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W90N745CD Datasheet, PDF (8/422 Pages) Winbond – 16/32-bit ARM microcontroller | |||
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W90N745CD/W90N745CDG
DMA Controller
⢠2-channel general DMA for memory-to-memory data transfers without CPU intervention
⢠Initialed by a software or external DMA request
⢠Increments or decrements a source or destination address in 8-bit, 16-bit or 32-bit data transfers
⢠4-data burst mode
UART
⢠Four UART (serial I/O) blocks with interrupt-based operation
⢠Support for 5-bit, 6-bit, 7-bit or 8-bit serial data transmit and receive
⢠Programmable baud rates
⢠1, ½ or 2 stop bits
⢠Odd or even parity
⢠Break generation and detection
⢠Parity, overrun and framing error detection
⢠X16 clock mode
⢠UART1 supports Bluetooth, and UART2 supports IrDA1.0 SIR
Timers
⢠Two programmable 24-bit timers with 8-bit pre-scaler
⢠One programmable 20 bit with selectable additional 8-bit prescaler watchdog timer
⢠One-shot mode, periodical mode or toggle mode operation
Programmable I/Os
⢠31 programmable I/O ports
⢠Pins individually configurable to input, output or I/O mode for dedicated signals
⢠I/O ports are configurable for multiple functions
Advanced Interrupt Controller
⢠24 interrupt sources, including 4 external interrupt sources
⢠Programmable normal or fast interrupt mode (IRQ, FIQ)
⢠Programmable as either edge-triggered or level-sensitive for 4 external interrupt sources
⢠Programmable as either low-active or high-active for 4 external interrupt sources
⢠Priority methodology is encoded to allow for interrupt daisy-chaining
⢠Automatically mask out the lower priority interrupt during interrupt nesting
Publication Release Date: September 22, 2006
-3-
Revision A2
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