DS80C320-QNG+ Dallas Semiconductor, DS80C320-QNG+ Datasheet
DS80C320-QNG+
Specifications of DS80C320-QNG+
Related parts for DS80C320-QNG+
DS80C320-QNG+ Summary of contents
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... Four 8-Bit I/O Ports Three 16-Bit Timer/Counters 256 Bytes Scratchpad RAM Addresses 64kB ROM and 64kB RAM High-Speed Architecture 4 Clocks/Machine Cycle (8032 = 12 33MHz (DS80C320 18MHz (DS80C323) Single-Cycle Instruction in 121ns Uses Less Power for Equivalent Work Dual Data Pointer Optional Variable Length MOVX to Access ...
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... ORDERING INFORMATION Pb-FREE/RoHS- PART COMPLIANT DS80C320-MCG DS80C320-MCG+ DS80C320-QCG DS80C320-QCG+ DS80C320-ECG DS80C320-ECG+ DS80C320-MNG DS80C320-MNG+ DS80C320-QNG DS80C320-QNG+ DS80C320-ENG DS80C320-ENG+ DS80C320-MCL DS80C320-MCL+ DS80C320-QCL DS80C320-QCL+ DS80C320-ECL DS80C320-ECL+ DS80C320-MNL DS80C320-MNL+ DS80C320-QNL DS80C320-QNL+ DS80C320-ENL DS80C320-ENL+ ...
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... Program Store-Enable Output, Active Low. This signal is commonly connected to external ROM memory as a chip enable. active-low pulse width of 2.25 XTAL1 cycles with a period of four XTAL1 cycles. is driven high when data memory (RAM) is being PSEN accessed through the bus and during a reset condition DS80C320/ DS80C323 FUNCTION PSEN provides an ...
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PIN DESCRIPTION (continued) PIN NAME TQFP DIP PLCC ALE AD0 AD1 AD2 AD3 AD4 AD5 AD6 ...
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PIN DESCRIPTION (continued) PIN DIP PLCC TQFP (P2. (P2. A10 (P2. A11 (P2. A12 (P2. A13 (P2. ...
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... Application Note 57: DS80C320 Memory Interface Timing is a useful tool to help the embedded system designer select the proper memories for her or his application. The DS80C320/DS80C323 run the standard 8051 instruction set and is pin compatible with an 80C32 in any of three standard packages. They also provide the same timer/counter resources, full-duplex serial port, 256 bytes of scratchpad RAM, and I/O ports as the standard 80C32 ...
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... In this updated core, dummy memory cycles have been eliminated conventional 80C32, machine cycles are generated by dividing the clock frequency by 12. In the DS80C320/DS80C323, the same machine cycle is performed in 4 clocks. Thus the fastest instruction, one machine cycle, is executed three times faster for the same crystal frequency ...
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... This is because in most cases, the DS80C320/DS80C323 use one cycle for each byte. The user concerned with precise program timing should examine the timing of each instruction for familiarity with the changes ...
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Table 1. Instruction Set Summary SYMBOL FUNCTION A Accumulator Rn Register direct Internal Register Address Internal Register pointed @Ri R1 (except MOVX) rel Two’s Complement Offset Byte INSTRUCTION BYTE ARITHMATIC INSTRUCTIONS ADD A, ...
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Table 1. Instruction Set Summary (continued) INSTRUCTION BYTE DATA TRANSFER INSTRUCTIONS MOV MOV A, direct 2 MOV A, @Ri 1 MOV A, #data 2 MOV Rn MOV Rn, direct 2 MOV Rn, #data 2 MOV ...
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... Average: 2.5 MEMORY ACCESS The DS80C320/DS80C323 do not contain on-chip ROM and 256 bytes of scratchpad RAM. Off-chip memory is accessed using the multiplexed address/data bus on P0 and the MSB address on P2. Figure 3 shows a typical memory connection. Timing diagrams are provided in the Electrical Specifications section ...
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... STRETCH MEMORY CYCLE The DS80C320/DS80C323 allow the application software to adjust the speed of data memory access. The microcontroller is capable of performing the MOVX in as little as two instruction cycles. However, this value can be stretched as needed so that both fast memory and slow memory or peripherals can be accessed with no glue logic ...
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... Sample code listed below illustrates the saving from using the dual DPTR. The example program was original code written for an 8051 and requires a total of 1869 DS80C320/DS80C323 machine cycles. This takes 299ms to execute at 25MHz. The new code using the Dual DPTR requires only 1097 machine cycles taking 175 ...
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... DJNZ R5, MOVE PERIPHERAL OVERVIEW Peripherals in the DS80C320/DS80C323 are accessed using the SFRs. The devices provide several of the most commonly needed peripheral functions in microcomputer-based systems. These functions are new to the 80C32 family and include a second serial port, power-fail reset, power-fail interrupt, and a programmable watchdog timer. These are briefly described in the following paragraphs. More details are available in the High-Speed Microcontroller User’ ...
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... WATCHDOG TIMER For applications that cannot afford to run out of control, the DS80C320/DS80C323 incorporate a programmable watchdog timer circuit. The watchdog timer circuit resets the microcontroller if software fails to reset the watchdog before the selected time interval has elapsed. The user selects one of four timeout values ...
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... Finally, the Watchdog Interrupt is enabled using EWDI (EIE.4). INTERRUPTS The DS80C320/DS80C323 provide 13 sources of interrupt with three priority levels. The Power-fail Interrupt (PFI), if enabled, always has the highest priority. There are two remaining user-selectable priorities: high and low. If two interrupts that have the same priority occur simultaneously, the natural precedence given in Table 4 determines which is acted upon ...
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... Idle mode itself, but the watchdog timer. As mentioned above, the Watchdog Timer provides an optional interrupt capability. This interrupt can provide a periodic interval timer to bring the DS80C320/DS80C323 out of Idle mode. This can be useful even if the Watchdog is not normally used. By enabling the Watchdog Timer and its interrupt prior to invoking Idle, a user can periodically come out of Idle perform an operation, then return to Idle until the next operation ...
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Stop bit to guarantee a correct power-on delay when exiting Stop mode. The second feature allows an additional power saving option. This is the ability to start instantly when exiting Stop mode ...
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Figure 4. Ring Oscillator Startup DIAGRAM ASSUMES THAT THE OPERATION FOLLOWING STOP REQUIRES LESS THAN 18ms COMPLETE. TIMED ACCESS PROTECTION Selected SFR bits are critical to operation, making it desirable to protect against an accidental write operation. The Timed Access ...
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... SPECIAL-FUNCTION REGISTERS Most special features of the DS80C320/DS80C323 or 80C32 are controlled by bits in the SFRs, allowing the devices to add many features but use the same instruction set. When writing software to use a new feature, the SFR must be defined to an assembler or compiler using an equate statement. This is the only change needed to access the new function ...
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... This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. DC ELECTRICAL CHARACTERISTICS—DS80C320 (V = 4.5V to 5.5V -40° ...
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... Not a high-impedance input. This port is a weak address holding latch because Port dedicated as an address bus on the DS80C320. Peak current occurs near the input transition point of the latch, approximately 2V. 10. Over the industrial temperature range, this specification has a maximum value of 200mA. ...
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... Instruction In Low to Address Float PSEN NOTES FOR DS80C320 AC ELECTRICAL CHARACTERISTICS All parameters apply to both commercial and industrial temperature operation unless otherwise noted. Specifications to -40°C are guaranteed by design and are not production tested. AC electrical characteristics assume 50% duty cycle for the oscillator, oscillator frequency > ...
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... MOVX CHARACTERISTICS—DS80C320 PARAMETER Pulse Width RD Pulse Width WR Low to Valid Data In RD Data Hold After Read Data Float After Read ALE Low to Valid Data In Port 0 Address to Valid Data In Port 2 Address to Valid Data In ALE Low to or Low RD WR Port 0 Address Valid to or ...
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DC ELECTRICAL CHARACTERISTICS—DS80C323 PARAMETER Operating Supply Voltage Power-Fail Warning Voltage Minimum Operating Voltage Supply Current Active Mode at 18MHz Supply Current Idle Mode at 18MHz Supply Current Stop Mode, Bandgap Reference Disabled Supply Current Stop Mode, Bandgap Reference Enabled Input ...
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NOTES FOR DS80C323 DC ELECTRICAL CHARACTERISTICS (continued) All parameters apply to both commercial and industrial temperature operation unless otherwise noted. Specifications to -40°C are guaranteed by design and are not production tested. Device operating range is 2.7V to 5.5V. DC ...
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AC ELECTRICAL CHARACTERISTICS—DS80C323 PARAMETER External Oscillator Oscillator Frequency External Crystal ALE Pulse Width Port 0 Address Valid to ALE Low Address Hold After ALE Low Address Hold After ALE Low for MOVX WR ALE Low to Valid Instruction In ALE ...
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MOVX CHARACTERISTICS—DS80C323 PARAMETER Pulse Width RD Pulse Width WR Low to Valid Data In RD Data Hold After Read Data Float After Read ALE Low to Valid Data In Port 0 Address to Valid Data In Port 2 Address to ...
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EXTERNAL CLOCK CHARACTERISTICS PARAMETER Clock High Time Clock Low Time Clock Rise Time Clock Fall Time SERIAL PORT MODE 0 TIMING CHARACTERISTICS PARAMETER SYMBOL Serial Port Clock t XLXL Cycle Time Output Data Setup to t QVXH Clock Rising Edge ...
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POWER-CYCLE TIMING CHARACTERISTICS PARAMETER Crystal Startup Time Power-On Reset Delay NOTES FOR POWER CYCLE TIMING CHARACTERISTICS 1. Startup time for crystals varies with load capacitance and manufacturer. Time shown is for an 11.0592MHz crystal manufactured by Fox crystal. 2. Reset ...
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DATA MEMORY READ CYCLE ...
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DATA MEMORY WRITE CYCLE DATA MEMORY WRITE WITH STRETCH = ...
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DATA MEMORY WRITE WITH STRETCH = 2 EXTERNAL CLOCK DRIVE 4-CYCLE DATA MEMORY WRITE STRETCH VALUE = ...
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SERIAL PORT MODE 0 TIMING SERIAL PORT 0 (SYNCHRONOUS MODE) HIGH SPEED OPERATION SM2 = 1 ≥ TXD CLOCK = XTAL/4 SERIAL PORT 0 (SYNCHRONOUS MODE) SM2 = 0 ≥ TXD CLOCK = XTAL/ ...
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POWER-CYCLE TIMING ...
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PACKAGE INFORMATION (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/DallasPackInfo ...
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... PACKAGE INFORMATION (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/DallasPackInfo.) DS80C320/DS80C323 High-Speed/Low-Power Microcontrollers ...
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PACKAGE INFORMATION (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/DallasPackInfo ...
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... The following represent the key differences between the 103196 and the 041896 version of the DS80C320 data sheet. Please review this summary carefully. 1. Updated DS80C320 25MHz AC Characteristics. The following represent the key differences between the 041895 and the 031096 version of the DS80C320 data sheet. Please review this summary carefully. 1. Remove Port 0, Port 2 from V 2 ...
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... DATA SHEET REVISION SUMMARY (continued) The following represent the key differences between the 05/22/96 and the 10/21/97 version of the DS80C320 data sheet. Please review this summary carefully. DS80C320 1. Added note to clarify I specification Added note to clarify AC timing conditions. 3. Corrected erroneous t label on figure “Serial Port Mode 0 Timing” to read t QVXL 4 ...