xr20m1280 Exar Corporation, xr20m1280 Datasheet - Page 2

• Manufacturer Part Number: xr20m1280
• Description: I2c/spi Uart With 128-byte Fifo And Integrated Level Shifters
• Manufacturer: Exar Corporation

XR20M1280
I2C/SPI UART WITH 128-BYTE FIFO AND INTEGRATED LEVEL SHIFTERS
F
ORDERING INFORMATION
IGURE
SLEEP/PWRDN#
XR20M1280IL24
XR20M1280IL32
XR20M1280IL40
P
ART
1. XR20M1280 B
I2C/SPI#
RESET#
EN485#
A0/CS#
XTAL1
XTAL2
ENIR#
A1/SI
N
IRQ#
SCK
SDA
UMBER
SO
VCC_BUS
Buffers
1.62V-
3.63V
LOCK
I/O
P
QFN-24
QFN-32
QFN-40
ACKAGE
D
IAGRAM
Interface
I
Bus
SPI
2
C/
N
PRELIMINARY
UMBER O
GPIO
16
4
8
S
F
2
UART
Regs
Fractional
BRG
Crystal Oscillator/
VCC_CORE
O
Flow Control
PERATING
128-Byte
128-Byte
RX FIFO
TX FIFO
Buffer
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
GPIOs
R
ANGE
T
EMPERATURE
RX
TX
VCC_UART
Buffers
Buffers
1.62V-
1.62V-
3.63V
3.63V
I/O
I/O
In Development
In Development
In Development
D
EVICE
S
REV. P1.1.1
TX
RX
RTS#
CTS#
GPIO[3:0]
GPIO[15:4]
VCC_GPIO
TATUS