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Schematics, Layout, BOM, and LCD
Table 4-3. eZ430-Chronos-433 Wrist Module With White PCB, BOM List (continued)
Designator
Value
Tolerance
Footprint
Description
Manufacturer
R9
100k
±5%
402
Resistor SMD
MCU with ISM
U1
CC430F6137IRGC
QFN64
TI
Transceiver
U2
0433BM15A0001
Balun 433MHz
Johanson
U3
BMA250
LGA12
Acceleration Sensor SPI
Bosch Sensortec
U4
HKA5403Q-30
DIE
EL Driver
U5
BMP085
Pressure Sensor I2C
Bosch Sensortec
32.768kHz,
3.2 x
Y1
CL=12.5pF,
±20ppm
Crystal SMD
Microcrystal CM7V-T1A
1.5mm
2
ESR
≤
80k
Ω
3.2 x 2.5
26MHz, CL=10pF,
Y2
±10ppm
Crystal SMD
Epson TSX3225-X1E000021014300
ESR
≤
40
Ω
mm
2
80
eZ430-Chronos Hardware
SLAU292F – November 2009 – Revised October 2013
Copyright © 2009–2013, Texas Instruments Incorporated