AT89LP214-20XU Atmel, AT89LP214-20XU Datasheet - Page 48

• Manufacturer Part Number: AT89LP214-20XU
• Description: MCU 8051 2K FLASH 20MHZ 14-TSSOP
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP214-20XU

• 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: 12
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 14-TSSOP
• Package: 14TSSOP
• Device Core: 8051
• Family Name: AT89
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 12
• Interface Type: SPI/UART
• Number Of Timers: 2
• Core: 8051
• Processor Series: AT89x
• Maximum Clock Frequency: 20 MHz
• Data Ram Size: 128 B
• Mounting Style: SMD/SMT
• Height: 1.05 mm
• Length: 5.1 mm
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.4 V
• Width: 4.5 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

Figure 17-4. Serial Port Mode 3
48
SMOD1
SHIFT
TXD
TI
STOP BIT GEN
CLOCK
DATA
OVERFLOW
= 0
TIMER 1
BIT DETECTOR SAMPLE TIMES
TX
WRITE TO SBUF
AT89LP213/214
RI
÷2
SHIFT
START BIT
RXD
SMOD1
CLOCK
= 1
RX
SEND
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
3538E–MICRO–11/10
STOP
BIT