1
REV. 1.0.0
XR20M1280 EVALUATION BOARD USER’S MANUAL
INTRODUCTION
This user’s manual is for the XR20M1280 evaluation board. Table 1 shows the different devices and packages
that the evaluation board supports. This user’s manual will describe the hardware setup required to operate the
different packages.
1.0 HARDWARE SETUP
1.1
Packages description
The evaluation board supports all 3 packages of the XR20M1280. The ordering part number, package and
location on the board is shown below in Table 1. Table 2 lists the evaluation board ordering part numbers.
T
ABLE
1: P
ACKAGE
L
IST
O
RDERING
P
ART
N
UMBER
P
ACKAGE
L
OCATION
XR20M1280IL24-F
24-pin QFN
U8
XR20M1280IL32-F
32-pin QFN
U9
XR20M1280IL40-F
40-pin QFN
U11
T
ABLE
2: E
VALUATION
B
OARD
O
RDERING
P
ART
N
UMBERS
P
ART
N
UMBER
D
EFAULT
M
ODE
C
ONFIGURATION
XR20M1280L24-0A-EB
I
2
C
XR20M1280L24-0B-EB
SPI
XR20M1280L32-0A-EB
I
2
C
XR20M1280L32-0B-EB
SPI
XR20M1280L40-0A-EB
I
2
C
XR20M1280L40-0B-EB
SPI
1.2
Jumper Settings
1.2.1
XR20M1280IL24
The following jumpers apply to the XR20M1280IL24:
T
ABLE
3: J
UMPER
S
ETTINGS
F
OR
XR20M1280IL24
J
UMPERS
F
UNCTIONS
C
OMMENTS
J12
Selects the supply voltage for UART
modem I/Os including GPIO3-GPIO0
(VCC_UART)
Jumper in 1&2 selects 3.3V (default)
Jumper in 3&4 selects 2.5V
Jumper in 5&6 selects 1.8V
J13
Selects the supply voltage for UART core
logic (VCC_CORE)
Jumper in 1&2 selects 3.3V (default)
Jumper in 3&4 selects 2.5V
Jumper in 5&6 selects 1.8V
J14
Selects the supply voltage for CPU bus
interface (VCC_BUS)
Jumper in 1&2 selects 3.3V (default)
Jumper in 3&4 selects 2.5V
Jumper in 5&6 selects 1.8V
