AT89LP428-20AU Atmel, AT89LP428-20AU Datasheet - Page 86
AT89LP428-20AU
Manufacturer Part Number
AT89LP428-20AU
Description
MCU 8051 4K FLASH SPI 32TQFP
Manufacturer
Atmel
Series
89LPr
Datasheet
1.AT89LP428-20AU.pdf
(149 pages)
Specifications of AT89LP428-20AU
Core Processor
8051
Core Size
8-Bit
Speed
20MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
30
Program Memory Size
4KB (4K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
2.4 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
Processor Series
AT89x
Core
8051
3rd Party Development Tools
PK51, CA51, A51, ULINK2
Development Tools By Supplier
AT89ISP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89LP428-20AU
Manufacturer:
RFMD
Quantity:
1 240
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Figure 16-4. Serial Port Mode 1
86
SMOD1
OVERFLOW
TIMER 1
DATA
SHIFT
TXD
TI
CLOCK
RCLK
AT89LP428/828
TCLK
÷2
TX
BIT DETECTOR SAMPLE TIMES
WRITE TO SBUF
“0”
RI
SHIFT
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
SERIAL
D1
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
D7
STOP BIT
3654A–MICRO–8/09
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