xr20m1280 Exar Corporation, xr20m1280 Datasheet - Page 53

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

REV. P1.1.1
F
F
IGURE
IGURE
22. I C-B
23. W
Protocol
SDA
SCL
2
RITE
GPIOn
SDA
US
T
T
O
T
SU;STA
T
BUF
O
IMING
condition
START
UTPUT
(S)
T
HD;STA
D
I2C/SPI UART WITH 128-BYTE FIFO AND INTEGRATED LEVEL SHIFTERS
IAGRAM
ADDRESS
SLAVE
T
T
LOW
R
MSB
Bit 7
(A7)
T
HIGH
W
T
T
SU;DAT
F
1/F
A
Bit 6
(A6)
PRELIMINARY
SCL
GPIOLVL REG.
T
53
HD;DAT
(R/W)
Bit 0
LSB
A
T
VD;DAT
Acknowledge
T
SP
DATA
(A)
T
VD;ACK
condition
T
A
STOP
D1
(P)
T
SU;STO
XR20M1280