DS87C520-ECL+ ,EPROM/ROM High-Speed MicrocontrollersFEATURES PACKAGE OUTLINE § 80C52-compatible - 8051 pin and instruction set compatible - Four 8- ..
DS87C520ENL ,EPROM/ROM high-speed micro, 80C52-compatible, 256 bytes scratchpad RAM, 16kB program memory, 1kB extra on-chip SRAM for MOVX, 33 MHzfeatures where noted. Please contact your local Dallas Semiconductor sales representative for order ..
DS87C520ENL ,EPROM/ROM high-speed micro, 80C52-compatible, 256 bytes scratchpad RAM, 16kB program memory, 1kB extra on-chip SRAM for MOVX, 33 MHz PRELIMINARY DS87C520/DS83C520EPROM/ROM High-Speed Micro
DS87C520-ENL ,EPROM/ROM high-speed micro, 80C52-compatible, 256 bytes scratchpad RAM, 16kB program memory, 1kB extra on-chip SRAM for MOVX, 33 MHz PRELIMINARY DS87C520/DS83C520EPROM/ROM High-Speed Micro
DS87C520ENL+ ,EPROM/ROM high-speed micro, 80C52-compatible, 256 bytes scratchpad RAM, 16kB program memory, 1kB extra on-chip SRAM for MOVX, 33 MHzapplications will see a speed improvement of 2.5 times using the same code and the same crystal. Th ..
DS87C520-ENL+ ,EPROM/ROM High-Speed Microcontrollersapplications. It is identical in all respects to the DS87C520, except that the 16 kB of EPROM is re ..
ECH8604 ,N CHANNEL MOS SILICON TRANSISTOR
ECH8605 ,Pch+PchAbsolute Maximum Ratings at Ta=25°CParameter Symbol Conditions Ratings UnitDrain-to-Source Voltage ..
ECH8606 ,Nch+NchAbsolute Maximum Ratings at Ta=25°CParameter Symbol Conditions Ratings UnitDrain-to-Source Voltage ..
ECH8613 ,Pch+PchAbsolute Maximum Ratings at Ta=25°CParameter Symbol Conditions Ratings UnitDrain-to-Source Voltage ..
ECH8649 ,N-Channel Power MOSFET, 20V, 7.5A, 17mOhm, Dual ECH8Maximum Ratings at Ta=25°CParameter Symbol Conditions Ratings UnitDrain-to-Source Voltage V 20 VDSS ..
ECH8653 ,N-Channel Power MOSFET, 20V, 7.5A, 20mOhm, Dual ECH8Maximum Ratings at Ta=25°CParameter Symbol Conditions Ratings UnitDrain-to-Source Voltage V 20 VDSS ..
DS83C520C03-DS87C520-ECL+-DS87C520-ENL+-DS87C520MCL+-DS87C520-MCL+-DS87C520-MNL+-DS87C520-QCL+
EPROM/ROM High-Speed Microcontrollers
FEATURES § 80C52-compatible 8051 pin and instruction set compatible - Four 8-bit I/O ports Three 16-bit timer/counters 256 bytes scratchpad RAM § Large on-chip memory 16kB program memory - 1kB extra on-chip SRAM for MOVX
§ ROMSIZE feature Selects internal ROM size from 0 to 16kB - Allows access to entire external memory
map - Dynamically adjustable by software Useful as boot block for external FLASH
§ High-speed architecture - 4 clocks/machine cycle (8051 = 12) Runs DC to 33MHz clock rates - Single-cycle instruction in 121ns Dual data pointer Optional variable length MOVX to access fast/slow RAM/peripherals
§ Power Management Mode - Programmable clock source to save power CPU runs from (crystal/64) or
(crystal/1024) - Provides automatic hardware and software
exit § EMI Reduction Mode disables ALE
§ Two full-duplex hardware serial ports
§ High integration controller includes: - Power-Fail Reset Early-Warning Power-Fail Interrupt - Programmable Watchdog Timer
§ 13 total interrupt sources with 6 external
§ Available in 40-pin PDIP, 44-pin PLCC, 44-pin TQFP, and 40-pin windowed CERDIP Factory Mask DS83C520 or EPROM (OTP) DS87C520
PACKAGE OUTLINE
EPROM/ROM High-Speed MicroDS87C520/DS83C520
DESCRIPTION The DS87C520/DS83C520 EPROM/ROM High-Speed Micro is a fast 8051-compatible microcontroller.
It features a redesigned processor core without wasted clock and memory cycles. As a result, it executes
every 8051 instruction between 1.5 and 3 times faster than the original for the same crystal speed. Typical applications will see a speed improvement of 2.5 times using the same code and the same crystal.
The DS87C520/DS83C520 offers a maximum crystal speed of 33 MHz, resulting in apparent execution
speeds of 82.5 MHz (approximately 2.5X).
The DS87C520/DS83C520 is pin-compatible with all three packages of the standard 8051 and includes standard resources such as three timer/counters, serial port, and four 8-bit I/O ports. It features 16 kB of
EPROM or Mask ROM with an extra 1 kB of data RAM. Both OTP and windowed packages are
available. Besides greater speed, the microcontroller includes a second full hardware serial port, seven additional
interrupts, programmable Watchdog Timer, Brown-out Monitor, and Power-Fail Reset. The device also provides dual data pointers (DPTRs) to speed block data memory moves. It also can adjust the speed of
MOVX data memory access from two to nine machine cycles for flexibility in selecting external memory and peripherals.
A new Power Management Mode (PMM) is useful for portable applications. This feature allows software to select a lower speed clock as the main time base. While normal operation has a machine cycle rate of 4
clocks per cycle, the PMM runs the processor at 64 or 1024 clocks per cycle. For example, at 12 MHz,
standard operation has a machine cycle rate of 3 MHz. In Power Management Mode, software can select either 187.5 kHz or 11.7 kHz machine cycle rate. There is a corresponding reduction in power
consumption when the processor runs slower. The EMI reduction feature allows software to select a reduced emission mode. This disables the ALE
signal when it is unneeded. The DS83C520 is a factory Mask ROM version of the DS87C520 designed for high-volume, cost-
sensitive applications. It is identical in all respects to the DS87C520, except that the 16 kB of EPROM is replaced by a user-supplied application program. All references to features of the DS87C520 will apply to
the DS83C520, with the exception of EPROM-specific features where noted. Please contact your local
Dallas Semiconductor sales representative for ordering information.
ORDERING INFORMATION: DESCRIPTION DS87C520/DS83C520
DS87C530/DS83C520 BLOCK DIAGRAM Figure 1 PIN DESCRIPTION Table 1 DS87C520/DS83C520
DS87C520/DS83C520
