CONTENTS
S1C33L26 TECHNICAL MANUAL
Seiko Epson Corporation
vii
18.4.4 Settings for UART Mode ................................................................................18-5
18.4.5 Settings for SPI Mode ....................................................................................18-5
18.4.6 Settings for I
C Mode .....................................................................................18-6
18.5.1 Data Transfer in UART Mode ..........................................................................18-7
18.5.2 Data Transfer in SPI Mode ..............................................................................18-8
18.5.3 Data Transfer in I
C Mode ..............................................................................18-10
18.6 Receive Errors..............................................................................................................18-19
18.7 USI Interrupts and DMA ...............................................................................................18-20
18.7.1 Interrupts in UART Mode ...............................................................................18-20
18.7.2 Interrupts in SPI Mode ...................................................................................18-21
18.7.3 Interrupts in I
C Master Mode ........................................................................18-22
C Slave Mode ..........................................................................18-22
USI Global Configuration Register (USI_GCFG) ..................................................................... 18-24
USI Transmit Data Buffer Register (USI_TD) .......................................................................... 18-24
USI Receive Data Buffer Register (USI_RD)........................................................................... 18-25
USI UART Mode Configuration Register (USI_UCFG) ............................................................ 18-25
USI UART Mode Interrupt Enable Register (USI_UIE) ............................................................ 18-26
USI UART Mode Interrupt Flag Register (USI_UIF) ................................................................ 18-26
USI SPI Master/Slave Mode Configuration Register (USI_SCFG) .......................................... 18-28
USI SPI Master/Slave Mode Interrupt Enable Register (USI_SIE) .......................................... 18-29
USI SPI Master/Slave Mode Interrupt Flag Register (USI_SIF) .............................................. 18-30
USI I
19.1 USIL Module Overview ................................................................................................19-1
19.2 USIL Pins ......................................................................................................................19-2
19.3 USIL Clock Sources ......................................................................................................19-3
19.4 USIL Module Settings ..................................................................................................19-5
19.4.1 USIL Module Software Reset ..........................................................................19-5
19.4.2 Interface Mode ................................................................................................19-5
19.4.3 General Settings for All Interface Modes ........................................................19-5
19.4.4 Settings for UART Mode ................................................................................19-5
19.4.5 Settings for SPI Mode ....................................................................................19-6
19.4.6 Settings for I
C Mode .....................................................................................19-7
19.4.7 Settings for LCD SPI Mode ............................................................................19-7
19.4.8 Settings for LCD Parallel Mode ......................................................................19-9
19.5.1 Data Transfer in UART Mode .........................................................................19-10
19.5.2 Data Transfer in SPI Mode .............................................................................19-11
19.5.3 Data Transfer in I
C Mode ..............................................................................19-13
19.5.4 Data Transmission in LCD SPI Mode .............................................................19-23
19.5.5 Data Transfer in LCD Parallel Mode ...............................................................19-24
19.6 Receive Errors..............................................................................................................19-27
19.7 USIL Interrupts and DMA .............................................................................................19-28