Advertisement
Universal port multiplexer (UPMUX)
The universal port multiplexer (UPMUX) allows software to select the peripheral circuit input/output
function to be assigned to each pin from those listed below.
Table 1.3.2.2 Peripheral Circuit Input/output Function Selectable by UPMUX
Peripheral
Signal
I2C
SCLn
SDAn
UART
USINn
USOUTn
SPI
SDIn
SDOn
SPICLKn
#SPISSn
PWM timer
TOUTn0/CAPn0
TOUTn1/CAPn1
TOUTn2/CAPn2
TOUTn3/CAPn3
Note: Do not assign a function to two or more pins simultaneously.
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
I/O
Ch.No.
I/O
n=0,1,2
I2C Ch.n clock input/output
I/O
I2C Ch.n data input/output
I
n=0,1,2
UART Ch,n data input
O
UART Ch,n data output
I
n=0,1,2
SPIA ch.n data input
O
SPIA ch.n data output
I/O
SPIA Ch.n clock input/output
I
SPIA Ch.n slave-select input
I/O
n=0,1
16-bit PWM timer Ch.n PWM output / capture input 0
I/O
16-bit PWM timer Ch.n PWM output / capture input 1
I/O
16-bit PWM timer Ch.n PWM output / capture input 2
I/O
16-bit PWM timer Ch.n PWM output / capture input 3
Seiko Epson Corporation
Function
1-13
Advertisement
