N80C251SB16 Intel, N80C251SB16 Datasheet
N80C251SB16
Specifications of N80C251SB16
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N80C251SB16 Summary of contents
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... Information in this document is provided in connection with Intel products. Intel assumes no liability whatsoever, including infringement of any patent or copyright, for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products. Intel retains the right to make changes to these specifications at any time, without notice. Microcontroller products may have minor varia- tions to this specification known as errata. COPYRIGHT © ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER System Bus and I/O Ports P0.7:0 P2.7:0 OTPROM/ROM Port 0 Port 2 Drivers Drivers Memory Data (16) Memory Address (16) Bus Interface Code Bus (16) Code Address (24) Instruction Sequencer SRC1 (8) SRC2 (8) Register ALU ...
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... PROCESS INFORMATION This device is manufactured on a complimentary high-performance metal-oxide (CHMOS) process. Additional process and reliability information is available in Intel’s Components Quality and Reliability Handbook (order number 210997). All thermal impedance data is approximate for static air conditions at 1 watt of power dissipation. Values change depending on operating conditions and application requirements ...
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... Nomenclature Description Commercial operating temperature range (0°C to 70°C) with Intel standard burn-in. X Express operating temperature range (-40°C to 85°C) with Intel standard burn-in. X 44-lead Plastic Leaded Chip Carrier (PLCC) X 40-lead Plastic Dual In-line Package (PDIP) X 40-lead Ceramic Dual In-line Package (Ceramic DIP) ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER Table 5. 8XC251SA/SB/SP/SQ Memory Map Internal Address) FF:FFFFH External Memory (FF:FFF8H–FF:FFFFH are internally decoded for Configuration FF:4000H Byte data in all ROM/OTPROM/EPROM devices with EA For all devices with EA the last ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER 8XC251SA/SB/SP/SQ 44-lead PLCC Package P1.5 / CEX2 P1.6 / CEX3 / WAIT# P1.7 / CEX4 / A17 / WCLK P3.0 / RXD P3.1 / TXD P3.2 / INT0# P3.3 / INT1# Figure 3. 8XC251SA/SB/SP/SQ 44-lead PLCC ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER P1 P1.1 / T2EX 2 P1.2 / ECI 3 P1.3 / CEX0 4 P1.4 / CEX1 5 P1.5 / CEX2 6 P1.6 / CEX3 / WAIT# 7 P1.7 / CEX4 / A17 / ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER Table 6. PLCC/DIP Lead Assignments Listed by Functional Category Address & Data Name AD0/P0.0 AD1/P0.1 AD2/P0.2 AD3/P0.3 AD4/P0.4 AD5/P0.5 AD6/P0.6 AD7/P0.7 A8/P2.0 A9/P2.1 A10/P2.2 A11/P2.3 A12/P2.4 A13/P2.5 A14/P2.6 A15/P2.7 P3.7/RD#/A16 P1.7/CEX4/A17/WCLK Processor Control Name P3.2/INT0# P3.3/INT1# ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER Table 7. Lead Assignments Arranged by Lead Number PLCC DIP Name P1.0/ P1.1/T2EX 4 3 P1.2/ECI 5 4 P1.3/CEX0 6 5 P1.4/CEX1 7 6 P1.5/CEX2 8 7 P1.6/CEX3/WAIT# ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER SIGNAL DESCRIPTIONS Signal Type Name A17 O 18th Address Bit (A17). Output to memory as 18th external address bit (A17) in extended bus applications, depending on the values of bits RD0 and RD1 in configuration byte ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER Table 8. Signal Descriptions (Continued) Signal Type Name P3.0 I/O Port 3. This is an 8-bit, bidirectional I/O port with internal pullups. P3.1 P3.3:2 P3.5:4 P3.6 P3.7 PSEN# O Program Store Enable. Read signal output. This ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER Table 8. Signal Descriptions (Continued) Signal Type Name V GND Secondary Ground. This ground is provided to reduce ground bounce 1 SS and improve power supply bypassing. Connection of this pin to ground is recommended. However, ...
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... Do not finalize a design with this information. Revised information will be published when the product is available +13.0 V Verify with your local Intel Sales Office that -0 +6.5 V you have the latest datasheet before finaliz- ing a design. † WARNING: Stressing the device beyond the “Absolute Maximum Ratings” ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER D.C. Characteristics Parameter values apply to all devices unless otherwise indicated. Table 10. DC Characteristics at V Symbol Parameter V Input Low Voltage IL (except EA#) V Input Low Voltage 1 IL (EA#) V Input High ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER Table 10. DC Characteristics at V Symbol Parameter V Output High Voltage 1 OH (Port 0 in External Address) V Output High Voltage oh2 (Port 2 in External Address during Page Mode) I Logical 0 Input ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER (NC) All other 8XC251SA/SB/SP/SQ pins are unconnected. Figure 5. I Test Condition, Powerdown Mode EA# RST 8XC251SA 8XC251SB 8XC251SP 8XC251SQ XTAL2 XTAL1 2.0 ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER A.C. Characteristics Table 11 lists AC timing parameters for the 8XC251SA/SB/SP/SQ with no wait states. External wait states can be added PSEN#/RD#/WR# and/or by extending ALE. In the table, Notes 3 and 5 mark parameters affected ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER Table 11. AC Characteristics (Capacitive Loading = 50 pF) (Continued) Symbol Parameter T (2) RD#/PSEN# Low to valid Data/Instruction In RLDV @ 12 MHz @ 16 MHz T (2) Data/Instruction Hold Time. Occurs after RHDX RD#/PSEN# ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER Table 11. AC Characteristics (Capacitive Loading = 50 pF) (Continued) Symbol Parameter T (2) Address Valid to RD#/PSEN# Low avrl @ 12 MHz @ 16 MHz T Address (P0) Valid to WR# Low avwl1 @ 12 ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER SYSTEM BUS TIMINGS XTAL1 ALE T LHLL † RD#/PSEN# T AVLL † P0 P2/A16/A17 † The value of this parameter depends on wait states. See the table of AC characteristics. Figure 6. External Read Data Bus ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER XTAL1 ALE T LHLL † T LLRL † RD#/PSEN# T AVLL † AVRL † P2/A16/A17 † The value of this parameter depends on wait states. See the table of AC characteristics. Figure 7. External ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER XTAL1 ALE T LHLL † WR# T AVLL † AVWL2 † P2/A16/A17 † The value of this parameter depends on wait states. See the table of AC characteristics. Figure 8. External Write Data Bus ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER XTAL1 ALE T LHLL † T LLRL † RD#/PSEN# T AVLL † AVRL † P0/A16/A17 † The value of this parameter depends on wait states. See the table of AC characteristics. Figure 9. External ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER XTAL1 ALE T LHLL † WR# T AVLL † AVWL2 † P0/A16/A17 † The value of this parameter depends on wait states. See the table of AC characteristics. Figure 10. External Write Data Bus ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER XTAL1 ALE T LHLL † RD#/PSEN# T AVLL † AVRL † P0/A16/A17 Page Miss †† † The value of this parameter depends on wait states. See the table of AC characteristics. †† A page ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER AC Characteristics — Serial Port Table 12. Serial Port Timing — Shift Register Mode Symbol Parameter T Serial Port Clock Cycle Time XLXL T Output Data Setup to Clock Rising Edge QVSH T Output Data hold ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER External Clock Drive Symbol Parameter 1/T Oscillator Frequency (F CLCL T High Time CHCX T Low Time CLCX T Rise Time CLCH T Fall Time CHCL V – 0 0.2 V – ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER V + 0.1 V LOAD V LOAD V – 0.1 V LOAD For timing purposes, a port pin is no longer floating when a 100 mV change from load voltage occurs and begins to float when ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER PROGRAMMING AND VERIFYING NONVOLATILE MEMORY The 87C251SA/SB/SP/SQ has several areas of nonvolatile memory that can be programmed and/or verified: on-chip code memory (16 Kbytes), lock bits (3 bits), encryption array (128 bytes), and signature bytes (3 ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER Table 14. Programming and Verification Modes 8XC251SA/S B/SP/SQ Mode Program on-chip code Y memory Verify on-chip code Y memory Program configuration bytes Verify configuration bytes Program lock bits Y Verify lock bits Y ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER UCONFIG0 7 UCON WSA1# WSA0# Bit Bit Number Mnemonic 7 UCON Configuration byte location selector: Clearing this bit causes the device to fetch configuration information from on-chip memory. Setting this bit causes the device to locate ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER . UCONFIG1 7 — — — Bit Bit Mnemonic Number 7:5 — Reserved; set these bits when writing to UCONFIG1. 4 INTR Interrupt Mode: If this bit is set, interrupts push 4 bytes onto the stack ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER Programming Cycle P1, P3 Address (16 Bits) P2 Data In (8 Bits) T DVGL T AVGL T GHGL PROG GLGH T SHGL 12.75V EA#/ EHSH P0 Figure 19. Timing for ...
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... OSC 48T OSC 48T OSC 48T OSC Enable G = PROG Valid Longer Valid PP DEVICE TYPE Indicates Intel Devices Indicates MCS251 core product Indicates 83C251SA device Indicates 83C251SB device Indicates 83C251SP device Indicates 83C251SQ device Indicates 87C251SA device Indicates 87C251SB device Indicates ...
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HIGH-PERFORMANCE CHMOS MICROCONTROLLER Revision History The following changes appear in the -004 datasheet address the fact that many of the package prefix variables have changed, all package prefix variables in the document are now indicated with an ...
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