AT89LP6440-20PU Atmel, AT89LP6440-20PU Datasheet - Page 6

• Manufacturer Part Number: AT89LP6440-20PU
• Description: MCU 8051 64K FLASH ISP 40PDIP
• Manufacturer: Atmel
• Series: 89LPr

Specifications of AT89LP6440-20PU

• 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: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 1-1.
2. Overview
6
TQFP
35
36
37
38
39
40
41
42
43
44
PLCC
AT89LP6440 - Preliminary
Pin Number
41
42
43
44
1
2
3
4
5
6
AT89LP6440 Pin Description
PDIP
37
38
39
40
1
2
3
4
5
VQFN
The AT89LP6440 is a low-power, high-performance CMOS 8-bit microcontroller with 64K bytes
of In-System Programmable Flash program memory and 8K bytes of Flash data memory. The
device is manufactured using Atmel
patible with the industry-standard 8051 instruction set. The AT89LP6440 is built around an
enhanced CPU core that can fetch a single byte from memory every clock cycle. In the classic
8051 architecture, each fetch requires 6 clock cycles, forcing instructions to execute in 12, 24 or
48 clock cycles. In the AT89LP6440 CPU, standard instructions need only 1 to 4 clock cycles
providing 6 to 12 times more throughput than the standard 8051. Seventy percent of instructions
need only as many clock cycles as they have bytes to execute, and most of the remaining
instructions require only one additional clock. The enhanced CPU core is capable of 20 MIPS
throughput whereas the classic 8051 CPU can deliver only 4 MIPS at the same current con-
sumption. Conversely, at the same throughput as the classic 8051, the new CPU core runs at a
much lower speed and thereby greatly reducing power consumption and EMI.
The AT89LP6440 provides the following standard features: 64K bytes of In-System Programma-
ble Flash program memory, 8K bytes of Flash data memory, 4352 bytes of RAM, up to 38 I/O
lines, three 16-bit timer/counters, up to six PWM outputs, a programmable watchdog timer, two
analog comparators, a 10-bit ADC/DAC with 8 input channels, a full-duplex serial port, a serial
peripheral interface, a two-wire serial interface, an internal RC oscillator, on-chip crystal oscilla-
tor, and a four-level, twelve-vector interrupt system. A block diagram is shown in
35
36
37
38
39
40
41
42
43
44
Symbol
AVDD
P0.2
P0.1
P0.0
VDD
P1.0
P1.1
P1.2
P1.3
P1.4
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
Description
P0.2: User-configurable I/O Port 0 bit 2.
AD2: External memory interface Address/Data bit 2.
ADC2: ADC analog input 2.
P0.1: User-configurable I/O Port 0 bit 1.
AD1: External memory interface Address/Data bit 1.
ADC1: ADC analog input 1.
P0.0: User-configurable I/O Port 0 bit 0.
AD0: External memory interface Address/Data bit 0.
ADC0: ADC analog input 0.
Analog Supply Voltage
Supply Voltage
P1.0: User-configurable I/O Port 1 bit 0.
T2: Timer 2 External Input or Clock Output.
GPI0: General-purpose Interrupt input 0.
P1.1: User-configurable I/O Port 1 bit 1.
T2EX: Timer 2 External Capture/Reload Input.
GPI1: General-purpose Interrupt input 1
P1.2: User-configurable I/O Port 1 bit 2.
GPI2: General-purpose Interrupt input 2.
P1.3: User-configurable I/O Port 1 bit 3.
GPI3: General-purpose Interrupt input 3.
P1.4: User-configurable I/O Port 1 bit 4.
SS: SPI Slave-Select.
GPI6: General-purpose Interrupt input 4.
®
's high-density nonvolatile memory technology and is com-
Figure
3706A–MICRO–9/09
2-1.