AT89LP6440-20JU Atmel, AT89LP6440-20JU Datasheet - Page 7

• Manufacturer Part Number: AT89LP6440-20JU
• Description: MCU 8051 64K FLASH ISP 44PLCC
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP6440-20JU

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 38
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 8K x 8
• Ram Size: 4.25K x 8
• Voltage - Supply (vcc/vdd): 2.4 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Processor Series: AT89x
• Core: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 8 KB
• Interface Type: 2-Wire, SPI
• Maximum Clock Frequency: 24 MHz
• Number Of Programmable I/os: 38
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 3.6 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
• On-chip Adc: 10 bit, 8 Channel
• On-chip Dac: 10 bit, 8 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2.1
Figure 2-1.
3706A–MICRO–9/09
Block Diagram
AT89LP6440 Block Diagram
Resonator
Crystal or
Timer 0 and Timer 1 in the AT89LP6440 are enhanced with two new modes. Mode 0 can be
configured as a variable 9- to 16-bit timer/counter and Mode 1 can be configured as a 16-bit
auto-reload timer/counter. In addition, the timer/counters may each independently drive an 8-bit
precision pulse width modulation output.
Timer 2 on the AT89LP6440 serves as a 16-bit time base for a 4-channel Compare/Capture
Array with up to four multi-phasic, variable precision (up to 16-bit) PWM outputs.
The enhanced UART of the AT89LP6440 includes Framing Error Detection and Automatic
Address Recognition. In addition, enhancements to Mode 0 allow hardware accelerated emula-
tion of half-duplex SPI or Two Wire interfaces.
The I/O ports of the AT89LP6440 can be independently configured in one of four operating
modes. In quasi-bidirectional mode, the ports operate as in the classic 8051. In input-only mode,
the ports are tristated. Push-pull output mode provides full CMOS drivers and open-drain mode
provides just a pull-down. In addition, all 8 pins of Port 1 can be configured to generate an inter-
rupt using the general-purpose interrupt interface.
Configurable I/O
Configurable I/O
Configurable I/O
Configurable I/O
Configurable I/O
Flash Code
Configurable
64K Bytes
Oscillator
On-Chip
Debug
Port 0
Port 1
Port 2
Port 3
Port 4
Flash Data
8K Bytes
8051 Single Cycle CPU
256 Bytes
General-purpose
RC Oscillator
RAM
Accumulate
Watchdog
Dual Data
(16 x 16)
Interrupt
Pointers
Internal
Multiply
Timer
POR
BOD
AT89LP6440 - Preliminary
4K Bytes
ERAM
8-channel 10-bit
Capture Array
Comparators
Dual Analog
Compare/
ADC/DAC
Timer 0
Timer 1
Timer 2
UART
Interface
XRAM
TWI
SPI
8
7