AT89LP51ED2-20AAU Atmel, AT89LP51ED2-20AAU Datasheet - Page 126
AT89LP51ED2-20AAU
Manufacturer Part Number
AT89LP51ED2-20AAU
Description
8-bit Microcontrollers - MCU 64KB 20MHz 2.4V-5.5V
Manufacturer
Atmel
Datasheet
1.AT89LP51ED2-20AAU.pdf
(254 pages)
Specifications of AT89LP51ED2-20AAU
Rohs
yes
Core
8051
Processor Series
AT89x
Data Bus Width
8 bit
Maximum Clock Frequency
20 MHz
Program Memory Size
64 KB
Data Ram Size
256 B
On-chip Adc
Yes
Operating Supply Voltage
2.4 V to 5.5 V
Operating Temperature Range
- 40 C to + 85 C
Package / Case
LQFP-44
Mounting Style
SMD/SMT
Data Rom Size
4 KB
Interface Type
2-Wire, SPI, UART
Number Of Programmable I/os
36
Number Of Timers
3
Program Memory Type
Flash
Factory Pack Quantity
160
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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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