NEC PD78214 - Manual (Page 32)

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Chapter 1 General
1
1.1 FEATURES
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78K/II series
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Multiplexed internal bus (faster execution of instructions)
Minimum instruction cycle (operating at 12 MHz): 333 ns ( µPD78212, µPD78214, and µPD78P214),
or 500 ns (
µPD78213)
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Instruction set suitable for control applications
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Data memory expansion function (memory space of 1MB with two bank designation pointers)
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Interrupt controller (with two priority levels)
• Vectored interrupt handling
• Macro service
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Internal memory
• ROM
Masked ROM : 16KB (
µPD78214), 8KB (µPD78212), or none (µPD78213)
PROM : 16KB (
µPD78P214)
• RAM: 512 bytes (
µPD78213, µPD78214, and µPD78P214), or 384 bytes (µPD78212)
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Number of I/O pins: 54 (
µPD78212, µPD78214, and µPD78P214), or 36 (µPD78213)
• Number of pins with software-programmable pull-up resistors: 16 ( µPD78213 only),
or 34 (other than
µPD78213)
• Number of LED direct-drive pins: 16 (
µPD78212, µPD78214, and µPD78P214)
• Number of transistor direct-drive pins: 8
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Serial interface
• UART (baud rate generator included)
• Synchronous serial interface (three-wire serial I/O, serial bus interface)
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Real-time output ports (two stepper motors can be independently controlled by combining the output ports with
an eight-bit timer/counter.)
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Eight-bit A/D converter (analog eight-bit input)
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Highly functional timer/counter units
• 16-bit unit
• Three eight-bit units