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| 型號： | ST6245BQ1 |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | DRAM |
| 英文描述： | The CAT24FC02 is a 2-kb Serial CMOS EEPROM internally organized as 256 words of 8 bits each |
| 中文描述： | 該CAT24FC02是一個(gè)2 KB的EEPROM的國內(nèi)256個(gè)8位每字舉辦的串行CMOS |
| 文件頁數(shù)： | 7/72頁 |
| 文件大?。?/td> | 514K |
| 代理商： | ST6245BQ1 |
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ST62T45B/E45B
1.2 PIN DESCRIPTIONS
V
DD
and V
SS
. Power is supplied to the MCU via
these two pins. V
is the power connection and
V
SS
is the ground connection.
OSCin and OSCout.
These pins are internally
connected to the on-chip oscillator circuit. Aquartz
crystal, a ceramic resonator or an external clock
signal can be connected between these two pins.
The OSCin pin is the input pin, the OSCout pin is
the output pin.
RESET
. The active-low RESET pin is used to re-
start the microcontroller.
TEST/V
.
The TEST must be held at V
for nor-
mal operation (an internal pull-down resistor se-
lects normal operating mode if TEST pin is not
connected). If TEST pin is connected to a +12.5V
level during the reset phase, the EPROM/OTP
programming Mode is entered.
NMI.
The NMI pin provides the capability for asyn-
chronous interruption, by applying an external non
maskable interrupt to the MCU.The NMI input is
falling edge sensitive withSchmitt trigger charac-
teristics. The user can select as option the availa-
bility of an on-chip pull-up at this pin.
PA5-PA7.
These 3 lines are organised as one I/O
port (A). Each line may be configured under soft-
ware control as input with or without internal pull-
up resistors, input with interrupt generation and
pull-up resistor, open-drain or push-pull output, or
as analog input for the A/D converter.
PB0...PB7.
These 8 lines are organised as one
I/O port (B). Each line may be configured under
software control as input with or without internal
pull-up resistors, input with interrupt generation
and pull-up resistor, open-drain
output,
analog input for the A/D converter.
PB0..PB3 can be used as analog inputs for the
A/D converter , while PB7/Sout, PB6/Sin and
PB5/Scl can be used respectively as data out,
data in and Clock pins for the on-chip SPI. In addi-
or push-pull
tion, PB4..PB7 can sink 20mA for direct LED or
TRIAC drive.
PC0-PC7
. These 8 lines are organised as one I/O
port (C). Each line may be configured under soft-
ware control as input with or without internal pull-
up resistor, input with interrupt generation and
pull-up resistor, open-drain or push-pull output, or
as LCD segment output S33..S40.
COM1-COM4
. These four pins are the LCD pe-
ripheral common outputs. They are the outputs of
the on-chip backplane voltage generator which is
used for multiplexing the 45 LCD lines allowing up
to 180 segments to be driven.
S17..S40
. These pins are the 24 LCD peripheral
segment outputs. S33..S40 are alternate functions
of the Port C I/O pins. (Combiports feature)
VLCD
. Display voltage supply. It determines the
high voltage level on COM1-COM4 and S4-S48
pins.
VLCD1/3, VLCD2/3
. Display supply voltage inputs
for determining the display voltage levels on
COM1-COM4 and S4-S48 pins during multiplex
operation.
OSC32in
and
OSC32out
. These pins are inter-
nally connected with the on-chip 32kHz oscillator
circuit. A 32.768kHz quartz crystal can be con-
nected between these two pins if it is necessary to
provide the LCD stand-by clock and real time in-
terrupt. OSC32in is the input pin, OSC32out is the
output pin.
TIMER
. This is the TIMER 1 I/O pin. In input
mode, it is connected to the prescaler and acts as
external timer clock or as control gate for the in-
ternal timer clock. In output mode, the TIMER pin
outputs the data bit when a time-out occurs.The
user can select as option the availability of an on-
chip pull-up at this pin.
6
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|---|---|
| ST6245BQ1/XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
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