AT89LP428-20MU ATMEL [ATMEL Corporation], AT89LP428-20MU Datasheet - Page 86
AT89LP428-20MU
Manufacturer Part Number
AT89LP428-20MU
Description
8-bit Microcontroller with 4K/8K Bytes In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89LP428-20MU.pdf
(149 pages)
- Current page: 86 of 149
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Figure 16-4. Serial Port Mode 1
86
SMOD1
OVERFLOW
TIMER 1
DATA
SHIFT
TXD
TI
CLOCK
RCLK
AT89LP428/828
TCLK
÷2
TX
BIT DETECTOR SAMPLE TIMES
WRITE TO SBUF
“0”
RI
SHIFT
RXD
START BIT
“0”
“0”
CLOCK
“1”
RX
SEND
OVERFLOW
TIMER 2
“1”
“1”
RXD
WRITE
SAMPLE
SBUF
D0
TO
TRANSITION
DETECTOR
INTERRUPT
1-TO-0
÷16 RESET
START BIT
÷16
SERIAL
D1
PORT
START
D2
START
RX CLOCK
DETECTOR
D0
÷16
D
CL
“1”
RX CLOCK
S
BIT
Q
D3
D1
ZERO DETECTOR
RX CONTROL
TX CONTROL
READ
SBUF
RI
TI TI
INTERNAL BUS
LOAD
SBUF
D4
SBUF
D2
SHIFT
INTERNAL BUS
INPUT SHIFT REG.
1FFH
SEND
SHIFT
DATA
LOAD
SBUF
SBUF
D5
(9 BITS)
D3
D6
D4
SHIFT
D7
D5
D6
TXD
STOP BIT
D7
STOP BIT
3654A–MICRO–8/09
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