DSPIC30F2020-20E/MM Microchip Technology, DSPIC30F2020-20E/MM Datasheet - Page 20

• Manufacturer Part Number: DSPIC30F2020-20E/MM
• Description: 12KB, Flash, 512bytes-RAM, 30MIPS, 21I/O, 16-bit Family,nanoWatt 28 QFN-S 6x6mm
• Manufacturer: Microchip Technology
• Series: dsPIC™ 30Fr

Specifications of DSPIC30F2020-20E/MM

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 20 MIPS
• Connectivity: I²C, IrDA, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 21
• Program Memory Size: 12KB (4K x 24)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-QFN
• Package: 28QFN-S EP
• Device Core: dsPIC
• Family Name: dsPIC30
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 21
• Interface Type: I2C/SPI/UART
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM300023 - KIT DEMO DSPICDEM SMPS BUCKAC164322 - MODULE SOCKET MPLAB PM3 28/44QFNDV164005 - KIT ICD2 SIMPLE SUIT W/USB CABLE
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

dsPIC30F Family Reference Manual
35.3.4
35.3.5
DS70272B-page 35-20
SPI1 Receive-only Operation
SPI1 Error Handling
Setting the DISSDO control bit (SPI1CON1<11>) disables transmission at the SDO1 pin. This
allows the SPI1 module to be configured for a Receive-only mode of operation. The SDO1 pin
will be controlled by the respective port function if the DISSDO bit is set.
The DISSDO function is applicable to all SPI operating modes.
If a new data word has been shifted into SPI1SR but the previous SPI1BUF contents have not
been read, the SPIROV bit (SPI1STAT<6>) will be set. Any received data in SPI1SR will not be
transferred, and further data reception is disabled until the SPIROV bit is cleared. The SPIROV
bit is not cleared automatically by the module; it must be cleared by the user application.
The SPI1 Interrupt Flag, SPI1IF, is set whenever the SPIROV, SPIRBF (SPI1STAT<0>) or
SPITBF (SPI1STAT<1>) bits are set. The interrupt flag cannot be cleared by hardware and must
be reset in software. The actual SPI1 interrupt is generated only when the corresponding SPI1IE
bit is set in the IEC0 Control register.
© 2008 Microchip Technology Inc.