AT89LP51RC2 Atmel Corporation, AT89LP51RC2 Datasheet - Page 121
AT89LP51RC2
Manufacturer Part Number
AT89LP51RC2
Description
Manufacturer
Atmel Corporation
Specifications of AT89LP51RC2
Flash (kbytes)
32 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)
1.375
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 17-5. Serial Port Mode 1
3722A–MICRO–10/11
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
AT89LP51RB2/RC2/IC2 Preliminary
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
121
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