MC68HC901P MOTOROLA [Motorola, Inc], MC68HC901P Datasheet - Page 14
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MC68HC901P
Manufacturer Part Number
MC68HC901P
Description
Multi-Function Peripheral
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC901P.pdf
(73 pages)
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SECTION 2
SIGNAL DESCRIPTION
This section contains descriptions of the input and output signals. The input and output
signals can be functionally organized into groups as shown in Figure 2-1. The following
paragraphs provide a brief description of the signal and a reference (if applicable) to other
sections that contain more detail about its function.
2.1 POWER SUPPLY (V
Power is supplied to the MFP using these connections. The V
and ground is connected to the GND pins.
MOTOROLA
ASYNCHRONOUS
BUS CONTROL
Assertion and negation are used to specify forcing a signal to a
particular state. Assertion and assert refer to a signal that is
active or true. Negation and negate refer to a signal that is
inactive or false. These terms are used independently of the
voltage level (high or low) that they represent.
INTERRUPT
CONTROL
SUPPLY
POWER
RS1 – RS5
D0 – D7
Figure 2-1. Input and Output Signals
DTACK
RESET
R / W
IACK
GND
V CC
CLK
IRQ
IEO
CS
DS
IEI
CC
MC68HC901 USER’S MANUAL
REG SEL
DATA BUS
and GND)
FIGURE - INPUT AND OUTPUT SIGNALS
MC68HC901UM / AD
MULTI-FUNCTION
NOTE
PERIPHERAL
MC68HC901
(MFP)
GPIP
CC
pin is powered at +5 volts,
I0 – I7
TAI
TBI
TAO
TBO
TCO
TDO
XTAL1
XTAL2
SI
SO
RC
TC
RR
TR
CONTROL
CONTROL
SERIAL I / O
CONTROL
TIMER
DMA
2-1
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