinout (top view)
Pin Description
Symbol
1
Ball No
Type
2
Description
RREF
C2
AI/O
Resistor reference. Connect through 12k
: r
1% to GND.
DM
C1
AI/O
Connect to D- pin of the USB connector
x
USB mode: D- input/output
x
UART mode: TXD output
DP
D1
AI/O
Connect to D+ pin of the USB connector
x
USB mode: D+ input/output
x
UART mode: RXD input
FAULT
E2
I
Input for Vbus digital over-current or fault detector signal.
If this pin is not in use, connect it to GND
Plain input, 5V tolerant
ID
D3
I
identification (ID) pin of the mini-USB cable.
If this pin is not in use, leave this pin open(there’s internal pull-up).
Plain input, TTL
VBUS
F4
AI/O
Connect to V
BUS
pin of the USB connector.
VCC
F3
P
Input supply voltage or battery source. Nominally 3.0V to 4.5V.
Note: Below 3.0V, USB FS and LS transactions are not guaranteed to
work though some devices may work with ISP1508 at these voltages.
PSW_N
D4
OD
Controls an external, active low V
BUS
power switch or charge pump.
An external pull up resistor is required.
Open drain,output, 5V tolerant.
REG3V3
E3
P
3.3V regulator output for USB mode or 2.7V regulator output for UART
mode; requiring parallel 0.1 uF and 4.7 uF capacitors. Internally
powers ATX and other analog circuits. Should not be used to power
external circuits.
XTAL1
F5
AI/O
Crystal/clock input. 1.8V peak input allowed. Frequency depends on
status on CFG1 and CFG2 pins.
XTAL2
F6
AI/O
Crystal output. If crystal is not in use, leave this pin open
CHIP_SEL
C3
I
Active HIGH chip select input.
•
When this pin is none-active, ULPI pins will be in 3-state and the chip
1
Symbol names ending with underscore N (for example, NAME_N) indicate active low signals
2
I=input; O=output; I/O = Digital Input/Output; OD = Open Drain Output; AI/O = Analog Input/Output; P = Power or
Ground pin
N2420 IC IF 3.5X3.5X0.8 1200-1694
N2411 ASIC Accelerometer 1202-1676
N2410 IC IF 3.5x3.5x0.8 thin QFN 1200-1951
SEMC Troubleshooting Manual
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