AT89LP428-20PU Microchip

Features 8-bit Microcontroller Compatible with MCS 51 Products Enhanced 8051 Architecture Single-clock Cycle per Byte Fetch Up to 20 MIPS Throughput at 20 MHz Clock Frequency Fully Static Operation: 0 Hz to 20 MHz On-chip 2-cycle Hardware Multiplier 256 x 8 Internal RAM 512 x 8 Internal Extra RAM Dual Data Pointers 8-bit 4-level Interrupt Priority Nonvolatile Program and Data Memory Microcontroller 4K/8K Bytes of In-System Programmable (ISP) Flash Program Memory 512/1024 Bytes of Flash Data Memory with 4K/8K Endurance: Minimum 100,000 Write/Erase Cycles (for Both Program/Data Memories) Bytes In-System Serial Interface for Program Downloading Programmable 64-byte Fast Page Programming Mode 128-byte User Signature Array Flash 2-level Program Memory Lock for Software Security In-Application Programming of Program Memory Peripheral Features Three 16-bit Enhanced Timer/Counters AT89LP428 Two 8-bit PWM Outputs 4-channel 16-bit Compare/Capture/PWM Array AT89LP828 Enhanced UART with Automatic Address Recognition and Framing Error Detection Enhanced Master/Slave SPI with Double-buffered Send/Receive Programmable Watchdog Timer with Software Reset Dual Analog Comparators with Selectable Interrupts and Debouncing 8 General-purpose Interrupt Pins Special Microcontroller Features 2-wire On-chip Debug Interface Brown-out Detection and Power-on Reset with Power-off Flag Active-low External Reset Pin Internal RC Oscillator Low Power Idle and Power-down Modes Interrupt Recovery from Power-down Mode I/O and Packages Up to 30 Programmable I/O Lines 28-lead PDIP or 32-lead TQFP/PLCC/MLF Configurable I/O Modes Quasi-bidirectional (80C51 Style) Input-only (Tristate) Push-pull CMOS Output Open-drain Operating Conditions 2.4V to 5.5V V Voltage Range CC -40C to 85C Temperature Range 0 to 20 MHz 2.45.5V 3654AMICRO8/09 0 to 25 MHz 4.05.5V1. Pin Configurations 1.3 32J 32-lead PLCC 1.1 28P3 28-lead PDIP AIN1/P2.5 1 28 P2.6/AIN2 AIN0/P2.4 2 27 P2.7/AIN3 RXD/P3.0 3 26 P1.7/SCK TXD/P3.1 4 25 P1.6/MISO XTAL2/P4.1 5 29 P1.6/MISO XTAL2/P4.1 5 24 P1.5/MOSI XTAL1/P4.0 6 28 P1.5/MOSI XTAL1/P4.0 6 23 P1.4/SS P4.5 7 27 P1.4/SS GND 7 22 P1.3 GND 8 26 P1.3 INT0/P3.2 8 21 VCC P4.4 9 25 P4.2 INT1/P3.3 9 20 P1.2 INT0/P3.2 10 24 VCC T0/P3.4 10 19 P1.1/T2EX INT1/P3.3 11 23 P4.3 T1/P3.5 11 18 P1.0/T2 T0/P3.4 12 22 P1.2 RST/P3.6 12 17 P3.7 T1/P3.5 13 21 P1.1/T2EX CCD/P2.3 13 16 P2.0/CCA CCC/P2.2 14 15 P2.1/CCB 1.4 32M1-A 32-pad MLF (Top View) 1.2 32A 32-lead TQFP (Top View) XTAL2/P4.1 1 24 P1.5/MOSI XTAL2/P4.1 1 24 P1.5/MOSI XTAL1/P4.0 2 23 P1.4/SS XTAL1/P4.0 2 23 P1.4/SS P4.5 3 22 P1.3 P4.5 3 22 P1.3 GND 4 21 P4.2 GND 4 21 P4.2 P4.4 5 20 VDD P4.4 5 20 VCC INT0/P4.3 6 19 P4.3 19 P4.3 INT0/P3.2 6 INT1/P4.4 7 18 P1.2 INT1/P3.3 7 18 P1.2 T0/P3.4 8 17 P1.1/T2EX T0/P3.4 8 17 P1.1/T2EX NOTE: Bottom pad should be soldered to ground 2 AT89LP428/828 3654AMICRO8/09 T1/P3.5 9 32 P3.1/TXD RST/P3.6 10 31 P3.0/RXD CCD/P2.3 11 30 P2.4/AIN0 CCC/P2.2 12 29 P2.5/AIN1 CCB/P2.1 13 28 P2.6/AIN2 CCA/P2.0 14 27 P2.7/AIN3 P3.7T2/ 15 26 P1.7/SCK P1.0 16 25 P1.6/MISO T1/P3.5 9 32 P3.1/TXD RST/P3.6 14 4 P3.1/TXD RST/P3.6 10 31 P3.0/RXD CCD/P2.3 15 3 P3.0/RXD CCD/P2.3 11 30 P2.4/AIN0 CCC/P2.2 12 29 P2.5/AIN1 CCC/P2.2 16 2 P2.4/AIN0 CCB/P2.1 13 28 P2.6/AIN2 CCB/P2.1 17 1 P2.5/AIN1 CCA/P2.0 14 27 P2.7/AIN3 CCA/P2.0 18 32 P2.6/AIN2 P3.7T2/ 15 26 P1.7/SCK P3.7 19 31 P2.7/AIN3 P1.0 16 25 P1.6/MISO T2/P1.0 20 30 P1.7/SCK