xr20m1280 Exar Corporation, xr20m1280 Datasheet - Page 3

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

REV. P1.1.1
F
IGURE
VCC_BUS
VCC_BUS
2. P
IN
I2C/SPI#
RESET#
O
ENIR#
IRQ#
UT
I2C/SPI#
SDA
SCL
NC
NC
A1
A0
VCC_BUS
ENIR#
IRQ#
SDA
A
SCL
NC
A1
A0
10
SSIGNMENTS
1
2
3
4
5
6
7
8
9
IRQ#
SDA
SCL
NC
A1
A0
1
2
3
4
5
6
7
8
1
2
3
4
5
6
XR20M1280IL40
XR20M1280IL32
XR20M1280
I
2
I
I
I2C/SPI UART WITH 128-BYTE FIFO AND INTEGRATED LEVEL SHIFTERS
2
C Mode
2
C Mode
C Mode
IL24
18
17
16
15
14
13
24
23
22
21
20
19
18
17
CD#/GPIO2
RI#/GPIO3
VCC_UART
RTS#
RX
TX
30
29
28
27
26
25
24
23
22
21
DSR#/GPIO1
CD#/GPIO2
RI#/GPIO3
VCC_UART
GPIO4
GPIO5
GPIO6
GPIO7
RI#/GPIO3
GND
VCC_UART
GPIO15
GPIO14
GPIO13
GPIO4
GPIO5
GPIO6
GPIO7
PRELIMINARY
3
GND
GND
I2C/SPI#
RESET#
ENIR#
IRQ#
I2C/SPI#
SCL
CS#
SO
NC
NC
ENIR#
SI
IRQ#
SCL
CS#
SO
NC
10
SI
1
2
3
4
5
6
7
8
9
IRQ#
GND
SCL
CS#
SO
NC
SI
1
2
3
4
5
6
7
8
1
2
3
4
5
6
XR20M1280IL40
XR20M1280IL32
XR20M1280
SPI Mode
SPI Mode
SPI Mode
IL24
18
17
16
15
14
13
XR20M1280
24
23
22
21
20
19
18
17
CD#/GPIO2
RI#/GPIO3
VCC_UART
RTS#
RX
TX
30
29
28
27
26
25
24
23
22
21
DSR#/GPIO1
CD#/GPIO2
RI#/GPIO3
VCC_UART
GPIO4
GPIO5
GPIO6
GPIO7
RI#/GPIO3
GND
VCC_UART
GPIO15
GPIO14
GPIO13
GPIO4
GPIO5
GPIO6
GPIO7