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ST62T08C Datasheet(PDF) 5 Page - STMicroelectronics

Part No. ST62T08C
Description  8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, OSCILLATOR SAFEGUARD, SAFE RESET AND 20 PINS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST62T08C Datasheet(HTML) 5 Page - STMicroelectronics

 
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ST62T08C/T09C ST62T10C/T20C/E20C
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. Internal pull-up is provid-
ed at this pin.
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
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. The user can select as op-
tion the availability of an on-chip pull-up at this pin.
TIMER. This is the timer I/O pin. In input mode it is
connected to the prescaler and acts as external
timer clock input or as control gate input for the in-
ternal timer clock. In output mode the timer pin out-
puts 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.
PA0-PA3. These 4 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. PA0-
PA3 can also sink 20mA for direct LED driving.
PB0-PB7. These 8 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-
PB3 can be used as analog input to the A/D con-
verter on the ST62T10C, T20C and E20C, while
PB4-PB7 can be used as analog inputs for the A/D
converter on the ST62T09C, T10C, T20C and
E20C.
Figure 2. ST62T08C,T09C, T10C, T20C and
E20C Pin Configuration
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
VDD
TIMER
OSCin
OSCout
NMI
VPP/TEST
RESET
Ain*/PB7
Ain*/PB6
Ain*/PB5
VSS
PA0/20 mA Sink
PA1/20 mA Sink
PA2/20 mA Sink
PA3/20 mA Sink
PB0/Ain*
PB1/Ain*
PB2/Ain*
PB3/Ain*
PB4/Ain*
*Analog input availability depend on device
93


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