AT89LP214-20PU Atmel, AT89LP214-20PU Datasheet - Page 96

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

Specifications of AT89LP214-20PU

• 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-DIP (0.300", 7.62mm)
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: SPI/UART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 2
• Operating Supply Voltage: 2.4 V to 5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Development Tools By Supplier: AT89ISP
• Minimum Operating Temperature: - 40 C
• 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
AT89LP213/214
11 Power Saving Modes ............................................................................. 17
12 Interrupts ................................................................................................ 19
13 I/O Ports .................................................................................................. 23
14 Enhanced Timer/Counters .................................................................... 28
15 External Interrupts ................................................................................. 37
16 General-purpose Interrupts .................................................................. 37
17 Serial Interface ....................................................................................... 39
18 Serial Peripheral Interface ..................................................................... 50
19 Analog Comparator ............................................................................... 56
10.5
11.1
11.2
12.1
13.1
13.2
13.3
13.4
13.5
14.1
14.2
14.3
14.4
14.5
17.1
17.2
17.3
17.4
17.5
17.6
17.7
19.1
Software Reset ................................................................................................17
Idle Mode .........................................................................................................17
Power-down Mode ...........................................................................................17
Interrupt Response Time .................................................................................21
Port Configuration ............................................................................................24
Port 1 Analog Functions ..................................................................................26
Port Read-modify-write ....................................................................................27
Ports During Powerdown .................................................................................27
Port Alternate Functions ..................................................................................27
Mode 0 – Variable Width Timer/Counter .........................................................29
Mode 1 – 16-bit Auto-Reload Timer/Counter ...................................................30
Mode 2 – 8-bit Auto-reload Timer/Counter ......................................................30
Mode 3 – 8-bit Split Timer ...............................................................................31
Pulse Width Modulation ...................................................................................33
Multiprocessor Communications .....................................................................39
Baud Rates ......................................................................................................41
More About Mode 0 .........................................................................................42
More About Mode 1 .........................................................................................44
More About Modes 2 and 3 .............................................................................46
Framing Error Detection ..................................................................................49
Automatic Address Recognition ......................................................................49
Comparator Interrupt with Debouncing ............................................................56
3538E–MICRO–11/10