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Seiko Epson Corporation
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
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
I/O
Ch.No.
Function
I2C
SCLn
I/O n=0,1,2
I2C Ch.n clock input/output
SDAn
I/O
I2C Ch.n data input/output
UART
USINn
I
n=0,1,2
UART Ch,n data input
USOUTn
O
UART Ch,n data output
SPI
SDIn
I
n=0,1,2
SPIA ch.n data input
SDOn
O
SPIA ch.n data output
SPICLKn
I/O
SPIA Ch.n clock input/output
#SPISSn
I
SPIA Ch.n slave-select input
PWM timer
TOUTn0/CAPn0
I/O n=0,1
16-bit PWM timer Ch.n PWM output / capture input 0
TOUTn1/CAPn1
I/O
16-bit PWM timer Ch.n PWM output / capture input 1
TOUTn2/CAPn2
I/O
16-bit PWM timer Ch.n PWM output / capture input 2
TOUTn3/CAPn3
I/O
16-bit PWM timer Ch.n PWM output / capture input 3
Note
: Do not assign a function to two or more pins simultaneously.
Summary of Contents for S1C31D50
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