AT89LP4052-20SU Atmel, AT89LP4052-20SU Datasheet - Page 92

• Manufacturer Part Number: AT89LP4052-20SU
• Description: IC 8051 MCU FLASH 4K 20SOIC
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP4052-20SU

• 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: 15
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SOIC (7.5mm Width)
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: SPI/UART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 15
• Number Of Timers: 2
• Operating Supply Voltage: 2.4 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89ISP
• Minimum Operating Temperature: - 40 C
• Package: 20SOIC W
• Device Core: 8051
• Family Name: AT89
• Maximum Speed: 20 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Table of Contents (Continued)
ii
AT89LP2052/LP4052
13. Power Saving Modes ............................................................................. 14
14. Interrupts ................................................................................................ 16
15. I/O Ports .................................................................................................. 20
16. Enhanced Timer/Counters .................................................................... 24
17. External Interrupts ................................................................................. 30
18. Serial Interface ....................................................................................... 31
12.3 External Reset .....................................................................................................14
12.4 Watchdog Reset ..................................................................................................14
13.1 Idle Mode .............................................................................................................15
13.2 Power-down Mode ..............................................................................................15
14.1 Interrupt Response Time .....................................................................................17
15.1 Quasi-bidirectional Output ...................................................................................20
15.2 Input-only Mode ...................................................................................................21
15.3 Open-drain Output ...............................................................................................22
15.4 Push-pull Output ..................................................................................................22
15.5 Port 1 Analog Functions ......................................................................................22
15.6 Port Read-Modify-Write .......................................................................................23
15.7 Port Alternate Functions ......................................................................................23
16.1 Mode 0 ................................................................................................................24
16.2 Mode 1 ................................................................................................................25
16.3 Mode 2 ................................................................................................................26
16.4 Mode 3 ................................................................................................................26
16.5 Pulse Width Modulation .......................................................................................29
16.6 Timer/Counter Pin Configuration .........................................................................30
18.1 Multiprocessor Communications .........................................................................31
18.2 Baud Rates ..........................................................................................................33
18.3 More About Mode 0 .............................................................................................34
18.4 More About Mode 1 .............................................................................................36
18.5 More About Modes 2 and 3 .................................................................................38
18.6 Framing Error Detection ......................................................................................41
18.7 Automatic Address Recognition ..........................................................................41
3547J–MICRO–10/09