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DS80C320MCL - High-Speed/Low-Power Microcontroller
| Photograph |
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| Features |
- 80C32-compatible
- - 8051 pin- and instruction set-compatible
- - 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 (compared to 8032 = 12)
- - DC to 33MHz (DS80C320)
- - Single-cycle instruction in 121ns
- - Dual data pointer
- - Optional variable length MOVX to access fast/slow RAM /peripherals
- High-level integration
- - Power-fail reset
- - Programmable watchdog timer
- - Early-warning power-fail interrupt
- Two full-duplex hardware serial ports
- 13 total interrupt sources with six external
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| Pin Layout |
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| Pin Description |
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Pin Number
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Description
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1 - 8
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Port 1 - I/O
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9
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RST - Reset Input
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10 - 17
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Port 3 - I/O
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18
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XTAL2 - Crystal
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19
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XTAL1 - Crystal
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20
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GND - Ground
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21 - 28
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Port 2 - I/O
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29
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PSEN - Output
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30
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ALE - Output
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31
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EA - Input
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32 - 39
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Port 0 - I/O
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40
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Vcc - +5V Supply
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| Dimensional Drawing |
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| Technical Data |
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Datasheet
Application Notes
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Integrated Circuits