AT89LP51 Atmel Corporation, AT89LP51 Datasheet - Page 69
AT89LP51
Manufacturer Part Number
AT89LP51
Description
Manufacturer
Atmel Corporation
Datasheet
1.AT89LP51.pdf
(117 pages)
Specifications of AT89LP51
Flash (kbytes)
4 Kbytes
Max. Operating Frequency
20 MHz
Cpu
8051-1C
Max I/o Pins
36
Uart
1
Sram (kbytes)
0.25
Eeprom (bytes)
256
Self Program Memory
IAP
Operating Voltage (vcc)
2.4 to 5.5
Timers
3
Isp
SPI
Watchdog
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89LP51-20JU
Manufacturer:
Atmel
Quantity:
44
Company:
Part Number:
AT89LP51-20PU
Manufacturer:
TI
Quantity:
183
Company:
Part Number:
AT89LP51RD2-20AAU
Manufacturer:
INFINEON
Quantity:
450
Figure 14-6. Serial Port Mode 1
3709D–MICRO–12/11
SMOD1
OVERFLOW
TIMER 1
SHIFT
TXD
TI
DATA
CLOCK
RCLK
TCLK
÷2
TX
BIT DETECTOR SAMPLE TIMES
WRITE TO SBUF
“0”
SHIFT
RI
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
D1
SERIAL
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
AT89LP51/52
D7
STOP BIT
69