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參數(shù)資料
| 型號： | ST6246BB6/XXX |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP56 |
| 封裝： | 0.600 INCH, PLASTIC, SDIP-56 |
| 文件頁數(shù)： | 56/73頁 |
| 文件大?。?/td> | 1806K |
| 代理商： | ST6246BB6/XXX |
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ST62T46B/E46B
1.2 PIN DESCRIPTIONS
VDD and VSS. Power is supplied to the MCU via
these two pins. VDD is the power connection and
VSS is the ground connection.
OSCin and OSCout. These pins are internally
connected to the on-chip oscillator circuit. A quartz
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
PP. The TEST must be held at VSS 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 with Schmitt trigger charac-
teristics. The user can select as option the availa-
bility of an on-chip pull-up at this pin.
PA4-PA7. These 4 lines are organised as one I/O
port (A). Each line may be configured under soft-
ware control as inputs with or without internal pull-
up resistors, input with interrupt generation and
pull-up resistor, open-drain or push-pull outputs, or
as analog inputs for the A/D converter.
PB0...PB7. These 8 lines are organised as one I/O
port (B). Each line may be configured under soft-
ware control as inputs with or without internal pull-
up resistors, input with interrupt generation and
pull-up resistor, open-drain or push-pull outputs,
analog inputs 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 addition, 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.
S9..S16, S25..S43. These pins are the 27 LCD pe-
ripheral segment outputs. S33..S40 are alternate
functions of the Port C I/O pins. (Combiports fea-
ture)
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.
PSS. This is the Power Supply Supervisor sensing
pin. When the voltage applied to this pin is falling
below a software programmed value the highest
priority (NMI) interrupt can be generated. This pin
has to be connected to the voltage to be super-
vised.
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 inter-
rupt. OSC32in is the input pin, OSC32out is the
output pin.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| ST6246B-EMU2 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:REAL TIME EMULATION DEVELOPMENT TOOLS FOR ST6 MCU FAMILY |
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