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Z87C33 데이터시트(PDF) 13 Page - Zilog, Inc.

부품명 Z87C33
상세설명  CMOS Z8짰 MCU Consumer Controller Processor
PDF  72 Pages
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제조업체  ZILOG [Zilog, Inc.]
홈페이지  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z87C33 데이터시트(HTML) 13 Page - Zilog, Inc.

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PS015601-1003
Z87C33
CMOS Z8“ MCU Consumer Controller Processor
7
Figure 4.Port 2 Configuration
Port 3 (P37–P30).
Port 3 is an 8-bit, CMOS-compatible port, with four fixed inputs
(P33–P30) and four fixed outputs (P34–P37). Port 3 is configured under software
control for Input/Output, Counter/Timers, interrupt, and UART. Port 3, bit 0 input is
Schmitt-triggered, and pins P31, P32, and P33 are standard CMOS inputs (no
autolatches). Pins P34, P35, P36, P37 are push-pull output lines. Low-EMI output
buffers are globally programmed by the software.
Two onboard comparators process analog signals on P31 and P32 with reference
to the voltage on P33. The analog function is enabled by programming Port 3
Z8
Port 2 (I/O)
Open
Out
In
PAD
Auto Latch
1.5
2.3 Hysteresis VCC @ 5.0V
R ~
~ 500 kΩ
Open Drain
(Mask Option)



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