AT89LP51ED2 Atmel Corporation, AT89LP51ED2 Datasheet - Page 126
AT89LP51ED2
Manufacturer Part Number
AT89LP51ED2
Description
Manufacturer
Atmel Corporation
Specifications of AT89LP51ED2
Flash (kbytes)
64 Kbytes
Max. Operating Frequency
20 MHz
Cpu
8051-1C
Max I/o Pins
42
Spi
1
Twi (i2c)
1
Uart
1
Adc Channels
7
Adc Resolution (bits)
10
Adc Speed (ksps)
153.8
Sram (kbytes)
2.25
Eeprom (bytes)
4096
Self Program Memory
API
Operating Voltage (vcc)
2.4 to 5.5
Timers
4
Isp
SPI/OCD/UART
Watchdog
Yes
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Figure 17-7. Serial Port Mode 3
126
SHIFT
TXD
TI
STOP BIT GEN
CLOCK
DATA
OVERFLOW
SMOD1
TIMER 1
BIT DETECTOR SAMPLE TIMES
TX
WRITE TO SBUF
AT89LP51RD2/ED2/ID2 Preliminary
RCLK
TCLK
RI
÷2
SHIFT
“0”
START BIT
RXD
CLOCK
RX
“0”
“0”
SEND
“1”
OVERFLOW
TIMER 2
“1”
“1”
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
3714A–MICRO–7/11
STOP
BIT
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