AT89LP214 Atmel Corporation, AT89LP214 Datasheet - Page 48
AT89LP214
Manufacturer Part Number
AT89LP214
Description
Manufacturer
Atmel Corporation
Datasheet
1.AT89LP213.pdf
(98 pages)
Specifications of AT89LP214
Flash (kbytes)
2 Kbytes
Max. Operating Frequency
20 MHz
Cpu
8051-1C
Max I/o Pins
12
Spi
1
Uart
1
Sram (kbytes)
0.125
Operating Voltage (vcc)
2.4 to 5.0
Timers
2
Isp
SPI/OCD
Watchdog
Yes
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Figure 17-4. Serial Port Mode 3
48
SMOD1
SHIFT
TXD
TI
STOP BIT GEN
CLOCK
DATA
OVERFLOW
= 0
TIMER 1
BIT DETECTOR SAMPLE TIMES
TX
WRITE TO SBUF
AT89LP213/214
RI
÷2
SHIFT
START BIT
RXD
SMOD1
CLOCK
= 1
RX
SEND
RXD
D0
WRITE
SAMPLE
SBUF
TO
TRANSITION
DETECTOR
INTERRUPT
START BIT
1-TO-0
÷16 RESET
D1
÷16
SERIAL
PORT
D2
D0
START
START
RX CLOCK
DETECTOR
÷16
CL
D
TB8
RX CLOCK
S
BIT
Q
D3
STOP BIT
D1
ZERO DETECTOR
RX CONTROL
TX CONTROL
READ
SBUF
RI
TI
INTERNAL BUS
LOAD
SBUF
D4
D2
SBUF
SHIFT
INTERNAL BUS
INPUT SHIFT REG.
SEND
SHIFT
1FFH
LOAD
SBUF
DATA
SBUF
D5
(9 BITS)
D3
D6
D4
SHIFT
D7
D5
TB8
D6
TXD
STOP BIT
D7
RB8
3538E–MICRO–11/10
STOP
BIT
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