sc16c850iet NXP Semiconductors, sc16c850iet Datasheet - Page 45

• Manufacturer Part Number: sc16c850iet
• Description: Sc16c850 2.5 V To 3.3 V Uart, 5 Mbit/s Max. With 128-byte Fifos, Infrared Irda , And 16 Mode Or 68 Mode Parallel Bus Interface
• Manufacturer: NXP Semiconductors

NXP Semiconductors
SC16C850_1
Product data sheet
Fig 19. Transmit timing in 16 mode
Fig 20. Transmit timing in 68 mode
(1) INT is active when TX FIFO is empty or TX FIFO drops below trigger level.
(2) INT is cleared when ISR is read or TX FIFO fills up to trigger level.
(1) IRQ is active when TX FIFO is empty or TX FIFO drops below trigger level.
(2) IRQ is cleared when ISR is read or TX FIFO fills up to trigger level.
CS (write)
INT
IRQ
(1)(2)
IOW
(1)(2)
TX
TX
t
d(CS-TX)W
active
active
start
start
t
bit
d(start-IRQL)
bit
t
d(IOW-TX)
t
d(start-INT)
D0
D0
2.5 V to 3.3 V UART with 128-byte FIFOs and IrDA encoder/decoder
Rev. 01 — 10 January 2008
D1
D1
5 data bits
6 data bits
7 data bits
5 data bits
6 data bits
7 data bits
D2
D2
transmitter ready
16 baud rate clock
data bits (0 to 7)
data bits (0 to 7)
16 baud rate clock
active
D3
D3
D4
D4
D5
D5
TX ready
active
D6
D6
D7
D7
parity
parity
bit
bit
t
stop
d(CS-IRQH)W
bit
stop
t
d(IOW-INTL)
bit
SC16C850
next data
next data
start
start
bit
© NXP B.V. 2008. All rights reserved.
active
bit
active
002aac413
002aac634
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