AT89LP216-20SU Atmel, AT89LP216-20SU Datasheet - Page 4

• Manufacturer Part Number: AT89LP216-20SU
• Description: MCU 8051 2K FLASH 20MHZ 16-SOIC
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP216-20SU

• 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: 14
• 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: 16-SOIC (0.300", 7.5mm Width)
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: UART, SPI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 14
• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

4. Block Diagram
5. Comparison to Standard 8051
5.1
5.2
4
System Clock
Instruction Execution with Single-cycle Fetch
AT89LP216
Figure 4-1.
The AT89LP216 is part of a family of devices with enhanced features that are fully binary com-
patible with the MCS-51 instruction set. In addition, most SFR addresses, bit assignments, and
pin alternate functions are identical to Atmel’s existing standard 8051 products. However, due to
the high performance nature of the device, some system behaviors are different from those of
Atmel's standard 8051 products such as AT89S52 or AT89S2051. The differences from the
standard 8051 are outlined in the following paragraphs.
The CPU clock frequency equals the external XTAL1 frequency. The oscillator is no longer
divided by 2 to provide the internal clock and x2 mode is not supported.
The CPU fetches one code byte from memory every clock cycle instead of every six clock
cycles. This greatly increases the throughput of the CPU. As a consequence, the CPU no longer
executes instructions in 12 to 48 clock cycles. Each instruction executes in only 1 to 4 clock
cycles. See
“Instruction Set Summary” on page 59
AT89LP216 Block Diagram
Configurable I/O
General-purpose
Configurable I/O
Single Cycle
8051 CPU
128 Bytes
2K Bytes
Interrupt
Flash
Port 3
Port 1
RAM
CPU Clock
for more details.
RC Oscillator
Configurable
Comparator
Watchdog
Oscillator
Timer 0
Timer 1
On-Chip
Analog
UART
Timer
SPI
Resonator
Crystal or
3621E–MICRO–11/10