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ST62T55B Datasheet(PDF) 6 Page - STMicroelectronics

No. de Pieza. ST62T55B
Descripción  8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, AUTO-RELOAD TIMER, EEPROM AND SPI
Descarga  74 Pages
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Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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ST62T55B Datasheet(HTML) 6 Page - STMicroelectronics

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ST62T55B ST62T65B/E65B
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. 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.It is provided with an on-chip
pullup resistor and Schmitt trigger characteristics.
PA0-PA7. These 8 lines are organized as one I/O
port (A). Each line may be configured under soft-
ware control as inputs with or without internal pull-
up resistors, interrupt generating inputs with pull-
up resistors, open-drain or push-pull outputs, ana-
log inputs for the A/D converter.
PB0-PB5. These 6 lines are organized as one I/O
port (B). Each line may be configured under soft-
ware control as inputs with or without internal pull-
up resistors, interrupt generating inputs with pull-
up resistors, open-drain or push-pull outputs.
PB0-PB5 can also sink 20mA for direct LED
driving.
PB6/ARTIMin, PB7/ARTIMout. These pins are ei-
ther Port B I/O bits or the Input and Output pins of
the AR TIMER. To be used as timer input function
PB6 has to be programmed as input with or with-
out pull-up. A dedicated bit in the AR TIMER Mode
Control Register sets PB7 as timer output function.
PB6-PB7 can also sink 20mA for direct LED driv-
ing.
PC0-PC4. These 5 lines are organized as one I/O
port (C). Each line may be configured under soft-
ware control as input with or without internal pull-
up resistor, interrupt generating input with pull-up
resistor, analog input for the A/D converter, open-
drain or push-pull output.
PC1 can also be used as Timer I/O bit while
PC2-PC4 can also be used as respectively Data
in, Data out and Clock I/O pins for the on-chip SPI
to carry the synchronous serial I/O signals.
Figure 2. ST62T55B, T65B, E65B Pin
Configuration
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
PB0
PB1
VPP/TEST
PB2
PB3
Ain / PA0
VDD
PB4
PB5
ARTIMin/PB6
PC0/Ain
PC1/TIM1/Ain
PC2/Sin/Ain
PC3/Sout/Ain
PC4/Sck/Ain
PA7/Ain
PA6/Ain
PA5/Ain
PA4/Ain
PA3/Ain
28
27
26
25
24
23
22
21
ARTIMout/PB7
VSS
Ain/PA1
Ain/PA2
NMI
RESET
OSCout
OSCin
6


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