W79E549A40PL

W79E549A40PL Datasheet

W79E549/W79L549 Data Sheet

Part	Datasheet
W79E549A40PL	W79E549A40PL (pdf)

Related Parts	Information
W79L549A25PL	W79L549A25PL

PDF Datasheet Preview
W79E549/W79L549 Data Sheet 8-BIT MICROCONTROLLER Table of Contents- GENERAL DESCRIPTION 3 FEATURES 3 PIN CONFIGURATIONS 4 PIN 5 BLOCK DIAGRAM 7 FUNCTIONAL DESCRIPTION 8 MEMORY ORGANIZATION 10 29 Instruction Timing 29 External Data Memory Access POWER 35 INTERRUPTS 38 PROGRAMMABLE TIMERS/COUNTERS 40 Timer/Counters 0 & 40 Timer/Counter 43 Pulse Width Modulated Outputs 47 Watchdog Timer 50 SERIAL PORT 54 Framing Error Detection 59 Multiprocessor Communications 59 TIMED ACCESS PROTECTION 61 H/W REBOOT MODE BOOT FROM 4K BYTES OF LDFLASH 63 IN-SYSTEM PROGRAMMING 64 The Loader Program Locates at LDFlash Memory 64 The Loader Program Locates at APFlash Memory 64 H/W WRITER MODE 65 SECURITY BITS 66 ELECTRICAL 67 Absolute Maximum Ratings 67 DC 67 A.C. Characteristics 69 Publication Release Date December 11, 2005 W79E549/W79L549 A.C. Specification MOVX Characteristics Using Strech Memory Cycle Program Memory Read Cycle Data Memory Read Data Memory Write TYPICAL APPLICATION CIRCUITS 73 PACKAGE DIMENSIONS 75 APPLICATION NOTE 76 W79E549/W79L549 The W79E L 549 is a fast 8051 compatible microcontroller with a redesigned processor core without wasted clock and memory cycles. As a result, it executes every 8051 instruction faster than the original 8051 for the same crystal speed. Typically, the instruction executing time of W79E L 549 is to 3 times faster than that of traditional 8051, depending on the type of instruction. In general, the overall performance is about times better than the original for the same crystal speed. Giving the same throughput with lower clock speed, power consumption has been improved. Consequently, the W79E L 549 is a fully static CMOS design it can also be operated at a lower crystal clock. The W79E L 549 contains In-System Programmable ISP 32 KB bank-addressed Flash EPROM 4KB auxiliary Flash EPROM for loader program on-chip 1 KB MOVX SRAM power saving modes. y 8-bit CMOS microcontroller y High speed architecture of 4 clocks/machine cycle y Pin compatible with standard 80C52 y Instruction-set compatible with MCS-51 y Seven 8-bit I/O Ports Port 0 has internal pull-up resisters enabled by software y One extra 4-bit I/O port, chip select y Three 16-bit Timers y 7 interrupt sources with two levels of priority y On-chip oscillator and clock circuitry y One enhanced full duplex serial port y 32KB In-System Programmable Flash EPROM y 4KB Auxiliary Flash EPROM for loader program LDFlash y 256 bytes scratch-pad RAM y 1 KB on-chip SRAM for MOVX instruction y Programmable Watchdog Timer y 6 channels of 8 bit PWM y Software Reset y Software programmable access cycle to external RAM/peripherals y Code protection y Packages: − PLCC 68: W79E549A40PN, W79L549A25PN − Lead Free RoHS PLCC 68 W79E549A40PL, W79L549A25PL Publication Release Date December 11, 2005 W79E549/W79L549 DEVICE W79E549 W79L549 OPERATING FREQUENCY VOLTAGE up to 40MHz 4.5V ~ 5.5V up to 25MHz 3.0V ~ 5.5V PIN CONFIGURATIONS NOMAL PLCC68 PACKAGE LEAD FREE ROHS PLCC68 AD2, P0.2 AD1, P0.1 AD0, P0.0 T2, PWM0, P1.0 T2EX, PWM1, P1.1 PWM2, P1.2 PWM3, P1.3 PWM4, P1.4 PWM5, P1.5 P7.4 P7.5 P7.6

PDF Datasheet Preview

W79E549/W79L549 Data Sheet
8-BIT MICROCONTROLLER

Table of Contents-

GENERAL DESCRIPTION 3 FEATURES 3 PIN CONFIGURATIONS 4 PIN 5 BLOCK DIAGRAM 7 FUNCTIONAL DESCRIPTION 8 MEMORY ORGANIZATION 10 29

Instruction Timing 29

External Data Memory Access

POWER 35 INTERRUPTS 38 PROGRAMMABLE TIMERS/COUNTERS 40

Timer/Counters 0 & 40 Timer/Counter 43 Pulse Width Modulated Outputs 47 Watchdog Timer 50 SERIAL PORT 54 Framing Error Detection 59 Multiprocessor Communications 59 TIMED ACCESS PROTECTION 61 H/W REBOOT MODE BOOT FROM 4K BYTES OF LDFLASH 63 IN-SYSTEM PROGRAMMING 64 The Loader Program Locates at LDFlash Memory 64 The Loader Program Locates at APFlash Memory 64 H/W WRITER MODE 65 SECURITY BITS 66 ELECTRICAL 67 Absolute Maximum Ratings 67 DC 67 A.C. Characteristics 69

Publication Release Date December 11, 2005

W79E549/W79L549

A.C. Specification MOVX Characteristics Using Strech Memory Cycle Program Memory Read Cycle Data Memory Read Data Memory Write

TYPICAL APPLICATION CIRCUITS 73

PACKAGE DIMENSIONS 75

APPLICATION NOTE 76

W79E549/W79L549

The W79E L 549 is a fast 8051 compatible microcontroller with a redesigned processor core without wasted clock and memory cycles. As a result, it executes every 8051 instruction faster than the original 8051 for the same crystal speed. Typically, the instruction executing time of W79E L 549 is to 3 times faster than that of traditional 8051, depending on the type of instruction. In general, the overall performance is about times better than the original for the same crystal speed. Giving the same throughput with lower clock speed, power consumption has been improved. Consequently, the W79E L 549 is a fully static CMOS design it can also be operated at a lower crystal clock. The W79E L 549 contains In-System Programmable ISP 32 KB bank-addressed Flash EPROM 4KB auxiliary Flash EPROM for loader program on-chip 1 KB MOVX SRAM power saving modes.
y 8-bit CMOS microcontroller y High speed architecture of 4 clocks/machine cycle y Pin compatible with standard 80C52 y Instruction-set compatible with MCS-51 y Seven 8-bit I/O Ports Port 0 has internal pull-up resisters enabled by software y One extra 4-bit I/O port, chip select y Three 16-bit Timers y 7 interrupt sources with two levels of priority y On-chip oscillator and clock circuitry y One enhanced full duplex serial port y 32KB In-System Programmable Flash EPROM y 4KB Auxiliary Flash EPROM for loader program LDFlash y 256 bytes scratch-pad RAM y 1 KB on-chip SRAM for MOVX instruction y Programmable Watchdog Timer y 6 channels of 8 bit PWM y Software Reset y Software programmable access cycle to external RAM/peripherals y Code protection y Packages:
− PLCC 68:

W79E549A40PN, W79L549A25PN
− Lead Free RoHS PLCC 68 W79E549A40PL, W79L549A25PL

Publication Release Date December 11, 2005

W79E549/W79L549

DEVICE

W79E549 W79L549

OPERATING FREQUENCY VOLTAGE
up to 40MHz 4.5V ~ 5.5V up to 25MHz 3.0V ~ 5.5V

PIN CONFIGURATIONS

NOMAL PLCC68

PACKAGE LEAD FREE ROHS PLCC68

AD2, P0.2

AD1, P0.1

AD0, P0.0

T2, PWM0, P1.0

T2EX, PWM1, P1.1

PWM2, P1.2

PWM3, P1.3

PWM4, P1.4

PWM5, P1.5

P7.4

P7.5

P7.6

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Datasheet ID: W79E549A40PL 516668