DSPIC30F4012 Microchip Technology Inc., DSPIC30F4012 Datasheet - Page 117

• Manufacturer Part Number: DSPIC30F4012
• Description: Dspic30f4011/4012 Enhanced Flash 16-bit Digital Signal Controller
• Manufacturer: Microchip Technology Inc.

18.0
This section describes the Universal Asynchronous
Receiver/Transmitter communications module.
FIGURE 18-1:
© 2007 Microchip Technology Inc.
Note: This data sheet summarizes features of this group
of dsPIC30F devices and is not intended to be a complete
reference source. For more information on the CPU,
peripherals, register descriptions and general device
functionality, refer to the dsPIC30F Family Reference
Manual (DS70046). For more information on the device
instruction set and programming, refer to the “dsPIC30F/
33F Programmer’s Reference Manual” (DS70157).
Note: x = 1 or 2. dsPIC30F4012 only has UART1.
UxTX
UNIVERSAL ASYNCHRONOUS
RECEIVER TRANSMITTER
(UART) MODULE
UART TRANSMITTER BLOCK DIAGRAM
Internal Data Bus
UTXBRK
Data
Parity
‘0’ (Start)
‘1’ (Stop)
Generator
Parity
Write
UTX8
Transmit Shift Register (UxTSR)
UxTXREG Low Byte
18.1
The key features of the UART module are:
• Full-Duplex, 8 or 9-bit Data Communication
• Even, Odd or No Parity Options (for 8-bit data)
• One or Two Stop bits
• Fully Integrated Baud Rate Generator with
• Baud Rates ranging from 38 bps to 1.875 Mbps at
• 4-Word Deep Transmit Data Buffer
• 4-Word Deep Receive Data Buffer
• Parity, Framing and Buffer Overrun Error Detection
• Support for Interrupt Only on Address Detect
• Separate Transmit and Receive Interrupts
• Loopback mode for Diagnostic Support
16-bit Prescaler
a 30 MHz Instruction Rate
(9th bit = 1)
dsPIC30F4011/4012
Load TSR
UART Module Overview
16 Divider
Write
Control
Signals
Control and Status bits
– Control TSR
– Control Buffer
– Generate Flags
– Generate Interrupt
Transmit Control
16x Baud Clock
from Baud Rate
Generator
DS70135E-page 115
UxTXIF