AT89LP6440-20JU Atmel, AT89LP6440-20JU Datasheet - Page 189

• 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

Table of Contents
3706A–MICRO–9/09
1
2
3
4
5
6
7
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 6
Memory Organization ............................................................................ 10
Special Function Registers ................................................................... 21
Enhanced CPU ....................................................................................... 22
System Clock ......................................................................................... 30
Reset ....................................................................................................... 32
1.1
1.2
1.3
1.4
1.5
2.1
2.2
3.1
3.2
3.3
3.4
3.5
5.1
5.2
5.3
6.1
6.2
6.3
6.4
6.5
7.1
7.2
7.3
7.4
40P6: 40-lead PDIP ...........................................................................................2
44A: 44-lead TQFP (Top View) .........................................................................2
44J: 44-lead PLCC ............................................................................................3
44M1: 44-pad VQFN/MLF .................................................................................3
Pin Description ..................................................................................................4
Block Diagram ...................................................................................................7
Comparison to Standard 8051 ...........................................................................8
Program Memory .............................................................................................10
Internal Data Memory ......................................................................................11
External Data Memory .....................................................................................12
Extended Stack ...............................................................................................19
In-Application Programming (IAP) ...................................................................20
Multiply–Accumulate Unit (MAC) .....................................................................23
Enhanced Dual Data Pointers .........................................................................24
Instruction Set Extensions ...............................................................................29
Crystal Oscillator .............................................................................................30
External Clock Source .....................................................................................31
Internal RC Oscillator ......................................................................................31
System Clock Out ............................................................................................31
System Clock Divider ......................................................................................31
Power-on Reset ...............................................................................................32
Brown-out Reset ..............................................................................................34
External Reset .................................................................................................34
Watchdog Reset ..............................................................................................35
AT89LP6440 - Preliminary
i