W79E548A40PL

W79E548A40PL Datasheet

W79E548/W79L548 Data Sheet

Part	Datasheet
W79E548A40PL	W79E548A40PL (pdf)

Related Parts	Information
W79L548A25PL	W79L548A25PL

PDF Datasheet Preview
W79E548/W79L548 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 9 28 Instruction Timing 29 External Data Memory Access POWER 34 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 60 H/W REBOOT MODE BOOT FROM 4K BYTES OF LDFLASH 62 IN-SYSTEM PROGRAMMING 63 The Loader Program Locates at LDFlash Memory 63 The Loader Program Locates at APFlash Memory 63 H/W WRITER MODE 63 SECURITY BITS 64 ELECTRICAL 65 Absolute Maximum Ratings 65 DC 65 A.C. Characteristics 67 Publication Release Date December 12, 2005 W79E548/W79L548 A.C. Specification MOVX Characteristics Using Strech Memory Cycle Program Memory Read Cycle Data Memory Read Data Memory Write TYPICAL APPLICATION CIRCUITS 71 PACKAGE DIMENSIONS 73 APPLICATION NOTE 74 W79E548/W79L548 The W79E L 548 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 548 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 548 is a fully static CMOS design it can also be operated at a lower crystal clock. The W79E L 548 contains In-System Programmable ISP 128 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 Dual 64KB In-System Programmable Flash EPROM banks APFlash0 and APFlash1 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 W79E548A40PN, W79L548A25PN − Lead Free RoHS PLCC 68 W79E548A40PL, W79L548A25PL Publication Release Date December 12, 2005 W79E548/W79L548 DEVICE W79E548 W79L548 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 P7.7 P4.2

PDF Datasheet Preview

W79E548/W79L548 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 9 28

Instruction Timing 29

External Data Memory Access

POWER 34 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 60 H/W REBOOT MODE BOOT FROM 4K BYTES OF LDFLASH 62 IN-SYSTEM PROGRAMMING 63 The Loader Program Locates at LDFlash Memory 63 The Loader Program Locates at APFlash Memory 63 H/W WRITER MODE 63 SECURITY BITS 64 ELECTRICAL 65 Absolute Maximum Ratings 65 DC 65 A.C. Characteristics 67

Publication Release Date December 12, 2005

W79E548/W79L548

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

TYPICAL APPLICATION CIRCUITS 71

PACKAGE DIMENSIONS 73

APPLICATION NOTE 74

W79E548/W79L548

The W79E L 548 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 548 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 548 is a fully static CMOS design it can also be operated at a lower crystal clock. The W79E L 548 contains In-System Programmable ISP 128 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 Dual 64KB In-System Programmable Flash EPROM banks APFlash0 and APFlash1 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 W79E548A40PN, W79L548A25PN − Lead Free RoHS PLCC 68 W79E548A40PL, W79L548A25PL

Publication Release Date December 12, 2005

W79E548/W79L548

DEVICE

W79E548 W79L548

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

P7.7

P4.2

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived W79E548A40PL Datasheet file may be downloaded here without warranties.

Datasheet ID: W79E548A40PL 516657