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TP87C51FC データシート(PDF) 4 Page - Intel Corporation

部品番号 TP87C51FC
部品情報  CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
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メーカー  INTEL [Intel Corporation]
ホームページ  http://www.intel.com
Logo INTEL - Intel Corporation

TP87C51FC データシート(HTML) 4 Page - Intel Corporation

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AUTOMOTIVE 87C51FAFBFCFC-20
Port 0 is also the multiplexed low-order address and
data bus during accesses to external Program and
Data Memory In this application it uses strong inter-
nal pullups when emitting 1’s and can source and
sink several LS TTL inputs
Port 0 also receives the code bytes during EPROM
programming and outputs the code bytes during
program verification External pullup resistors are re-
quired during program verification
Port 1
Port 1 is an 8-bit bidirectional IO port with
internal pullups The Port 1 output buffers can drive
LS TTL inputs Port 1 pins that have 1’s written to
them are pulled high by the internal pullups and in
that state can be used as inputs As inputs Port 1
pins that are externally pulled low will source current
(IIL on the data sheet) because of the internal pull-
ups
In addition Port 1 serves the functions of the follow-
ing special features of the 87C51FBFC
Port Pin
Alternate Function
P10
T2 (External Count Input to
TimerCounter 2)
P11
T2EX (TimerCounter 2 Capture
Reload Trigger and Direction Control)
P12
ECI (External Count Input to the PCA)
P13
CEX0 (External IO for Compare
Capture Module 0)
P14
CEX1 (External IO for Compare
Capture Module 1)
P15
CEX2 (External IO for Compare
Capture Module 2)
P16
CEX3 (External IO for Compare
Capture Module 3)
P17
CEX4 (External IO for Compare
Capture Module 4)
Port 1 receives the low-order address bytes during
EPROM programming and verifying
Port 2
Port 2 is an 8-bit bidirectional IO port with
internal pullups The Port 2 output buffers can drive
LS TTL inputs Port 2 pins that have 1’s written to
them are pulled high by the internal pullups and in
that state can be used as inputs As inputs Port 2
pins that are externally pulled low will source current
(IIL on the data sheet) because of the internal pull-
ups
PACKAGES
Part
Prefix
Package Type
87C51FAFBFC
P
40-Pin Plastic DIP
N
44-Pin PLCC
DIP
270961 – 3
PAD (PLCC)
270961 – 4
EPROM only
Do not connect reserved pins
Diagrams are for pin reference only Package sizes are
not to scale
Figure 3 Pin Connections (Top View)
4


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